{"id":6260,"date":"2026-09-22T08:00:00","date_gmt":"2026-09-22T00:00:00","guid":{"rendered":"https:\/\/www.topfastpcb.com\/?p=6260"},"modified":"2026-08-05T19:08:28","modified_gmt":"2026-08-05T11:08:28","slug":"hard-gold-plating-pcb","status":"publish","type":"post","link":"https:\/\/www.topfastpcb.com\/tr\/blog\/hard-gold-plating-pcb\/","title":{"rendered":"Sert Alt\u0131n Kaplama: A\u015f\u0131r\u0131 A\u015f\u0131nma Direnci i\u00e7in Kenar Konekt\u00f6rleri ve Anahtar Kontaklar\u0131 Tasar\u0131m\u0131"},"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\">\u0130\u00e7indekiler<\/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\/tr\/blog\/hard-gold-plating-pcb\/#Introduction_to_Hard_Gold_Plating_in_PCB_Design\" >PCB Tasar\u0131m\u0131nda Sert Alt\u0131n Kaplamaya Giri\u015f<\/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\/tr\/blog\/hard-gold-plating-pcb\/#The_Metallurgy_and_Material_Properties_of_Hard_Gold\" >Sert Alt\u0131n\u0131n Metalurjisi ve Malzeme \u00d6zellikleri<\/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\/tr\/blog\/hard-gold-plating-pcb\/#The_Critical_Role_of_the_Nickel_Underplate\" >Nikel Alt Kaplaman\u0131n Kritik Rol\u00fc<\/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\/tr\/blog\/hard-gold-plating-pcb\/#Engineering_Edge_Connectors_Gold_Fingers\" >M\u00fchendislik Kenar Konekt\u00f6rleri (Alt\u0131n Parmaklar)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.topfastpcb.com\/tr\/blog\/hard-gold-plating-pcb\/#Plating_Thickness_Specifications\" >Kaplama Kal\u0131nl\u0131\u011f\u0131 Teknik \u00d6zellikleri<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.topfastpcb.com\/tr\/blog\/hard-gold-plating-pcb\/#Current_Carrying_Capacity_and_Contact_Resistance\" >Ak\u0131m Ta\u015f\u0131ma Kapasitesi ve Temas Direnci<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.topfastpcb.com\/tr\/blog\/hard-gold-plating-pcb\/#Engineering_Switch_Contacts_for_Extreme_Wear\" >A\u015f\u0131r\u0131 A\u015f\u0131nmaya Dayan\u0131kl\u0131 M\u00fchendislik Anahtar Kontaklar\u0131<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.topfastpcb.com\/tr\/blog\/hard-gold-plating-pcb\/#Dome_Switch_Contacts\" >Kubbe Anahtar\u0131 Kontaklar\u0131<\/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\/tr\/blog\/hard-gold-plating-pcb\/#Rotary_and_Sliding_Contacts\" >D\u00f6ner ve Kayar Kontaklar<\/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\/tr\/blog\/hard-gold-plating-pcb\/#How_to_Implement_Hard_Gold_Plating_Step-by-Step_Guide\" >Sert Alt\u0131n Kaplama Nas\u0131l Yap\u0131l\u0131r (Ad\u0131m Ad\u0131m K\u0131lavuz)<\/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\/tr\/blog\/hard-gold-plating-pcb\/#Mitigation_of_Contamination_and_Failure_Analysis\" >Kirlenmenin Azalt\u0131lmas\u0131 ve Ar\u0131za Analizi<\/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\/tr\/blog\/hard-gold-plating-pcb\/#Frequently_Asked_Questions_FAQ\" >S\u0131k\u00e7a Sorulan Sorular (SSS)<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Introduction_to_Hard_Gold_Plating_in_PCB_Design\"><\/span>PCB Tasar\u0131m\u0131nda Sert Alt\u0131n Kaplamaya Giri\u015f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Y\u00fcksek g\u00fcvenilirlik gerektiren uygulamalar i\u00e7in bask\u0131l\u0131 devre kartlar\u0131 (PCB\u2019ler) tasarlan\u0131rken, y\u00fczey kaplamas\u0131n\u0131n se\u00e7imi bir m\u00fchendisin almas\u0131 gereken en kritik kararlardan biridir. Elektrolizsiz Nikel Dald\u0131rma Alt\u0131n (ENIG) kaplamas\u0131, y\u00fczeye monte bile\u015fenlerin lehimlenmesi i\u00e7in m\u00fckemmel bir e\u015fd\u00fczlemli y\u00fczey sa\u011flasa da, kaymal\u0131 temas uygulamalar\u0131 i\u00e7in temelde uygun de\u011fildir. Tekrarlanan mekanik s\u00fcrt\u00fcnmeye dayanmas\u0131 gereken kenar konekt\u00f6rleri (genel olarak alt\u0131n parmaklar olarak bilinir), d\u00f6ner anahtarlar, kayma halkalar\u0131 ve membran anahtar kontaklar\u0131 i\u00e7in sert alt\u0131n kaplama, tart\u0131\u015fmas\u0131z end\u00fcstri standard\u0131d\u0131r.