{"id":5393,"date":"2026-04-03T08:02:00","date_gmt":"2026-04-03T00:02:00","guid":{"rendered":"https:\/\/www.topfastpcb.com\/?p=5393"},"modified":"2026-03-25T10:34:06","modified_gmt":"2026-03-25T02:34:06","slug":"heavy-copper-pcb","status":"publish","type":"post","link":"https:\/\/www.topfastpcb.com\/fi\/blog\/heavy-copper-pcb\/","title":{"rendered":"Raskas kupari PCB: Suunnittelu-, valmistus- ja sovellusopas"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_74 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Sis\u00e4llysluettelo<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/heavy-copper-pcb\/#What_Is_a_Heavy_Copper_PCB\" >Mik\u00e4 on raskas kupari PCB?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/heavy-copper-pcb\/#Why_Use_Heavy_Copper_Instead_of_Standard_PCB\" >Miksi k\u00e4ytt\u00e4\u00e4 raskasta kuparia tavallisen PCB:n sijaan?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/heavy-copper-pcb\/#Key_Advantages\" >T\u00e4rkeimm\u00e4t edut<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/heavy-copper-pcb\/#Typical_Applications_of_Heavy_Copper_PCBs\" >Raskaan kuparin PCB:n tyypilliset sovellukset<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/heavy-copper-pcb\/#Copper_Thickness_Standards\" >Kuparin paksuusstandardit<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/heavy-copper-pcb\/#How_Heavy_Copper_PCBs_Are_Manufactured\" >Kuinka raskas kupari PCB:t\u00e4 valmistetaan<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/heavy-copper-pcb\/#Core_Process_Differences\" >Ydinprosessin erot<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/heavy-copper-pcb\/#Design_Guidelines_for_Heavy_Copper_PCBs\" >Raskaan kuparin PCB:n suunnitteluohjeet<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/heavy-copper-pcb\/#Key_Design_Considerations\" >T\u00e4rkeimm\u00e4t suunnitteluun liittyv\u00e4t n\u00e4k\u00f6kohdat<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/heavy-copper-pcb\/#How_to_Design_a_Heavy_Copper_PCB_Step-by-Step\" >Kuinka suunnitella raskas kupari PCB (askel askeleelta)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/heavy-copper-pcb\/#Common_Challenges_and_How_to_Solve_Them\" >Yleiset haasteet (ja niiden ratkaiseminen)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/heavy-copper-pcb\/#FAQ_Frequently_Asked_Questions\" >FAQ (Usein kysytyt kysymykset)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/heavy-copper-pcb\/#Conclusion\" >P\u00e4\u00e4telm\u00e4<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Is_a_Heavy_Copper_PCB\"><\/span>Mik\u00e4 on raskas kupari PCB?<span class=\"ez-toc-section-end\"><\/span><\/h2><p>Raskas kupari PCB viittaa painettuun piirilevyyn, joka k\u00e4ytt\u00e4\u00e4 kuparin paksuus on <strong>v\u00e4hint\u00e4\u00e4n 3 oz\/ft\u00b2 (105\u00b5m) tai enemm\u00e4n.<\/strong>verrattuna tavallisiin PCB-levyihin, jotka tyypillisesti k\u00e4ytt\u00e4v\u00e4t 1 oz tai v\u00e4hemm\u00e4n.<\/p><p>N\u00e4m\u00e4 levyt on suunniteltu erityisesti sovelluksiin, jotka vaativat:<\/p><ul class=\"wp-block-list\"><li>Suuri virransietokyky<\/li>\n\n<li>L\u00e4mm\u00f6nhallinta<\/li>\n\n<li>Mekaaninen kest\u00e4vyys<\/li><\/ul><p>Jos olet uusi PCB-perusteet, voit halutessasi tarkistaa meid\u00e4n <a href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/pcb-panelization-design-guidelines\/\"><strong>PCB-suunnitteluohjeet<\/strong><\/a> ymm\u00e4rt\u00e4\u00e4 paremmin, miten kuparin paksuus vaikuttaa s\u00e4hk\u00f6iseen suorituskykyyn.<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"447\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/03\/Heavy-Copper-PCB.jpg\" alt=\"Raskas kupari PCB\" class=\"wp-image-5394\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/03\/Heavy-Copper-PCB.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/03\/Heavy-Copper-PCB-300x224.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/03\/Heavy-Copper-PCB-16x12.jpg 16w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_Use_Heavy_Copper_Instead_of_Standard_PCB\"><\/span>Miksi k\u00e4ytt\u00e4\u00e4 raskasta kuparia tavallisen PCB:n sijaan?<span class=\"ez-toc-section-end\"><\/span><\/h2><p>Monissa todellisissa sovelluksissa tavallinen kupari ei yksinkertaisesti riit\u00e4. Kun virta kasvaa, my\u00f6s l\u00e4mp\u00f6 kasvaa - ja juuri t\u00e4ss\u00e4 kohtaa raskas kupari loistaa.