{"id":4325,"date":"2025-09-09T19:36:37","date_gmt":"2025-09-09T11:36:37","guid":{"rendered":"https:\/\/www.topfastpcb.com\/?p=4325"},"modified":"2025-09-09T19:36:41","modified_gmt":"2025-09-09T11:36:41","slug":"what-is-a-rigid-pcb","status":"publish","type":"post","link":"https:\/\/www.topfastpcb.com\/fi\/blog\/what-is-a-rigid-pcb\/","title":{"rendered":"Mik\u00e4 on j\u00e4ykk\u00e4 piirilevy ja miten se valmistetaan?"},"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\/what-is-a-rigid-pcb\/#What_is_a_Rigid_PCB_and_How_is_it_Manufactured\" >Mik\u00e4 on j\u00e4ykk\u00e4 piirilevy ja miten se valmistetaan?<\/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\/what-is-a-rigid-pcb\/#1_Characteristics_and_Advantages_of_Rigid_PCBs\" >1. J\u00e4ykkien piirilevyjen ominaisuudet ja edut<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/what-is-a-rigid-pcb\/#2_Manufacturing_Process_of_Rigid_PCBs\" >2. J\u00e4ykkien piirilevyjen valmistusprosessi<\/a><\/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\/what-is-a-rigid-pcb\/#3_How_to_Improve_the_Reliability_of_Rigid_PCBs\" >3. Kuinka parantaa j\u00e4ykkien piirilevyjen luotettavuutta?<\/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\/what-is-a-rigid-pcb\/#4_Rigid_PCB_vs_Flexible_PCB_How_to_Choose\" >4. J\u00e4ykk\u00e4 piirilevy vs. joustava piirilevy: miten valita?<\/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\/what-is-a-rigid-pcb\/#5_Application_Scenarios_and_Selection_Recommendations\" >5. Sovellustilanteet ja valintasuositukset<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_a_Rigid_PCB_and_How_is_it_Manufactured\"><\/span>Mik\u00e4 on <a href=\"https:\/\/www.topfastpcb.com\/fi\/products\/category\/rigid-pcb\/\">J\u00e4ykk\u00e4 piirilevy<\/a> Ja miten se valmistetaan?<span class=\"ez-toc-section-end\"><\/span><\/h2><p>J\u00e4ykk\u00e4 painettu piirilevy (PCB) on j\u00e4yk\u00e4lle alustalle perustuva painettu piirilevy, jolla on vakaa mekaaninen rakenne ja erinomainen s\u00e4hk\u00f6inen suorituskyky. Sit\u00e4 k\u00e4ytet\u00e4\u00e4n laajalti tietokoneissa, viestint\u00e4laitteissa, teollisuuden ohjauslaitteissa ja kulutuselektroniikassa, ja se tarjoaa luotettavat s\u00e4hk\u00f6liit\u00e4nn\u00e4t ja fyysisen tuen elektronisille komponenteille.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Characteristics_and_Advantages_of_Rigid_PCBs\"><\/span>1. J\u00e4ykkien piirilevyjen ominaisuudet ja edut<span class=\"ez-toc-section-end\"><\/span><\/h2><p>J\u00e4yk\u00e4t piirilevyt k\u00e4ytt\u00e4v\u00e4t p\u00e4\u00e4asiassa <strong>lasikuituvahvistettu epoksilaminaatti<\/strong> (kuten FR-4, CEM-3) perusmateriaalina, valmistettu laminointi-, kuvion siirto- ja etsausprosesseilla. Niiden t\u00e4rkeimm\u00e4t ominaisuudet ovat:<\/p><ul class=\"wp-block-list\"><li><strong>Korkea mekaaninen lujuus<\/strong>: J\u00e4ykk\u00e4 alusta tarjoaa korkean taivutus- ja t\u00e4rin\u00e4nkest\u00e4vyyden, mik\u00e4 sopii kiinteisiin asennuksiin.<\/li>\n\n<li><strong>Erinomainen s\u00e4hk\u00f6inen suorituskyky<\/strong>: Vakaa dielektrisyysvakio ja pieni signaalinsiirtotappio, tukee korkeataajuisia ja nopeita sovelluksia.<\/li>\n\n<li><strong>Hyv\u00e4 l\u00e4mp\u00f6stabiilisuus<\/strong>: L\u00e4mm\u00f6nkest\u00e4v\u00e4, lasittumisl\u00e4mp\u00f6tila (Tg) tyypillisesti yli 140 \u00b0C.<\/li>\n\n<li><strong>Korkea johdotustiheys<\/strong>: Tukee monikerroksisia rakenteita (yleens\u00e4 4\u201312 kerrosta), mik\u00e4 mahdollistaa monimutkaiset piirilevyasettelut.