{"id":2945,"date":"2025-06-01T08:32:00","date_gmt":"2025-06-01T00:32:00","guid":{"rendered":"https:\/\/www.topfastpcb.com\/?p=2945"},"modified":"2025-05-28T18:34:39","modified_gmt":"2025-05-28T10:34:39","slug":"what-is-pcb-surface-finishes","status":"publish","type":"post","link":"https:\/\/www.topfastpcb.com\/fi\/blog\/what-is-pcb-surface-finishes\/","title":{"rendered":"Mik\u00e4 on PCB-pintak\u00e4sittelyt?"},"content":{"rendered":"<p>PCB-pintak\u00e4sittely viittaa painetun piirilevyn altistuvaan kuparifolion alueeseen (kuten tyynyihin, johtaviin polkuihin), joka on p\u00e4\u00e4llystetty metalli- tai metalliseospinnoitteella, kuten \"suojaavan esteen\" ja \"hitsausv\u00e4lineen\" kuparipinta.<\/p><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-pcb-surface-finishes\/#PCB_Surface_Finishing_Core_Functions\" >PCB-pintak\u00e4sittelyn ydintoiminnot<\/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-pcb-surface-finishes\/#The_importance_of_PCB_surface_treatment\" >PCB-pintak\u00e4sittelyn merkitys<\/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\/what-is-pcb-surface-finishes\/#Core_purpose_to_solve_the_%E2%80%9Coxidation_problem%E2%80%9D_of_the_copper_surface\" >Ydintarkoitus: ratkaista kuparin pinnan \"hapettumisongelma\".<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/what-is-pcb-surface-finishes\/#Industry_Importance_a_critical_process_throughout_the_PCB_life_cycle\" >Teollisuuden merkitys: kriittinen prosessi koko PCB:n elinkaaren ajan.<\/a><\/li><\/ul><\/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-pcb-surface-finishes\/#In-Depth_Comparison_of_7_PCB_Surface_Finishes\" >7 PCB-pintak\u00e4sittelyn syv\u00e4llinen vertailu<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/what-is-pcb-surface-finishes\/#1_Hot_Air_Solder_Leveling_HASL\" >1. Kuumailmajuotoksen tasoitus (HASL)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/what-is-pcb-surface-finishes\/#2_Electroless_Nickel_Immersion_Gold_ENIG\" >2.S\u00e4hk\u00f6suojattu nikkelikuorrutuskulta (ENIG)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/what-is-pcb-surface-finishes\/#3_Organic_Solderability_Preservative_OSP\" >3.Orgaaninen juotettavuuden s\u00e4il\u00f6nt\u00e4aine (OSP)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/what-is-pcb-surface-finishes\/#4_Immersion_Tin_ImSn\" >4.Upotustina (ImSn)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/what-is-pcb-surface-finishes\/#5_Immersion_Silver_ImAg\" >5.Upotushopea (ImAg)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/what-is-pcb-surface-finishes\/#6_Electroless_Nickel_Electroless_Palladium_Immersion_Gold_ENEPIG\" >6.S\u00e4hk\u00f6suojattu nikkeli S\u00e4hk\u00f6suojattu palladium upotuskulta (ENEPIG)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/what-is-pcb-surface-finishes\/#7_Electrolytic_Hard_Gold\" >7.Elektrolyyttinen kova kulta<\/a><\/li><\/ul><\/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\/what-is-pcb-surface-finishes\/#Selection_Decision_Tree\" >Valinta P\u00e4\u00e4t\u00f6spuu<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/what-is-pcb-surface-finishes\/#5_Common_Failure_Clinics\" >5 yleist\u00e4 ep\u00e4onnistumisen klinikkaa<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/what-is-pcb-surface-finishes\/#Pro_Tips_from_PCB_Manufacturers\" >Pro-vinkkej\u00e4 PCB-valmistajilta<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/what-is-pcb-surface-finishes\/#Cost-Performance_Tradeoff_Analysis\" >Kustannusten ja suorituskyvyn vertailuanalyysi<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.topfastpcb.com\/fi\/blog\/what-is-pcb-surface-finishes\/#Future_Trends_in_Surface_Finishes\" >Pintak\u00e4sittelyn tulevat