<\/p><p>Laajempi yleiskatsaus tuotantokapasiteettiin on osoitteessa <strong><a href=\"https:\/\/www.topfastpcb.com\/fi\/pcb-manufacturing\/\">PCB-valmistusvalmiudet<\/a><\/strong> <\/p><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Key_Advantages\"><\/span>T\u00e4rkeimm\u00e4t edut<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>1. Suurempi nykyinen kapasiteetti<\/strong><br>Paksumman kuparin ansiosta j\u00e4ljet pystyv\u00e4t kuljettamaan huomattavasti enemm\u00e4n virtaa ilman ylikuumenemista.<\/p><p><strong>2. Parempi l\u00e4mm\u00f6ntuotto<\/strong><br>Raskas kupari levitt\u00e4\u00e4 l\u00e4mp\u00f6\u00e4 tehokkaammin koko levyyn. Jos haluat syv\u00e4llisemp\u00e4\u00e4 tietoa, tarkista <strong><a href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/a-comprehensive-guide-to-bga-package-layout\/\">PCB-l\u00e4mm\u00f6nhallinta<\/a><\/strong><\/p><p><strong>3. Parannettu mekaaninen lujuus<\/strong><br>Paksummat kuparikerrokset parantavat t\u00e4rin\u00e4n- ja l\u00e4mm\u00f6nkest\u00e4vyytt\u00e4.<\/p><p><strong>4. Parannettu luotettavuus<\/strong><br>Pienempi riski j\u00e4ljen palamiseen tai delaminaatioon \u00e4\u00e4rimm\u00e4isiss\u00e4 olosuhteissa.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Typical_Applications_of_Heavy_Copper_PCBs\"><\/span>Raskaan kuparin PCB:n tyypilliset sovellukset<span class=\"ez-toc-section-end\"><\/span><\/h2><p>Raskaat kuparipiirilevyt eiv\u00e4t ole kapea-alaisia - ne ovat v\u00e4ltt\u00e4m\u00e4tt\u00f6mi\u00e4 useilla teollisuudenaloilla:<\/p><ul class=\"wp-block-list\"><li><strong>Virtal\u00e4hteet ja muuntimet<\/strong><\/li>\n\n<li><strong>S\u00e4hk\u00f6ajoneuvot (EV-j\u00e4rjestelm\u00e4t)<\/strong><\/li>\n\n<li><strong>Aurinkovaihtosuuntaajat<\/strong><\/li>\n\n<li><strong>Teollisuusautomaatiolaitteet<\/strong><\/li>\n\n<li><strong>Tehokas LED-valaistus<\/strong><\/li>\n\n<li><strong>Akunhallintaj\u00e4rjestelm\u00e4t (BMS)<\/strong><\/li><\/ul><p>Jos suunnittelussasi k\u00e4ytet\u00e4\u00e4n suurta virtaa tai l\u00e4mp\u00f6\u00e4, raskas kupari ei yleens\u00e4 ole valinnaista, vaan sit\u00e4 tarvitaan.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Copper_Thickness_Standards\"><\/span>Kuparin paksuusstandardit<span class=\"ez-toc-section-end\"><\/span><\/h2><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Kupari Paino<\/th><th>Paksuus (noin)<\/th><th>LuokitusN\/OFF)<\/th><\/tr><\/thead><tbody><tr><td>1 oz<\/td><td>35 \u00b5m<\/td><td>Standardi PCB<\/td><\/tr><tr><td>2 oz<\/td><td>70 \u00b5m<\/td><td>Paksu kupari<\/td><\/tr><tr><td>3 oz<\/td><td>105 \u00b5m<\/td><td>Raskas kupari<\/td><\/tr><tr><td>4 oz+<\/td><td>140 \u00b5m+<\/td><td>Extreme Copper<\/td><\/tr><\/tbody><\/table><\/figure><p>Materiaaleja valittaessa on my\u00f6s t\u00e4rke\u00e4\u00e4 ottaa huomioon l\u00e4mm\u00f6nkest\u00e4vyys. Lis\u00e4tietoja osoitteessa <strong><a href=\"https:\/\/www.topfastpcb.com\/fi\/products\/high-tg-rigid-pcb\/\">Korkea TG PCB-materiaalit<\/a><\/strong><\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_Heavy_Copper_PCBs_Are_Manufactured\"><\/span>Kuinka raskas kupari PCB:t\u00e4 valmistetaan<span class=\"ez-toc-section-end\"><\/span><\/h2><p>Raskaiden kuparipiirilevyjen valmistus on monimutkaisempaa kuin tavallisten piirilevyjen. Keskeinen ero on <strong>pinnoituksen ja sy\u00f6vytyksen valvonta<\/strong>.<\/p><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Core_Process_Differences\"><\/span>Ydinprosessin erot<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>1. Erityinen sy\u00f6vytysprosessi<\/strong><br>Paksu kupari on vaikeampi sy\u00f6vytt\u00e4\u00e4 puhtaaksi. Valmistajat k\u00e4ytt\u00e4v\u00e4t vaiheittaista etsausta tai differentiaalista etsausta j\u00e4lkitarkkuuden s\u00e4ilytt\u00e4miseksi.<\/p><p><strong>2. Korkean spektrisuhteen pinnoitus<\/strong><br>Pinnoituksessa on varmistettava kuparin tasainen jakautuminen heikkojen kohtien v\u00e4ltt\u00e4miseksi.<\/p><p><strong>3. L\u00e4mp\u00f6j\u00e4nnityksen hallinta<\/strong><br>Prosessin lis\u00e4valvontaa tarvitaan v\u00e4\u00e4ntymisen ja delaminaation est\u00e4miseksi.<\/p><p><strong>4. Kehittynyt laminointi<\/strong><br>Paksummat kuparikerrokset vaativat suurempaa painetta ja tarkempia laminointisyklej\u00e4.<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"432\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/03\/Heavy-Copper-PCB-1.jpg\" alt=\"Raskas kupari PCB\" class=\"wp-image-5395\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/03\/Heavy-Copper-PCB-1.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/03\/Heavy-Copper-PCB-1-300x216.