<\/p>\n<p>Sert alt\u0131n, yumu\u015fak ve saf alt\u0131n muadili aksine, binlerce \u2014 hatta on binlerce \u2014 takma ve silme d\u00f6ng\u00fcs\u00fc boyunca a\u015f\u0131nd\u0131r\u0131c\u0131 y\u0131pranmaya, s\u00fcrt\u00fcnme a\u015f\u0131nmas\u0131na ve \u00e7evresel bozulmaya direnmek \u00fczere \u00f6zel olarak tasarlanm\u0131\u015f bir elektrokaplama ala\u015f\u0131m\u0131d\u0131r. Alt\u0131n\u0131n kobalt, nikel veya demir gibi bir sertle\u015ftirici madde ile birlikte kaplanmas\u0131yla elde edilen metalurjik yap\u0131, alt\u0131n\u0131 ideal bir temas malzemesi yapan \u00fcst\u00fcn elektrik iletkenli\u011fini ve oksidasyon direncini korurken ola\u011fan\u00fcst\u00fc bir dayan\u0131kl\u0131l\u0131k sa\u011flar.<\/p>\n<p>Bu makale, sert alt\u0131n kaplaman\u0131n teknik \u00f6zelliklerini incelemekte, kenar konekt\u00f6rleri ve anahtar kontaklar\u0131 i\u00e7in kritik tasar\u0131m k\u0131s\u0131tlamalar\u0131n\u0131 ortaya koymakta ve son derece g\u00fcvenilir, a\u015f\u0131nmaya dayan\u0131kl\u0131 kayan aray\u00fczlerin tasar\u0131m\u0131 i\u00e7in titiz bir metodoloji sunmaktad\u0131r.<\/p>\n<div style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/PCB-Hard-Gold-Plating-1.jpg\" alt=\"PCB Sert Alt\u0131n Kaplama\" width=\"600\" height=\"385\" class=\"aligncenter size-full wp-image-6439\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/PCB-Hard-Gold-Plating-1.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/PCB-Hard-Gold-Plating-1-300x193.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/PCB-Hard-Gold-Plating-1-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/div>\n<h2><span class=\"ez-toc-section\" id=\"The_Metallurgy_and_Material_Properties_of_Hard_Gold\"><\/span>Sert Alt\u0131n\u0131n Metalurjisi ve Malzeme \u00d6zellikleri<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Y\u00fcksek a\u015f\u0131nma gerektiren uygulamalarda sert alt\u0131n\u0131n neden gerekli oldu\u011funu anlamak i\u00e7in, metalurjik \u00f6zelliklerini incelemek gerekir. Saf alt\u0131n (genellikle yumu\u015fak alt\u0131n olarak adland\u0131r\u0131l\u0131r) son derece s\u00fcnek olup, Knoop sertli\u011fi yakla\u015f\u0131k 60-90 HK25'tir. Kayma hareketine maruz kald\u0131\u011f\u0131nda yumu\u015fak alt\u0131n, a\u015f\u0131n\u0131r, bula\u015f\u0131r ve h\u0131zla altta yatan ana metale kadar a\u015f\u0131narak, bu metali oksidasyona ve galvanik korozyona maruz b\u0131rak\u0131r.<\/p>\n<p>Sert alt\u0131n, genellikle ,7% alt\u0131n ve %0,3% kobalt veya nikelden olu\u015fan bir ala\u015f\u0131m olarak form\u00fcle edilir. Sertle\u015ftirici bir elementin bu \u00e7ok az miktarda eklenmesi, birikintinin mikrokristal yap\u0131s\u0131n\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde de\u011fi\u015ftirir. Ortaya \u00e7\u0131kan ala\u015f\u0131m, 130 ile 200 HK25 aras\u0131nda de\u011fi\u015fen bir Knoop sertli\u011fi sergiler ve bu da a\u015f\u0131nd\u0131r\u0131c\u0131 ve yap\u0131\u015fkan a\u015f\u0131nmaya kar\u015f\u0131 direncini \u00f6nemli \u00f6l\u00e7\u00fcde art\u0131r\u0131r. <strong>Hakk\u0131nda daha fazla bilgi edinin <a href=\"\/tr\/blog\/m-sap-technology-pcb\/\">M-SAP Teknolojisi: Yeni Nesil Elektronik \u00dcr\u00fcnler i\u00e7in 25 Mikron Alt\u0131nda Hat\/Bo\u015fluk Mesafesi Sa\u011flanmas\u0131<\/a>.