suuntaukset<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"PCB_Surface_Finishing_Core_Functions\"><\/span>PCB-pintak\u00e4sittelyn ydintoiminnot<span class=\"ez-toc-section-end\"><\/span><\/h2><p>Fyysinen suojaus: Erist\u00e4\u00e4 kuparin kosketukselta ilman ja kosteuden kanssa ja est\u00e4\u00e4 hapettumisen, sulfidoitumisen ja muut sy\u00f6vytt\u00e4v\u00e4t reaktiot;<br>Juotettavuuden optimointi:Juotoksen (esim. juotospastan) ja kuparikerroksen v\u00e4lisen luotettavan yhteyden varmistamiseksi tasainen ja vakaa juotosrajapinta;<br>S\u00e4hk\u00f6isen suorituskyvyn takuu: piirin johtamisen vakauden s\u00e4ilytt\u00e4minen, impedanssipoikkeavuuksien tai oikosulkuriskin v\u00e4ltt\u00e4minen kuparipinnan heikkenemisen vuoksi.<\/p><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\/05\/PCB-Surface-Finishes-1.jpg\" alt=\"PCB-pintak\u00e4sittelyt\" class=\"wp-image-2948\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes-1.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes-1-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes-1-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"The_importance_of_PCB_surface_treatment\"><\/span>PCB-pintak\u00e4sittelyn merkitys<span class=\"ez-toc-section-end\"><\/span><\/h2><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Core_purpose_to_solve_the_%E2%80%9Coxidation_problem%E2%80%9D_of_the_copper_surface\"><\/span>Ydintarkoitus: ratkaista kuparin pinnan \"hapettumisongelma\".<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Kupari huoneenl\u00e4mm\u00f6ss\u00e4 hapen kanssa ilmassa, vesih\u00f6yryn kosketuksessa syntyy kuparioksidia (CuO) tai em\u00e4ksist\u00e4 kuparikarbonaattia (kupari vihre\u00e4), n\u00e4m\u00e4 hapettuneet kerrokset v\u00e4hent\u00e4v\u00e4t merkitt\u00e4v\u00e4sti juottamisen kostutettavuutta &#8212; erityisesti ilmenee juotoksena \"kielt\u00e4ytyy juottamasta\", juotosliitokset v\u00e4\u00e4ri\u00e4 tai halkeamia. Pintak\u00e4sittelyll\u00e4 varmistetaan, ett\u00e4 kuparin pinta on aktiivinen juottamisen aikana peitt\u00e4m\u00e4ll\u00e4 se pinnoitteella, joka est\u00e4\u00e4 radikaalisti kuparin&#8217;kosketuspolun hapettimen kanssa.<\/p><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Industry_Importance_a_critical_process_throughout_the_PCB_life_cycle\"><\/span>Teollisuuden merkitys: kriittinen prosessi koko PCB:n elinkaaren ajan.<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>1.Valmistus<\/strong><br>Varmista SMT (Surface Mount Technology) -tuotot ja v\u00e4henn\u00e4 huonosta juotettavuudesta johtuvia j\u00e4lkity\u00f6kustannuksia;<br>Pinnoitteen tasaisuus vaikuttaa suoraan komponenttien mekaaniseen lujuuteen juottamisen j\u00e4lkeen (esim. juotosliitoksen j\u00e4nnitys, leikkausvoima).<\/p><p><strong>2.Storage ja kuljetus<br><\/strong>Pitk\u00e4aikaisessa varastoinnissa pinnoite voi vastustaa kosteutta, suolasuihkua ja muita ymp\u00e4rist\u00f6tekij\u00f6it\u00e4 eroosiota (kuten rannikkoalueita, joilla on laitteita, PCB: n on kiinnitett\u00e4v\u00e4 erityist\u00e4 huomiota kykyyn est\u00e4\u00e4 ruoste);<br>V\u00e4lt\u00e4 kitkan ja t\u00f6rm\u00e4ysten aiheuttamia kuparin pinnan vaurioita kuljetuksen aikana.<\/p><p><strong>3.Sopeutuminen kohtausten k\u00e4ytt\u00f6\u00f6n<br><\/strong>Korkean l\u00e4mp\u00f6tilan ymp\u00e4rist\u00f6iss\u00e4 (kuten autoelektroniikassa ja teollisuuden ohjauksessa) pinnoitteelta vaaditaan ik\u00e4\u00e4ntymisenkest\u00e4vyytt\u00e4, jotta estet\u00e4\u00e4n pinnoitteen hajoaminen tai hapettuminen korkeissa l\u00e4mp\u00f6tiloissa;<br>Korkeataajuuspiireiss\u00e4 pinnoitteen tasaisuus vaikuttaa signaalin siirtoh\u00e4vi\u00f6\u00f6n (esim. upotuskultaa k\u00e4ytet\u00e4\u00e4n yleisesti RF-piirilevyiss\u00e4, koska pinnoitteen tasaisuus on hyv\u00e4).