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/03\/Heavy-Copper-PCB-1-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Design_Guidelines_for_Heavy_Copper_PCBs\"><\/span>Raskaan kuparin PCB:n suunnitteluohjeet<span class=\"ez-toc-section-end\"><\/span><\/h2><p>Raskaiden kuparilevyjen suunnittelussa ei ole kyse vain \"kuparin painon lis\u00e4\u00e4misest\u00e4\". On olemassa kompromisseja.<\/p><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Key_Design_Considerations\"><\/span>T\u00e4rkeimm\u00e4t suunnitteluun liittyv\u00e4t n\u00e4k\u00f6kohdat<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>J\u00e4ljen leveys vs. virta<\/strong><br>Jopa raskaalla kuparilla j\u00e4ljen leveydell\u00e4 on edelleen merkityst\u00e4. \u00c4l\u00e4 luota vain paksuuteen.<\/p><p><strong>V\u00e4limatka S\u00e4\u00e4nn\u00f6tN\/OFF)<\/strong><br>Paksumpi kupari edellytt\u00e4\u00e4 suurempia v\u00e4lej\u00e4 oikosulkujen v\u00e4ltt\u00e4miseksi sy\u00f6vytyksen aikana.<\/p><p><strong>Thermal Relief suunnittelu<\/strong><br>Raskaisiin kuparitasoihin liitettyj\u00e4 tyynyj\u00e4 voi olla vaikea juottaa - l\u00e4mp\u00f6erotuskuviot ovat kriittisi\u00e4.<\/p><p><strong>Via DesignN\/OFF)<\/strong><br>K\u00e4yt\u00e4 suurempia l\u00e4pivientej\u00e4 tai useita l\u00e4pivientej\u00e4 virranjakeluun.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Design_a_Heavy_Copper_PCB_Step-by-Step\"><\/span>Kuinka suunnitella raskas kupari PCB (askel askeleelta)<span class=\"ez-toc-section-end\"><\/span><\/h2><div class=\"schema-how-to wp-block-yoast-how-to-block\"><p class=\"schema-how-to-description\"><\/p> <ol class=\"schema-how-to-steps\"><li class=\"schema-how-to-step\" id=\"how-to-step-1774404856675\"><strong class=\"schema-how-to-step-name\">Vaihe 1: M\u00e4\u00e4rittele nykyiset vaatimukset<\/strong> <p class=\"schema-how-to-step-text\">Laske maksimivirta kullekin johtimelle ja tehopolulle.<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-1774404866333\"><strong class=\"schema-how-to-step-name\">Vaihe 2: Valitse kuparin paksuus<\/strong> <p class=\"schema-how-to-step-text\">Valitse 3 oz:n, 4 oz:n tai korkeamman v\u00e4lill\u00e4 nykyisten ja termisten tarpeiden mukaan.<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-1774404874210\"><strong class=\"schema-how-to-step-name\">Vaihe 3: Optimoi j\u00e4lkigeometriaa<\/strong> <p class=\"schema-how-to-step-text\">Tasapainota j\u00e4ljen leveys ja kuparin paksuus valmistettavuutta varten.<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-1774404884142\"><strong class=\"schema-how-to-step-name\">Vaihe 4: Suunnittele l\u00e4mm\u00f6nhallinta<\/strong> <p class=\"schema-how-to-step-text\">Lis\u00e4\u00e4 tarvittaessa kuparivaluja, j\u00e4\u00e4hdytyslevyj\u00e4 tai l\u00e4mp\u00f6l\u00e4pivientej\u00e4.<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-1774404893405\"><strong class=\"schema-how-to-step-name\">Vaihe 5: Validoi valmistajan kanssa<\/strong> <p class=\"schema-how-to-step-text\">Tee tiivist\u00e4 yhteisty\u00f6t\u00e4 PCB-toimittajan kanssa suunnittelus\u00e4\u00e4nt\u00f6jen ja toleranssien vahvistamiseksi.<\/p> <\/li><\/ol><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Common_Challenges_and_How_to_Solve_Them\"><\/span>Yleiset haasteet (ja niiden ratkaiseminen)<span class=\"ez-toc-section-end\"><\/span><\/h2><p><strong>Ongelma: vaikea sy\u00f6vytystarkkuus<\/strong><br>Ratkaisu: Suurenna minimij\u00e4ljen leveytt\u00e4 ja v\u00e4li\u00e4.<\/p><p><strong>Ongelma: Juotosongelmat<\/strong><br>Ratkaisu: K\u00e4yt\u00e4 l\u00e4mp\u00f6erotustyynyj\u00e4.<\/p><p><strong>Ongelma: Levyn v\u00e4\u00e4ntyminen<\/strong><br>Ratkaisu: Varmista kuparin tasapainoinen jakelu.<\/p><p><strong>Ongelma: korkeammat kustannukset<\/strong><br>Ratkaisu: K\u00e4yt\u00e4 raskasta kuparia vain tarvittaessa (valikoiva kuparisuunnittelu).<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"454\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/03\/Heavy-Copper-PCB-2.jpg\" alt=\"Raskas kupari PCB\" class=\"wp-image-5396\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/03\/Heavy-Copper-PCB-2.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/03\/Heavy-Copper-PCB-2-300x227.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/03\/Heavy-Copper-PCB-2-16x12.jpg 16w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"FAQ_Frequently_Asked_Questions\"><\/span>FAQ (Usein kysytyt kysymykset)<span class=\"ez-toc-section-end\"><\/span><\/h2><div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1774405511520\"><strong class=\"schema-faq-question\">1. Mit\u00e4 pidet\u00e4\u00e4n raskaana kuparina PCB:ss\u00e4?