<\/li><\/ul><p>Joustavien piirilevyjen (Flex PCB) verrattuna j\u00e4yk\u00e4t piirilevyt ovat edullisempia ja niiden valmistusprosessit ovat kehittyneempi\u00e4, mutta ne ovat v\u00e4hemm\u00e4n joustavia ja kevyit\u00e4. Alla olevassa taulukossa verrataan n\u00e4iden kahden tyypin p\u00e4\u00e4ominaisuuksia:<\/p><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Ominaisuus<\/th><th>J\u00e4ykk\u00e4 piirilevy<\/th><th><a href=\"https:\/\/www.topfastpcb.com\/fi\/products\/category\/flexible-pcb\/\">Joustava piirilevy<\/a><\/th><\/tr><\/thead><tbody><tr><td><strong>Substraattityyppi<\/strong><\/td><td>FR-4, CEM-3 jne.<\/td><td>Polyimidi (PI), PET<\/td><\/tr><tr><td><strong>Joustavuus<\/strong><\/td><td>None<\/td><td>Taivutettava ja taitettava<\/td><\/tr><tr><td><strong>Paino<\/strong><\/td><td>Raskaampi<\/td><td>Kevyt (90 % kevyempi kuin j\u00e4ykk\u00e4)<\/td><\/tr><tr><td><strong>Kustannukset<\/strong><\/td><td>Matala (etu massatuotannossa)<\/td><td>Korkeampi<\/td><\/tr><tr><td><strong>Sovellukset<\/strong><\/td><td>Emolevyt, virtamoduulit<\/td><td>Puettavat laitteet, taitettavat n\u00e4yt\u00f6t<\/td><\/tr><\/tbody><\/table><\/figure><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"402\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/09\/Rigid-PCB-1.jpg\" alt=\"J\u00e4ykk\u00e4 piirilevy\" class=\"wp-image-4326\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/09\/Rigid-PCB-1.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/09\/Rigid-PCB-1-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/09\/Rigid-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=\"2_Manufacturing_Process_of_Rigid_PCBs\"><\/span>2. J\u00e4ykkien piirilevyjen valmistusprosessi<span class=\"ez-toc-section-end\"><\/span><\/h2><p>J\u00e4ykkien piirilevyjen valmistus on monivaiheinen, eritt\u00e4in tarkka prosessi, joka koostuu p\u00e4\u00e4asiassa seuraavista vaiheista:<\/p><ul class=\"wp-block-list\"><li><strong>Sis\u00e4kerroksen piirien tuotanto<\/strong><\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Leikkaaminen<\/strong>: Kuparip\u00e4\u00e4llysteinen laminaatti leikataan suunnittelumittoihin \u00b10,1 mm:n tarkkuudella.<\/li>\n\n<li><strong>Kalvon laminointi ja valotus<\/strong>: Valoherkk\u00e4 kuivakalvo levitet\u00e4\u00e4n ja piirikuvio siirret\u00e4\u00e4n UV-valotuksella.<\/li>\n\n<li><strong>Kehitys ja etsaus<\/strong>: Valottamattomat kuivakalvot ja kupari poistetaan johtavien piirien muodostamiseksi.<\/li>\n\n<li><strong>AOI-tarkastus<\/strong>: Automaattinen optinen tarkastus tarkistaa parametrit, kuten viivan leveyden ja v\u00e4lin.<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Laminointi ja puristaminen<\/strong><\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Ruskea hapettuminen<\/strong>: Paranna sis\u00e4isten kuparikerrosten ja prepreg-materiaalin v\u00e4list\u00e4 tarttuvuutta.<\/li>\n\n<li><strong>Kerrosten pinoaminen ja puristaminen<\/strong>: Useita kerroksia puristetaan yhteen korkeassa l\u00e4mp\u00f6tilassa (180\u2013200 \u00b0C) ja paineessa (300\u2013400 psi).<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Poraus ja metallointi<\/strong><\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Mekaaninen\/laserporaus<\/strong>: Luo l\u00e4pivientirei\u00e4t, umpiviat tai upotetut viat.<\/li>\n\n<li><strong>Kuparin kerrostuminen ja pinnoitus<\/strong>: Kemiallisesti kerrostettu ja galvanoitu kupari metallisoi reikien sein\u00e4m\u00e4t kerrosten v\u00e4lisi\u00e4 liitoksia varten.<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Ulkokerroksen piiri ja pintak\u00e4sittely<\/strong><\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Kuvion siirto<\/strong>: Laser Direct Imaging (LDI) -tekniikka luo ulkokerroksen piirit.