<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"In-Depth_Comparison_of_7_PCB_Surface_Finishes\"><\/span>7 PCB-pintak\u00e4sittelyn syv\u00e4llinen vertailu<span class=\"ez-toc-section-end\"><\/span><\/h2><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Hot_Air_Solder_Leveling_HASL\"><\/span>1. Kuumailmajuotoksen tasoitus (HASL)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Prosessin periaate<\/strong>:<br>Piirilevyn upottaminen 260 \u00b0C:n sulaan juotteeseen (Sn63Pb37 tai SAC305), jota seuraa ylim\u00e4\u00e4r\u00e4isen juotteen poistaminen korkeapaineisella kuumalla ilmalla (400 \u00b0C), luo ep\u00e4tasaisia &#8220;m\u00e4kisi\u00e4&#8221; pintoja.<\/p><p><strong>Ihanteellinen<\/strong>:<\/p><ul class=\"wp-block-list\"><li>Viihde-elektroniikka (laturit, LED-ohjaimet)<\/li>\n\n<li>Kustannusherk\u00e4t suuren volyymin tilaukset<\/li><\/ul><p><strong>Kova oppitunti<\/strong>:<br>Reititinvalmistaja havaitsi lyijyt\u00f6nt\u00e4 HASL-levy\u00e4 k\u00e4ytett\u00e4ess\u00e4 laajalle levinneit\u00e4 BGA-aukkoja ja lis\u00e4si lopulta &#8220;tyynyn esipinnoitus&#8221; -vaiheen, joka nosti kustannuksia 0,17 dollaria\/levy.<\/p><p><strong>Kriittiset tarkastukset<\/strong>:<\/p><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Parametri<\/th><th>Kohde<\/th><th>Poikkeamariski<\/th><\/tr><\/thead><tbody><tr><td>Juotos Cu-pitoisuus<\/td><td>&lt;0.7%<\/td><td>Hauraat juotosliitokset<\/td><\/tr><tr><td>Ilmaveitsen kulma<\/td><td>75\u00b0\u00b12\u00b0<\/td><td>Ep\u00e4tasainen paksuus<\/td><\/tr><tr><td>J\u00e4\u00e4hdytysnopeus<\/td><td>&gt;4\u00b0C\/s<\/td><td>Liiallinen karheus<\/td><\/tr><\/tbody><\/table><\/figure><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Electroless_Nickel_Immersion_Gold_ENIG\"><\/span>2.S\u00e4hk\u00f6suojattu nikkelikuorrutuskulta (ENIG)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Kerrosrakenne<\/strong>:<br>&#8220;Sandwich&#8221; deposition: S\u00e4hk\u00f6t\u00f6n Ni (3-5\u03bcm) \u2192 syrj\u00e4ytys Au (0,05-0,1\u03bcm). Ni toimii kuparin &#8220;palomuurina,&#8221; Au &#8220;juotosrajapintana&#8221;<\/p><p><strong>Korkean taajuuden tapaustutkimus<\/strong>:<br>Er\u00e4s mmWave-tutkalevy valitsi ENIG:n OSP:n sijasta, koska Au:n ihovaikutush\u00e4vi\u00f6 oli 23 % pienempi (77 GHz:n taajuudella).<\/p><p><strong>Mustan tyynyn analyysi<\/strong>:<br>Kun Ni-kylpy ylitt\u00e4\u00e4 91 \u00b0C, fosforin erottuminen muodostaa hauraita Ni3P-faaseja (SEM osoittaa &#8220;s\u00e4r\u00f6ill\u00e4&#8221; morfologiaa). Ehk\u00e4isy:<\/p><ul class=\"wp-block-list\"><li>Lis\u00e4t\u00e4\u00e4n sitruunahappopuskuria<\/li>\n\n<li>Pulssipinnoituksen toteuttaminen<\/li>\n\n<li>Sis\u00e4lt\u00e4\u00e4 mikroetsauksen ennen Au-pinnoitusta<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Organic_Solderability_Preservative_OSP\"><\/span>3.Orgaaninen juotettavuuden s\u00e4il\u00f6nt\u00e4aine (OSP)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Molekyylisuojaus<\/strong>:<br>Bentsimidatsoli-kuparikelaatit muodostavat 0,2-0,5 \u03bcm:n kalvoja, jotka kest\u00e4v\u00e4t 6 kuukauden luonnollista hapettumista.<\/p><p><strong>5G Preferred Choice<\/strong>:<br>Tukiaseman AAU-levy, jossa k\u00e4ytettiin OSP+LDI:t\u00e4, s\u00e4\u00e4sti 4,2 dollaria\/m\u00b2 verrattuna ENIG:iin 0,3 dB\/cm alhaisemmalla insertioh\u00e4vi\u00f6ll\u00e4 (@28 GHz).<\/p><p><strong>S\u00e4ilytys \u00c4l\u00e4&#8217;t<\/strong>:<\/p><ul class=\"wp-block-list\"><li>RH&gt;60% aiheuttaa kalvon hydrolyysin<\/li>\n\n<li>Rikki\u00e4 sis\u00e4lt\u00e4v\u00e4t pakkaukset aiheuttavat Cu2S-mustia t\u00e4pli\u00e4.<\/li>\n\n<li>SMT:n on oltava valmis 24 tunnin kuluessa pakkauksen purkamisesta.