<\/strong> <p class=\"schema-faq-answer\">Tyypillisesti kaikki kuparin paksuus <strong>yli 3 oz (105\u00b5m)<\/strong> luokitellaan raskaaksi kupariksi.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1774405525481\"><strong class=\"schema-faq-question\">2. Kuinka paljon virtaa raskas kuparinen piirilevy voi kantaa?<\/strong> <p class=\"schema-faq-answer\">Se riippuu j\u00e4ljen leveydest\u00e4 ja l\u00e4mp\u00f6tilan noususta, mutta raskas kupari voi k\u00e4sitell\u00e4 <strong>huomattavasti suurempi virta<\/strong> kuin tavalliset PCB:t.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1774405538314\"><strong class=\"schema-faq-question\">3. Ovatko raskaat kuparipiirilevyt kalliimpia?<\/strong> <p class=\"schema-faq-answer\">Kyll\u00e4, p\u00e4\u00e4asiassa seuraavista syist\u00e4:<br\/>Monimutkaisempi valmistus<br\/>Alhaisemmat tuottoprosentit<br\/>Lis\u00e4materiaalit<br\/>Ne parantavat kuitenkin pitk\u00e4n aikav\u00e4lin luotettavuutta ja v\u00e4hent\u00e4v\u00e4t vikariski\u00e4.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1774405554380\"><strong class=\"schema-faq-question\">4. Voiko raskas kuparipiirilevy olla monikerroksinen?<\/strong> <p class=\"schema-faq-answer\">Kyll\u00e4. Niit\u00e4 voidaan k\u00e4ytt\u00e4\u00e4:<br\/>Ulommat kerrokset<br\/>Sis\u00e4iset kerrokset<br\/>Hybridi-pinoamiset<br\/>Se edellytt\u00e4\u00e4 kuitenkin kehittynytt\u00e4 valmistuksen valvontaa.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1774405568584\"><strong class=\"schema-faq-question\">5. Mitk\u00e4 teollisuudenalat k\u00e4ytt\u00e4v\u00e4t eniten raskaita kuparipiirilevyj\u00e4?<\/strong> <p class=\"schema-faq-answer\">Raskaita kuparipiirilevyj\u00e4 k\u00e4ytet\u00e4\u00e4n laajalti:<br\/>Autoteollisuus (erityisesti s\u00e4hk\u00f6k\u00e4ytt\u00f6iset j\u00e4rjestelm\u00e4t)<br\/>Uusiutuva energia<br\/>Teollisuuden ohjaus<br\/>Tehoelektroniikka<\/p> <\/div> <\/div><ul class=\"wp-block-list\"><\/ul><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>P\u00e4\u00e4telm\u00e4<span class=\"ez-toc-section-end\"><\/span><\/h2><p>Jos projektisi sis\u00e4lt\u00e4\u00e4 suuren virran, l\u00e4mp\u00f6kuormituksen tai ankarat olosuhteet, raskas kuparipiirilevy ei ole vain p\u00e4ivitys - se on v\u00e4ltt\u00e4m\u00e4tt\u00f6myys.<\/p><p><strong><a href=\"https:\/\/www.topfastpcb.com\/fi\/contact\/\">Tarvitaan DFM-arviointi tai tarjous<\/a><\/strong>?<br>Suunnittelutiimimme voi auttaa sinua optimoimaan kustannukset, rakenteen ja luotettavuuden ennen tuotantoa.<\/p><p><\/p>","protected":false},"excerpt":{"rendered":"<p>Raskaat kuparipiirilevyt on suunniteltu sovelluksiin, jotka vaativat suurta virrankapasiteettia, tehokasta l\u00e4mm\u00f6npoistoa ja pitk\u00e4aikaista luotettavuutta. Tavallisiin piirilevyihin verrattuna ne k\u00e4ytt\u00e4v\u00e4t v\u00e4hint\u00e4\u00e4n 3 oz:n kuparipaksuutta, joten ne sopivat erinomaisesti tehoelektroniikkaan, s\u00e4hk\u00f6ajoneuvoihin ja teollisuusj\u00e4rjestelmiin.<\/p>","protected":false},"author":1,"featured_media":5397,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[108],"tags":[450],"class_list":["post-5393","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-heavy-copper-pcb"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Heavy Copper PCBs: Design, Manufacturing &amp; Applications Guide<\/title>\n<meta name=\"description\" content=\"Learn everything about heavy copper PCBs, including structure, advantages, manufacturing process, and design guidelines. Ideal for power electronics, automotive, and industrial applications.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/heavy-copper-pcb\/\" \/>\n<meta property=\"og:locale\" content=\"fi_FI\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Heavy Copper PCBs: Design, Manufacturing &amp; Applications Guide\" \/>\n<meta property=\"og:description\" content=\"Learn everything about heavy copper PCBs, including structure, advantages, manufacturing process, and design guidelines. Ideal for power electronics, automotive, and industrial applications.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.topfastpcb.com\/fi\/blog\/heavy-copper-pcb\/\" \/>\n<meta property=\"og:site_name\" content=\"Topfastpcb\" \/>\n<meta property=\"article:published_time\" content=\"2026-04-03T00:02:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/03\/Heavy-Copper-PCB-3.