<\/li>\n\n<li><strong>Juotosmaski ja silkkipaino<\/strong>: Juotosvastusmuste levitet\u00e4\u00e4n ja komponenttien merkinn\u00e4t tulostetaan.<\/li>\n\n<li><strong>Pinnan viimeistely<\/strong>: Prosessit, kuten HASL, ENIG tai OSP, valitaan sovelluksen tarpeiden perusteella.<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Testaus ja tarkastus<\/strong><\/li><\/ul><ul class=\"wp-block-list\"><li><strong>S\u00e4hk\u00f6inen testaus<\/strong>: Jatkuvuus testattu lent\u00e4v\u00e4ll\u00e4 koettimella tai naulamatotestill\u00e4.<\/li>\n\n<li><strong>Luotettavuuden validointi<\/strong>: Sis\u00e4lt\u00e4\u00e4 l\u00e4mp\u00f6syklit, korkean l\u00e4mp\u00f6tilan\/kosteuden testit, impedanssitestit jne.<\/li><\/ul><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_How_to_Improve_the_Reliability_of_Rigid_PCBs\"><\/span>3. Kuinka parantaa j\u00e4ykkien piirilevyjen luotettavuutta?<span class=\"ez-toc-section-end\"><\/span><\/h2><p>J\u00e4ykkien piirilevyjen luotettavuuden parantamiseksi vaativissa olosuhteissa tarvitaan materiaalien, suunnittelun, valmistuksen ja testausprosessien j\u00e4rjestelm\u00e4llist\u00e4 optimointia:<\/p><ul class=\"wp-block-list\"><li><strong>Materiaalin valinta<\/strong><\/li><\/ul><ul class=\"wp-block-list\"><li>K\u00e4yt\u00e4 korkeataajuuksisissa sovelluksissa <strong>PTFE-substraatit<\/strong> (Dk\u22483,0, Df&lt;0,005).<\/li>\n\n<li>K\u00e4yt\u00e4 korkean l\u00e4mp\u00f6tilan ymp\u00e4rist\u00f6iss\u00e4 (esim. autoelektroniikka) <strong>korkea Tg FR-4<\/strong> (Tg\u2265170 \u00b0C).<\/li>\n\n<li>L\u00e4mm\u00f6n haihtumistarpeisiin k\u00e4yt\u00e4 <strong>metallipohjaiset substraatit<\/strong> (alumiinisyd\u00e4men l\u00e4mm\u00f6njohtavuus 1\u20133 W\/m\u00b7K).<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Suunnittelun optimointi<\/strong><\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Maadoitussuunnittelu<\/strong>: K\u00e4yt\u00e4 monipisteist\u00e4 maadoitusta korkeataajuisille piireille ja yksipisteist\u00e4 matalataajuisille piireille.<\/li>\n\n<li><strong>L\u00e4mm\u00f6nhallinta<\/strong>: Lis\u00e4\u00e4 l\u00e4mp\u00f6viat, k\u00e4yt\u00e4 paksua kuparifoliota (\u22652 oz).<\/li>\n\n<li><strong>Signaalin eheys<\/strong>: Impedanssin poikkeama \u00b110 %, viivan leveyden toleranssi \u00b10,05 mm.<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Prosessin valvonta<\/strong><\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Laminointiprosessi<\/strong>: Tyhji\u00f6puristus v\u00e4hent\u00e4\u00e4 kerrosten v\u00e4lisi\u00e4 kuplia.<\/li>\n\n<li><strong>Porauksen tarkkuus<\/strong>: Rei\u00e4n sijaintivirhe \u226450\u03bcm, kuvasuhde \u22648:1.<\/li>\n\n<li><strong>Juotosprosessi<\/strong>: K\u00e4yt\u00e4 lyijyt\u00f6nt\u00e4 SAC305-juotetta, reflow-huipun l\u00e4mp\u00f6tila 245 \u00b0C \u00b1 5 \u00b0C.<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Testausstandardit<\/strong><\/li><\/ul><ul class=\"wp-block-list\"><li>Noudata alan standardeja, kuten <strong>IPC-6012<\/strong> ja <strong>IPC-A-600<\/strong>.<\/li>\n\n<li>Suorita ymp\u00e4rist\u00f6stressitestaus (ESS), esim. 1000 l\u00e4mp\u00f6sykli\u00e4 (-40 \u00b0C \u2013 125 \u00b0C).<\/li><\/ul><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"402\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/09\/Rigid-PCB-1-1.jpg\" alt=\"J\u00e4ykk\u00e4 piirilevy\" class=\"wp-image-4327\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/09\/Rigid-PCB-1-1.