<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Immersion_Tin_ImSn\"><\/span>4.Upotustina (ImSn)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Mikrorakenne<\/strong>:<br>Cu6Sn5 intermetallien paksuus (ihanteellinen: 1,2-1,8\u03bcm EDX:n avulla) m\u00e4\u00e4ritt\u00e4\u00e4 luotettavuuden.<\/p><p><strong>Autoteollisuuden menestys<\/strong>:<br>ECU-moduuli l\u00e4p\u00e4isi 3000x -40\u00b0C~125\u00b0C sykli\u00e4 ImSn:ll\u00e4 verrattuna ENIG:n 2400x sykliin.<\/p><p><strong>Prosessiriskit<\/strong>:<\/p><ul class=\"wp-block-list\"><li>Tina-viiksien kasvu (estet\u00e4\u00e4n reflow-esi-vanhentamisella).<\/li>\n\n<li>Ristikontaminaatio kaksipuolisissa levyiss\u00e4<\/li>\n\n<li>Yhteensopimaton Al-langan liimauksen kanssa<\/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\/05\/PCB-Surface-Finishes-2.jpg\" alt=\"PCB-pintak\u00e4sittelyt\" class=\"wp-image-2949\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes-2.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes-2-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes-2-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Immersion_Silver_ImAg\"><\/span>5.Upotushopea (ImAg)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Signaalin eheys Edge<\/strong>:<br>10 GHz:n insertioh\u00e4vi\u00f6 on 15 % pienempi kuin ENIG (IPC-6012B:n mukaan).<\/p><p><strong>Siirtolaisuuden vastatoimet<\/strong>:<br>&#8220;Nanohiukkasten seostaminen&#8221; nostaa siirtymiskynnyksen 3,1 V:sta 5,6 V:iin 48 V:n tehomoduuleissa.<\/p><p><strong>Paksuuden s\u00e4\u00e4t\u00f6<\/strong>:<\/p><ul class=\"wp-block-list\"><li>Natriumtiosulfaatti inhibiittorina<\/li>\n\n<li>Suihkupinnoituss\u00e4ili\u00f6<\/li>\n\n<li>Kromaattipassivointi j\u00e4lkik\u00e4sittelyn j\u00e4lkeen<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6_Electroless_Nickel_Electroless_Palladium_Immersion_Gold_ENEPIG\"><\/span>6.S\u00e4hk\u00f6suojattu nikkeli S\u00e4hk\u00f6suojattu palladium upotuskulta (ENEPIG)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Kerrosinnovaatio<\/strong>:<br>0,1-0,2\u03bcm Pd Nin (3-4\u03bcm) ja Au:n (0,03-0,05\u03bcm) v\u00e4liss\u00e4 est\u00e4\u00e4 Au:n diffuusion.<\/p><p><strong>SiP-sovellus<\/strong>:<br>3D-paketti, joka on saatu aikaan sekoitettu Au-lanka\/SnAgCu-juottamalla ENEPIG:ll\u00e4.<\/p><p><strong>Kustannusten optimointi<\/strong>:<\/p><ul class=\"wp-block-list\"><li>Gradientti Pd-paksuus (0,15\u03bcm reuna\/0,08\u03bcm keskell\u00e4)<\/li>\n\n<li>Pd-Co-seos puhtaan Pd:n sijasta.<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"7_Electrolytic_Hard_Gold\"><\/span>7.Elektrolyyttinen kova kulta<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Sotilasluokan suojaus<\/strong>:<br>Co-dopedoitu Au (1-3\u03bcm), jonka kovuus on 180HV, kest\u00e4\u00e4 50 kertaa enemm\u00e4n kulutusta kuin ENIG.<\/p><p><strong>Liittimen tekniset tiedot<\/strong>:<\/p><ul class=\"wp-block-list\"><li>Kultainen sormen viiste: 30\u00b0\u00b11\u00b0.<\/li>\n\n<li>Ni-paksuus \u22655\u03bcm<\/li>\n\n<li>Vaaditaan 3 mm:n siirtym\u00e4vy\u00f6hykkeet<\/li><\/ul><p><strong>Kustannusloukku<\/strong>:<br>Taustalevyn virheellinen pinnoitusalue nosti viimeistelykustannukset 8 prosentista 34 prosenttiin kokonaiskustannuksista.<\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Selection_Decision_Tree\"><\/span>Valinta P\u00e4\u00e4t\u00f6spuu<span class=\"ez-toc-section-end\"><\/span><\/h2><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"723\" height=\"549\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/Selection-Decision-Tree.jpg\" alt=\"Valinta P\u00e4\u00e4t\u00f6spuu\" class=\"wp-image-2946\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/Selection-Decision-Tree.jpg 723w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/Selection-Decision-Tree-300x228.