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"460\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"\u6258\u666e\u6cd5\u65af\u7279\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Kirjoittanut\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u6258\u666e\u6cd5\u65af\u7279\" \/>\n\t<meta name=\"twitter:label2\" content=\"Arvioitu lukuaika\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minuuttia\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/\"},\"author\":{\"name\":\"\u6258\u666e\u6cd5\u65af\u7279\",\"@id\":\"https:\/\/www.topfastpcb.com\/#\/schema\/person\/39870874f1c329f3cd3693593dbdce3a\"},\"headline\":\"Heavy Copper PCBs: Design, Manufacturing &#038; Applications Guide\",\"datePublished\":\"2026-04-03T00:02:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/\"},\"wordCount\":741,\"publisher\":{\"@id\":\"https:\/\/www.topfastpcb.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/03\/Heavy-Copper-PCB-3.jpg\",\"keywords\":[\"Heavy Copper PCB\"],\"articleSection\":[\"News\"],\"inLanguage\":\"fi\"},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/\",\"url\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/\",\"name\":\"Heavy Copper PCBs: Design, Manufacturing & Applications Guide\",\"isPartOf\":{\"@id\":\"https:\/\/www.topfastpcb.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/03\/Heavy-Copper-PCB-3.jpg\",\"datePublished\":\"2026-04-03T00:02:00+00:00\",\"description\":\"Learn everything about heavy copper PCBs, including structure, advantages, manufacturing process, and design guidelines. Ideal for power electronics, automotive, and industrial applications.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#breadcrumb\"},\"mainEntity\":[{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405511520\"},{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405525481\"},{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405538314\"},{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405554380\"},{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405568584\"}],\"inLanguage\":\"fi\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fi\",\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#primaryimage\",\"url\":\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/03\/Heavy-Copper-PCB-3.jpg\",\"contentUrl\":\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/03\/Heavy-Copper-PCB-3.jpg\",\"width\":600,\"height\":460,\"caption\":\"Heavy Copper PCB\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.topfastpcb.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Heavy Copper PCBs: Design, Manufacturing &#038; Applications Guide\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.topfastpcb.com\/#website\",\"url\":\"https:\/\/www.topfastpcb.com\/\",\"name\":\"Topfastpcb\",\"description\":\"Topfast Prime Choice for Global Electronics Manufacturing\",\"publisher\":{\"@id\":\"https:\/\/www.topfastpcb.com\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.topfastpcb.com\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fi\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.topfastpcb.com\/#organization\",\"name\":\"Topfastpcb\",\"url\":\"https:\/\/www.topfastpcb.com\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fi\",\"@id\":\"https:\/\/www.topfastpcb.com\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/02\/cropped-topfast-logo.png\",\"contentUrl\":\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/02\/cropped-topfast-logo.png\",\"width\":144,\"height\":56,\"caption\":\"Topfastpcb\"},\"image\":{\"@id\":\"https:\/\/www.topfastpcb.com\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.topfastpcb.com\/#\/schema\/person\/39870874f1c329f3cd3693593dbdce3a\",\"name\":\"\u6258\u666e\u6cd5\u65af\u7279\",\"sameAs\":[\"http:\/\/www.topfastpcb.com\"],\"url\":\"https:\/\/www.topfastpcb.com\/fi\/blog\/author\/admin\/\"},{\"@type\":\"Question\",\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405511520\",\"position\":1,\"url\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405511520\",\"name\":\"1. What is considered heavy copper in PCB?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Typically, any copper thickness <strong>above 3 oz (105\u00b5m)<\/strong> is classified as heavy copper.\",\"inLanguage\":\"fi\"},\"inLanguage\":\"fi\"},{\"@type\":\"Question\",\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405525481\",\"position\":2,\"url\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405525481\",\"name\":\"2. How much current can a heavy copper PCB carry?