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/09\/Rigid-PCB-1-1-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/09\/Rigid-PCB-1-1-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Rigid_PCB_vs_Flexible_PCB_How_to_Choose\"><\/span>4. J\u00e4ykk\u00e4 piirilevy vs. joustava piirilevy: miten valita?<span class=\"ez-toc-section-end\"><\/span><\/h2><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Harkinta<\/th><th>Sopii j\u00e4ykille piirilevyille<\/th><th>Sopii joustaville piirilevyille<\/th><\/tr><\/thead><tbody><tr><td><strong>Mekaaninen ymp\u00e4rist\u00f6<\/strong><\/td><td>Kiinte\u00e4 asennus, voimakas t\u00e4rin\u00e4<\/td><td>Taivutettava, dynaaminen taittuvuus<\/td><\/tr><tr><td><strong>Kustannusherkkyys<\/strong><\/td><td>Massatuotanto, kustannusten hallinta<\/td><td>Pieni volyymi, korkean arvon tuotteet<\/td><\/tr><tr><td><strong>Tilan rajoitukset<\/strong><\/td><td>Riitt\u00e4v\u00e4 tila<\/td><td>Suljetut tai ep\u00e4s\u00e4\u00e4nn\u00f6lliset tilat<\/td><\/tr><tr><td><strong>L\u00e4mm\u00f6n haihtuminen<\/strong><\/td><td>Suuritehoiset komponentit, aktiivinen j\u00e4\u00e4hdytys<\/td><td>Pieni teho, passiivinen j\u00e4\u00e4hdytys<\/td><\/tr><tr><td><strong>Signaalin taajuus<\/strong><\/td><td>Korkea taajuus\/nopeus (&gt;10 GHz) erityisill\u00e4 materiaaleilla<\/td><td>Yleinen taajuus (&lt;5 GHz)<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Application_Scenarios_and_Selection_Recommendations\"><\/span>5. Sovellustilanteet ja valintasuositukset<span class=\"ez-toc-section-end\"><\/span><\/h2><ul class=\"wp-block-list\"><li><strong>Viihde-elektroniikka<\/strong> (emolevyt, laitteet): FR-4 suositeltava edullisen hinnan ja kehittyneen prosessin vuoksi.<\/li>\n\n<li><strong>Teollinen ohjaus<\/strong> (PLC:t, anturit): Vaaditaan korkea luotettavuus; suositellaan korkean Tg:n FR-4- tai monikerroksisia levyj\u00e4.<\/li>\n\n<li><strong>Autoteollisuuden elektroniikka<\/strong> (ECU, tutka): Vaatii korkean l\u00e4mp\u00f6tilan kest\u00e4vyytt\u00e4 ja t\u00e4rin\u00e4nkest\u00e4vyytt\u00e4; metallinen tai keraaminen substraatti on valinnainen.<\/li>\n\n<li><strong>Viestint\u00e4laitteet<\/strong> (5G-tukiasemat, RF-moduulit): Korkeataajuiset sovellukset edellytt\u00e4v\u00e4t PTFE- tai Rogers-materiaaleja.<\/li><\/ul><p><\/p>","protected":false},"excerpt":{"rendered":"<p>J\u00e4ykkien piirilevyjen ominaisuudet, valmistusprosessit ja keskeiset tekniikat esitet\u00e4\u00e4n ja verrataan joustaviin piirilevyihin. Asiakirjassa syvennyt\u00e4\u00e4n luotettavuuden parantamiseen materiaalivalinnan, suunnittelun optimoinnin ja prosessin hallinnan avulla. Erilaisille sovellustilanteille annetaan erityisi\u00e4 valintasuosituksia ja luotettavuuden suunnitteluohjeita.<\/p>","protected":false},"author":1,"featured_media":4328,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[112],"tags":[111,367],"class_list":["post-4325","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge","tag-pcb","tag-rigid-pcb"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is a rigid PCB, and how is a rigid PCB manufactured? - Topfastpcb<\/title>\n<meta name=\"description\" content=\"Manufacturing Processes, Material Selection, and Reliability Design for Rigid PCBs Covering key technologies such as FR-4, high-Tg substrates, multilayer lamination, and impedance control Providing a comparison and selection guide for rigid\/flexible PCBs\" \/>\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\/what-is-a-rigid-pcb\/\" \/>\n<meta property=\"og:locale\" content=\"fi_FI\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is a rigid PCB, and how is a rigid PCB manufactured? 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