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/Selection-Decision-Tree-16x12.jpg 16w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/Selection-Decision-Tree-600x456.jpg 600w\" sizes=\"auto, (max-width: 723px) 100vw, 723px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Common_Failure_Clinics\"><\/span>5 yleist\u00e4 ep\u00e4onnistumisen klinikkaa<span class=\"ez-toc-section-end\"><\/span><\/h2><p><strong>Q1: Mustat j\u00e4\u00e4m\u00e4t ENIG-tyynyiss\u00e4 uudelleenjuoksutuksen j\u00e4lkeen?<\/strong><br>\u2192 &#8220;Kullan haurastuminen&#8221;! Tarkista heti:<\/p><ol class=\"wp-block-list\"><li>Ni-P-pitoisuus (optimaalinen 7-9 %)<\/li>\n\n<li>Au-paksuus &gt; 0,08\u03bcm?<\/li>\n\n<li>Juotospasta Bi-pitoisuus<\/li><\/ol><p><strong>Q2: Tinaviikset ImSn:ss\u00e4 3 kuukauden varastoinnin j\u00e4lkeen?<\/strong><br>\u2192 Suorita &#8220;rescue trio&#8221;:<\/p><ol class=\"wp-block-list\"><li>150 \u00b0C:n paisto 2 tuntia<\/li>\n\n<li>Levit\u00e4 diffuusionesto nanopinnoite<\/li>\n\n<li>Vaihda mattapintaiseen tinaprosessiin<\/li><\/ol><p><strong>Kysymys 3: OSP-levyjen kostuvuus on huono useiden uudelleenvirtausten j\u00e4lkeen?<\/strong><br>\u2192 Orgaaninen kalvo hajoaa! Toimi seuraavasti:<\/p><ol class=\"wp-block-list\"><li>Tarkista, ett\u00e4 reflow-huippul\u00e4mp\u00f6tila ei ylitt\u00e4nyt 245 \u00b0C:ta.<\/li>\n\n<li>Tarkista s\u00e4ilytysaika &#8211; OSP hajoaa 6 kuukauden kuluttua.<\/li>\n\n<li>Harkitse typpi-ilmakeh\u00e4n lis\u00e4\u00e4mist\u00e4 uudelleenjuoksutuksen aikana<\/li><\/ol><p><strong>Q4: ENEPIG-levyt ep\u00e4onnistuvat vetotesteiss\u00e4?<\/strong><br>\u2192 Yleens\u00e4 palladiumkerroksen kysymys:<\/p><ol class=\"wp-block-list\"><li>Mittaa Pd-paksuus (0,15-0,25\u03bcm ihanteellinen).<\/li>\n\n<li>Tarkistetaan, onko Pd hapettunut (suositellaan XPS-analyysia).<\/li>\n\n<li>S\u00e4\u00e4det\u00e4\u00e4n PD-kylvyn pH 8,2-8,6:n v\u00e4lille.<\/li><\/ol><p><strong>Q5: Onko HASL-levyill\u00e4 ep\u00e4tasainen juotospaksuus?<\/strong><br>\u2192 Ilmaveitsen kalibrointi tarpeen:<\/p><ol class=\"wp-block-list\"><li>Tarkista ilmaveitsen paine (tyypillisesti 25-35 psi).<\/li>\n\n<li>Tarkista tasausaika (3-5 sekuntia optimaalinen)<\/li>\n\n<li>Tarkasta levytukikiinnikkeet v\u00e4\u00e4ntymisen varalta.<\/li><\/ol><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Pro_Tips_from_PCB_Manufacturers\"><\/span>Ammattilaisten vinkkej\u00e4 <a href=\"https:\/\/www.topfastpcb.com\/fi\/\">PCB-valmistajat<\/a><span class=\"ez-toc-section-end\"><\/span><\/h2><ol class=\"wp-block-list\"><li><strong>HASL<\/strong> &#8211; Kaksipuolisia levyj\u00e4 varten pyyd\u00e4 &#8220; dual dip&#8221; -k\u00e4sittely\u00e4 varjovaikutuksen est\u00e4miseksi.<\/li>\n\n<li><strong>ENIG<\/strong> &#8211; M\u00e4\u00e4rit\u00e4 aina &#8220;mid-phosphorus&#8221; nikkeli (6-9% P) parhaan luotettavuuden saavuttamiseksi.<\/li>\n\n<li><strong>OSP<\/strong> &#8211; Korkean luotettavuuden sovelluksiin kannattaa valita &#8220;Tyyppi 3&#8221; OSP-formulaatiot.<\/li>\n\n<li><strong>ImSn<\/strong> &#8211; S\u00e4ilytys typpikaapissa pident\u00e4\u00e4 s\u00e4ilyvyysaikaa 6-12 kuukautta.<\/li>\n\n<li><strong>ImAg<\/strong> &#8211; Lis\u00e4\u00e4 ruosteenestok\u00e4sittely\u00e4, jos levyt altistuvat useille l\u00e4mp\u00f6sykleille.<\/li>\n\n<li><strong>ENEPIG<\/strong> &#8211; M\u00e4\u00e4rit\u00e4 &#8220;low-stress nikkeli&#8221; joustaviin PCB-sovelluksiin<\/li>\n\n<li><strong>Kovaa kultaa<\/strong> &#8211; Kobolttipitoisuuden tulisi olla 0,1-0,3 % optimaalisen kulutuskest\u00e4vyyden saavuttamiseksi.