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It depends on trace width and temperature rise, but heavy copper can handle <strong>significantly higher current<\/strong> than standard PCBs.\",\"inLanguage\":\"fi\"},\"inLanguage\":\"fi\"},{\"@type\":\"Question\",\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405538314\",\"position\":3,\"url\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405538314\",\"name\":\"3. Are heavy copper PCBs more expensive?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, mainly due to:<br\/>More complex manufacturing<br\/>Lower yield rates<br\/>Additional materials<br\/>However, they improve long-term reliability and reduce failure risk.\",\"inLanguage\":\"fi\"},\"inLanguage\":\"fi\"},{\"@type\":\"Question\",\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405554380\",\"position\":4,\"url\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405554380\",\"name\":\"4. Can heavy copper PCBs be multilayer?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. They can be used in:<br\/>Outer layers<br\/>Inner layers<br\/>Hybrid stack-ups<br\/>But it requires advanced manufacturing control.\",\"inLanguage\":\"fi\"},\"inLanguage\":\"fi\"},{\"@type\":\"Question\",\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405568584\",\"position\":5,\"url\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405568584\",\"name\":\"5. What industries use heavy copper PCBs the most?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Heavy copper PCBs are widely used in:<br\/>Automotive (especially EV systems)<br\/>Renewable energy<br\/>Industrial control<br\/>Power electronics\",\"inLanguage\":\"fi\"},\"inLanguage\":\"fi\"},{\"@type\":\"HowTo\",\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#howto-1\",\"name\":\"Heavy Copper PCBs: Design, Manufacturing &#038; Applications Guide\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#article\"},\"description\":\"\",\"step\":[{\"@type\":\"HowToStep\",\"url\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#how-to-step-1774404856675\",\"name\":\"Step 1: Define Current Requirements\",\"itemListElement\":[{\"@type\":\"HowToDirection\",\"text\":\"Calculate the maximum current for each trace and power path.\"}]},{\"@type\":\"HowToStep\",\"url\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#how-to-step-1774404866333\",\"name\":\"Step 2: Select Copper Thickness\",\"itemListElement\":[{\"@type\":\"HowToDirection\",\"text\":\"Choose between 3 oz, 4 oz, or higher based on current and thermal needs.\"}]},{\"@type\":\"HowToStep\",\"url\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#how-to-step-1774404874210\",\"name\":\"Step 3: Optimize Trace Geometry\",\"itemListElement\":[{\"@type\":\"HowToDirection\",\"text\":\"Balance trace width and copper thickness for manufacturability.\"}]},{\"@type\":\"HowToStep\",\"url\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#how-to-step-1774404884142\",\"name\":\"Step 4: Plan Thermal Management\",\"itemListElement\":[{\"@type\":\"HowToDirection\",\"text\":\"Add copper pours, heat sinks, or thermal vias where needed.\"}]},{\"@type\":\"HowToStep\",\"url\":\"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#how-to-step-1774404893405\",\"name\":\"Step 5: Validate with Manufacturer\",\"itemListElement\":[{\"@type\":\"HowToDirection\",\"text\":\"Work closely with your PCB supplier to confirm design rules and tolerances.\"}]}],\"inLanguage\":\"fi\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Heavy Copper PCBs: Design, Manufacturing & Applications Guide","description":"Learn everything about heavy copper PCBs, including structure, advantages, manufacturing process, and design guidelines. Ideal for power electronics, automotive, and industrial applications.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.topfastpcb.com\/fi\/blog\/heavy-copper-pcb\/","og_locale":"fi_FI","og_type":"article","og_title":"Heavy Copper PCBs: Design, Manufacturing & Applications Guide","og_description":"Learn everything about heavy copper PCBs, including structure, advantages, manufacturing process, and design guidelines. Ideal for power electronics, automotive, and industrial applications.","og_url":"https:\/\/www.topfastpcb.com\/fi\/blog\/heavy-copper-pcb\/","og_site_name":"Topfastpcb","article_published_time":"2026-04-03T00:02:00+00:00","og_image":[{"width":600,"height":460,"url":"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/03\/Heavy-Copper-PCB-3.jpg","type":"image\/jpeg"}],"author":"\u6258\u666e\u6cd5\u65af\u7279","twitter_card":"summary_large_image","twitter_misc":{"Kirjoittanut":"\u6258\u666e\u6cd5\u65af\u7279","Arvioitu lukuaika":"5 minuuttia"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#article","isPartOf":{"@id":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/"},"author":{"name":"\u6258\u666e\u6cd5\u65af\u7279","@id":"https:\/\/www.topfastpcb.com\/#\/schema\/person\/39870874f1c329f3cd3693593dbdce3a"},"headline":"Heavy Copper PCBs: Design, Manufacturing &#038; Applications Guide","datePublished":"2026-04-03T00:02:00+00:00","mainEntityOfPage":{"@id":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/"},"wordCount":741,"publisher":{"@id":"https:\/\/www.topfastpcb.com\/#organization"},"image":{"@id":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#primaryimage"},"thumbnailUrl":"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/03\/Heavy-Copper-PCB-3.jpg","keywords":["Heavy Copper PCB"],"articleSection":["News"],"inLanguage":"fi"},{"@type":["WebPage","FAQPage"],"@id":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/","url":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/","name":"Heavy Copper PCBs: Design, Manufacturing & Applications Guide","isPartOf":{"@id":"https:\/\/www.topfastpcb.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#primaryimage"},"image":{"@id":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#primaryimage"},"thumbnailUrl":"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/03\/Heavy-Copper-PCB-3.jpg","datePublished":"2026-04-03T00:02:00+00:00","description":"Learn everything about heavy copper PCBs, including structure, advantages, manufacturing process, and design guidelines. Ideal for power electronics, automotive, and industrial applications.","breadcrumb":{"@id":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#breadcrumb"},"mainEntity":[{"@id":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405511520"},{"@id":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405525481"},{"@id":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405538314"},{"@id":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405554380"},{"@id":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405568584"}],"inLanguage":"fi","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/"]}]},{"@type":"ImageObject","inLanguage":"fi","@id":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#primaryimage","url":"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/03\/Heavy-Copper-PCB-3.jpg","contentUrl":"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/03\/Heavy-Copper-PCB-3.jpg","width":600,"height":460,"caption":"Heavy Copper PCB"},{"@type":"BreadcrumbList","@id":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.topfastpcb.com\/"},{"@type":"ListItem","position":2,"name":"Heavy Copper PCBs: Design, Manufacturing &#038; Applications Guide"}]},{"@type":"WebSite","@id":"https:\/\/www.topfastpcb.com\/#website","url":"https:\/\/www.topfastpcb.com\/","name":"Topfastpcb","description":"Topfast Prime Choice for Global Electronics Manufacturing","publisher":{"@id":"https:\/\/www.topfastpcb.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.topfastpcb.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fi"},{"@type":"Organization","@id":"https:\/\/www.topfastpcb.com\/#organization","name":"Topfastpcb","url":"https:\/\/www.topfastpcb.com\/","logo":{"@type":"ImageObject","inLanguage":"fi","@id":"https:\/\/www.topfastpcb.com\/#\/schema\/logo\/image\/","url":"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/02\/cropped-topfast-logo.png","contentUrl":"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/02\/cropped-topfast-logo.png","width":144,"height":56,"caption":"Topfastpcb"},"image":{"@id":"https:\/\/www.topfastpcb.com\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/www.topfastpcb.com\/#\/schema\/person\/39870874f1c329f3cd3693593dbdce3a","name":"\u6258\u666e\u6cd5\u65af\u7279","sameAs":["http:\/\/www.topfastpcb.com"],"url":"https:\/\/www.topfastpcb.com\/fi\/blog\/author\/admin\/"},{"@type":"Question","@id":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405511520","position":1,"url":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405511520","name":"1. What is considered heavy copper in PCB?