<\/li><\/ol><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cost-Performance_Tradeoff_Analysis\"><\/span>Kustannusten ja suorituskyvyn vertailuanalyysi<span class=\"ez-toc-section-end\"><\/span><\/h2><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Viimeistely<\/th><th>Suhteelliset kustannukset<\/th><th>Juotettavuus<\/th><th>S\u00e4ilyvyys<\/th><th>Signaalin menetys<\/th><\/tr><\/thead><tbody><tr><td>HASL<\/td><td>$<\/td><td>\u2605\u2605\u2605\u2605\u2606<\/td><td>12 kuukautta<\/td><td>Korkea<\/td><\/tr><tr><td>ENIG<\/td><td>$$$$<\/td><td>\u2605\u2605\u2605\u2606\u2606<\/td><td>12 kuukautta<\/td><td>Medium<\/td><\/tr><tr><td>OSP<\/td><td>$<\/td><td>\u2605\u2605\u2605\u2605\u2606<\/td><td>6 kuukautta<\/td><td>Alhaisin<\/td><\/tr><tr><td>ImSn<\/td><td>$$<\/td><td>\u2605\u2605\u2605\u2605\u2605<\/td><td>6 kuukautta<\/td><td>Medium<\/td><\/tr><tr><td>ImAg<\/td><td>$$$<\/td><td>\u2605\u2605\u2605\u2605\u2606<\/td><td>9 kuukautta<\/td><td>Matala<\/td><\/tr><tr><td>ENEPIG<\/td><td>$$$$$<\/td><td>\u2605\u2605\u2605\u2606\u2606<\/td><td>12 kuukautta<\/td><td>Medium<\/td><\/tr><tr><td>Kovaa kultaa<\/td><td>$$$$$$<\/td><td>\u2605\u2605\u2606\u2606\u2606<\/td><td>24 kuukautta<\/td><td>Korkea<\/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\/05\/PCB-Surface-Finishes-4.jpg\" alt=\"PCB-pintak\u00e4sittelyt\" class=\"wp-image-2950\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes-4.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes-4-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes-4-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Future_Trends_in_Surface_Finishes\"><\/span>Pintak\u00e4sittelyn tulevat suuntaukset<span class=\"ez-toc-section-end\"><\/span><\/h2><ol class=\"wp-block-list\"><li><strong>Nanokomposiitti OSP<\/strong> &#8211; Grafeenilla parannetut valmisteet osoittavat kokeissa 2x pidemp\u00e4\u00e4 s\u00e4ilyvyytt\u00e4.<\/li>\n\n<li><strong>Matalan l\u00e4mp\u00f6tilan ENIG<\/strong> &#8211; Uudet kemikaalit mahdollistavat prosessoinnin 65 \u00b0C:ssa verrattuna perinteiseen 85 \u00b0C:n l\u00e4mp\u00f6tilaan<\/li>\n\n<li><strong>Valikoiva viimeistely<\/strong> &#8211; Eri pintak\u00e4sittelyjen yhdist\u00e4minen yksitt\u00e4isiss\u00e4 levyiss\u00e4 (esim. ENIG + OSP).<\/li>\n\n<li><strong>Itsens\u00e4 parantavat elokuvat<\/strong> &#8211; Kokeellinen OSP, joka korjaa pienet naarmut uudelleenjuoksutuksen aikana.<\/li>\n\n<li><strong>Halogeenittomat prosessit<\/strong> &#8211; Tulevien EU:n ymp\u00e4rist\u00f6m\u00e4\u00e4r\u00e4ysten noudattaminen<\/li><\/ol><p>Kun arvioit pintak\u00e4sittelyj\u00e4, muista: ei ole olemassa mit\u00e4\u00e4n yleisp\u00e4tev\u00e4\u00e4 &#8220;parasta&#8221; vaihtoehtoa &#8211; vain sopivin ratkaisu erityisiin suunnitteluvaatimuksiin, budjettirajoituksiin ja valmistusvalmiuksiin. Kallein pintak\u00e4sittely ei v\u00e4ltt\u00e4m\u00e4tt\u00e4 ole oikea valinta, samoin kuin edullisin vaihtoehto voi johtaa kentt\u00e4virheisiin. Suorita aina reaalimaailman testit todellisella piirilevysuunnittelulla ja komponenteilla, ennen kuin viimeistelet valintasi.<\/p>","protected":false},"excerpt":{"rendered":"<p>Piirilevyjen pintak\u00e4sittelyt vaikuttavat ratkaisevasti tuotteiden luotettavuuteen aina kulutuselektroniikasta ilmailu- ja avaruuslaitteisiin.T\u00e4ss\u00e4 oppaassa tarkastellaan 7 valtavirran prosessia mikrorakennetasolla, vertaillaan kustannuksia\/suorituskyky\u00e4, paljastetaan vikamekanismit, kuten ENIG black pad ja OSP carbonization, ja tarjotaan optimaaliset valintastrategiat eri budjeteille\/vaatimuksille. 