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Typically, any copper thickness <strong>above 3 oz (105\u00b5m)<\/strong> is classified as heavy copper.","inLanguage":"fi"},"inLanguage":"fi"},{"@type":"Question","@id":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405525481","position":2,"url":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405525481","name":"2. How much current can a heavy copper PCB carry?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"It depends on trace width and temperature rise, but heavy copper can handle <strong>significantly higher current<\/strong> than standard PCBs.","inLanguage":"fi"},"inLanguage":"fi"},{"@type":"Question","@id":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405538314","position":3,"url":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405538314","name":"3. Are heavy copper PCBs more expensive?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, mainly due to:<br\/>More complex manufacturing<br\/>Lower yield rates<br\/>Additional materials<br\/>However, they improve long-term reliability and reduce failure risk.","inLanguage":"fi"},"inLanguage":"fi"},{"@type":"Question","@id":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405554380","position":4,"url":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405554380","name":"4. Can heavy copper PCBs be multilayer?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes. They can be used in:<br\/>Outer layers<br\/>Inner layers<br\/>Hybrid stack-ups<br\/>But it requires advanced manufacturing control.","inLanguage":"fi"},"inLanguage":"fi"},{"@type":"Question","@id":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405568584","position":5,"url":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#faq-question-1774405568584","name":"5. What industries use heavy copper PCBs the most?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Heavy copper PCBs are widely used in:<br\/>Automotive (especially EV systems)<br\/>Renewable energy<br\/>Industrial control<br\/>Power electronics","inLanguage":"fi"},"inLanguage":"fi"},{"@type":"HowTo","@id":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#howto-1","name":"Heavy Copper PCBs: Design, Manufacturing &#038; Applications Guide","mainEntityOfPage":{"@id":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#article"},"description":"","step":[{"@type":"HowToStep","url":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#how-to-step-1774404856675","name":"Step 1: Define Current Requirements","itemListElement":[{"@type":"HowToDirection","text":"Calculate the maximum current for each trace and power path."}]},{"@type":"HowToStep","url":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#how-to-step-1774404866333","name":"Step 2: Select Copper Thickness","itemListElement":[{"@type":"HowToDirection","text":"Choose between 3 oz, 4 oz, or higher based on current and thermal needs."}]},{"@type":"HowToStep","url":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#how-to-step-1774404874210","name":"Step 3: Optimize Trace Geometry","itemListElement":[{"@type":"HowToDirection","text":"Balance trace width and copper thickness for manufacturability."}]},{"@type":"HowToStep","url":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#how-to-step-1774404884142","name":"Step 4: Plan Thermal Management","itemListElement":[{"@type":"HowToDirection","text":"Add copper pours, heat sinks, or thermal vias where needed."}]},{"@type":"HowToStep","url":"https:\/\/www.topfastpcb.com\/blog\/heavy-copper-pcb\/#how-to-step-1774404893405","name":"Step 5: Validate with Manufacturer","itemListElement":[{"@type":"HowToDirection","text":"Work closely with your PCB supplier to confirm design rules and tolerances."}]}],"inLanguage":"fi"}]}},"_links":{"self":[{"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/posts\/5393","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/comments?post=5393"}],"version-history":[{"count":1,"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/posts\/5393\/revisions"}],"predecessor-version":[{"id":5398,"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/posts\/5393\/revisions\/5398"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/media\/5397"}],"wp:attachment":[{"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/media?parent=5393"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/categories?post=5393"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/tags?post=5393"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}