15 toukokuun 2025 - Topfastpcb<\/p>","protected":false},"author":1,"featured_media":2947,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[109],"tags":[266],"class_list":["post-2945","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-faq","tag-pcb-surface-finishes"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is PCB Surface Finishes? - Topfastpcb<\/title>\n<meta name=\"description\" content=\"In-depth comparison of 7 PCB surface finish processes (HASL\/ENIG\/OSP\/Immersion Tin\/Immersion Silver\/ENEPIG\/Electrolytic Hard Gold), including their pros\/cons, selection criteria, and solutions to 5 common soldering failures.\" \/>\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-pcb-surface-finishes\/\" \/>\n<meta property=\"og:locale\" content=\"fi_FI\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is PCB Surface Finishes? - Topfastpcb\" \/>\n<meta property=\"og:description\" content=\"In-depth comparison of 7 PCB surface finish processes (HASL\/ENIG\/OSP\/Immersion Tin\/Immersion Silver\/ENEPIG\/Electrolytic Hard Gold), including their pros\/cons, selection criteria, and solutions to 5 common soldering failures.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.topfastpcb.com\/fi\/blog\/what-is-pcb-surface-finishes\/\" \/>\n<meta property=\"og:site_name\" content=\"Topfastpcb\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T00:32:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"402\" \/>\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=\"7 minuuttia\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/\"},\"author\":{\"name\":\"\u6258\u666e\u6cd5\u65af\u7279\",\"@id\":\"https:\/\/www.topfastpcb.com\/#\/schema\/person\/39870874f1c329f3cd3693593dbdce3a\"},\"headline\":\"What is PCB Surface Finishes?\",\"datePublished\":\"2025-06-01T00:32:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/\"},\"wordCount\":1180,\"publisher\":{\"@id\":\"https:\/\/www.topfastpcb.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes.jpg\",\"keywords\":[\"PCB Surface Finishes\"],\"articleSection\":[\"FAQ\"],\"inLanguage\":\"fi\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/\",\"url\":\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/\",\"name\":\"What is PCB Surface Finishes? - Topfastpcb\",\"isPartOf\":{\"@id\":\"https:\/\/www.topfastpcb.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes.jpg\",\"datePublished\":\"2025-06-01T00:32:00+00:00\",\"description\":\"In-depth comparison of 7 PCB surface finish processes (HASL\/ENIG\/OSP\/Immersion Tin\/Immersion Silver\/ENEPIG\/Electrolytic Hard Gold), including their pros\/cons, selection criteria, and solutions to 5 common soldering failures.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#breadcrumb\"},\"inLanguage\":\"fi\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fi\",\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#primaryimage\",\"url\":\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes.jpg\",\"contentUrl\":\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes.jpg\",\"width\":600,\"height\":402,\"caption\":\"PCB Surface Finishes\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.topfastpcb.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"What is PCB Surface Finishes?\"}]},{\"@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\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"What is PCB Surface Finishes? - Topfastpcb","description":"In-depth comparison of 7 PCB surface finish processes (HASL\/ENIG\/OSP\/Immersion Tin\/Immersion Silver\/ENEPIG\/Electrolytic Hard Gold), including their pros\/cons, selection criteria, and solutions to 5 common soldering failures.","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\/what-is-pcb-surface-finishes\/","og_locale":"fi_FI","og_type":"article","og_title":"What is PCB Surface Finishes? - Topfastpcb","og_description":"In-depth comparison of 7 PCB surface finish processes (HASL\/ENIG\/OSP\/Immersion Tin\/Immersion Silver\/ENEPIG\/Electrolytic Hard Gold), including their pros\/cons, selection criteria, and solutions to 5 common soldering failures.","og_url":"https:\/\/www.topfastpcb.com\/fi\/blog\/what-is-pcb-surface-finishes\/","og_site_name":"Topfastpcb","article_published_time":"2025-06-01T00:32:00+00:00","og_image":[{"width":600,"height":402,"url":"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes.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":"7 minuuttia"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#article","isPartOf":{"@id":"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/"},"author":{"name":"\u6258\u666e\u6cd5\u65af\u7279","@id":"https:\/\/www.topfastpcb.com\/#\/schema\/person\/39870874f1c329f3cd3693593dbdce3a"},"headline":"What is PCB Surface Finishes?","datePublished":"2025-06-01T00:32:00+00:00","mainEntityOfPage":{"@id":"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/"},"wordCount":1180,"publisher":{"@id":"https:\/\/www.topfastpcb.com\/#organization"},"image":{"@id":"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#primaryimage"},"thumbnailUrl":"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes.jpg","keywords":["PCB Surface Finishes"],"articleSection":["FAQ"],"inLanguage":"fi"},{"@type":"WebPage","@id":"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/","url":"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/","name":"What is PCB Surface Finishes? - Topfastpcb","isPartOf":{"@id":"https:\/\/www.topfastpcb.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#primaryimage"},"image":{"@id":"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#primaryimage"},"thumbnailUrl":"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes.jpg","datePublished":"2025-06-01T00:32:00+00:00","description":"In-depth comparison of 7 PCB surface finish processes (HASL\/ENIG\/OSP\/Immersion Tin\/Immersion Silver\/ENEPIG\/Electrolytic Hard Gold), including their pros\/cons, selection criteria, and solutions to 5 common soldering failures.","breadcrumb":{"@id":"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#breadcrumb"},"inLanguage":"fi","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/"]}]},{"@type":"ImageObject","inLanguage":"fi","@id":"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#primaryimage","url":"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes.jpg","contentUrl":"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/05\/PCB-Surface-Finishes.jpg","width":600,"height":402,"caption":"PCB Surface Finishes"},{"@type":"BreadcrumbList","@id":"https:\/\/www.topfastpcb.com\/blog\/what-is-pcb-surface-finishes\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.topfastpcb.com\/"},{"@type":"ListItem","position":2,"name":"What is PCB Surface Finishes?"}]},{"@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\/"}]}},"_links":{"self":[{"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/posts\/2945","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=2945"}],"version-history":[{"count":3,"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/posts\/2945\/revisions"}],"predecessor-version":[{"id":2953,"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/posts\/2945\/revisions\/2953"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/media\/2947"}],"wp:attachment":[{"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/media?parent=2945"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/categories?post=2945"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.topfastpcb.com\/fi\/wp-json\/wp\/v2\/tags?post=2945"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}