<\/strong><\/p>\n<p>Ancak, bu sertlik art\u0131\u015f\u0131 baz\u0131 dezavantajlar\u0131 da beraberinde getirir. Kobalt veya nikel ilavesi, saf alt\u0131na k\u0131yasla kaplaman\u0131n elektriksel direncini hafif\u00e7e art\u0131r\u0131r; ancak bu de\u011fer, \u00e7o\u011fu d\u00fc\u015f\u00fck voltajl\u0131 ve d\u00fc\u015f\u00fck ak\u0131ml\u0131 sinyal uygulamalar\u0131 i\u00e7in kabul edilebilir s\u0131n\u0131rlar i\u00e7inde kal\u0131r. Daha da \u00f6nemlisi, sert alt\u0131n genellikle tel ba\u011flama veya a\u011f\u0131r lehimleme uygulamalar\u0131 i\u00e7in tavsiye edilmez. Sertle\u015ftirici elementler, s\u0131cakl\u0131k dalgalanmalar\u0131 s\u0131ras\u0131nda yer de\u011fi\u015ftirebilir ve bu da lehim ba\u011flant\u0131s\u0131n\u0131n k\u0131r\u0131lganla\u015fmas\u0131na yol a\u00e7abilir (kal\u0131nl\u0131k belirli e\u015fik de\u011ferleri a\u015farsa, bu durum \u201csiyah ped\u201d veya \u201calt\u0131n k\u0131r\u0131lganla\u015fmas\u0131\u201d olarak bilinir). Bu nedenle, sert alt\u0131n yaln\u0131zca a\u015f\u0131nma direnci gerektiren alanlara se\u00e7ici olarak kaplan\u0131r.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"The_Critical_Role_of_the_Nickel_Underplate\"><\/span>Nikel Alt Kaplaman\u0131n Kritik Rol\u00fc<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Sert alt\u0131n kaplama, asla \u00e7\u0131plak bak\u0131r\u0131n \u00fczerine do\u011frudan uygulanmaz. Sa\u011flam bir elektrolitik nikel alt kaplama zorunludur. Genellikle 100 ila 200 mikroin\u00e7 (2,54 ila 5,08 mikrometre) aras\u0131nda belirtilen bu nikel tabakas\u0131, \u00fc\u00e7 farkl\u0131 ve kritik m\u00fchendislik i\u015flevini yerine getirir:<br \/>1. <strong>Dif\u00fczyon Bariyeri:<\/strong> Y\u00fcksek s\u0131cakl\u0131klarda veya uzun s\u00fcreler boyunca bak\u0131r atomlar\u0131 alt\u0131n tabakas\u0131na ge\u00e7erek y\u00fczeye ula\u015fabilir ve burada oksitlenebilir; bu da temas direncinin bozulmas\u0131na neden olur. Nikel tabakas\u0131, bak\u0131r\u0131n yay\u0131lmas\u0131na kar\u015f\u0131 a\u015f\u0131lmaz bir bariyer g\u00f6revi g\u00f6r\u00fcr.<br \/>2. <strong>Y\u00fck Ta\u015f\u0131y\u0131c\u0131 Temel:<\/strong> Sert alt\u0131n tabakas\u0131 nispeten incedir. Yumu\u015fak bak\u0131r\u0131n \u00fczerine do\u011frudan yerle\u015ftirildi\u011finde, e\u015fle\u015fen konekt\u00f6r piminin uygulad\u0131\u011f\u0131 yerel bas\u0131n\u00e7, bak\u0131r\u0131n esnemesine ve sert alt\u0131n tabakas\u0131n\u0131n \u00e7atlamas\u0131na neden olabilir (\u201c\u00e7amur \u00fczerindeki ince buz\u201d etkisi). Daha sert olan nikel, bas\u0131n\u00e7 y\u00fckleri alt\u0131nda alt\u0131n tabakas\u0131n\u0131 destekleyen rijit bir mekanik alt tabaka sa\u011flar.<br \/>3. <strong>G\u00f6zeneklerin Kapat\u0131lmas\u0131:<\/strong> Alt\u0131n tabakas\u0131n\u0131n alt\u0131nda s\u00fcrekli ve pasif bir tabaka olu\u015fturarak nikel, \u00e7evresel korozif maddelerin alt\u0131n tabakas\u0131ndaki mikroskobik g\u00f6zeneklerden bak\u0131ra ula\u015fmas\u0131n\u0131 engeller.<\/p>\n<div style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/PCB-Hard-Gold-Plating-2.jpg\" alt=\"PCB Sert Alt\u0131n Kaplama\" width=\"600\" height=\"396\" class=\"aligncenter size-full wp-image-6440\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/PCB-Hard-Gold-Plating-2.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/PCB-Hard-Gold-Plating-2-300x198.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/PCB-Hard-Gold-Plating-2-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Engineering_Edge_Connectors_Gold_Fingers\"><\/span>M\u00fchendislik Kenar Konekt\u00f6rleri (Alt\u0131n Parmaklar)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Kenar konekt\u00f6rleri, bask\u0131l\u0131 devre kartlar\u0131nda (PCB) sert alt\u0131n kaplaman\u0131n en yayg\u0131n uygulama alan\u0131d\u0131r. Bellek mod\u00fcllerinde (RAM), PCI\/PCIe geni\u015fletme kartlar\u0131nda ve end\u00fcstriyel tak\u0131labilir mod\u00fcllerde kullan\u0131lan bu konekt\u00f6rler, yayl\u0131 e\u015fle\u015fme pimlerine kar\u015f\u0131 tekrarlanan takma ve \u00e7\u0131karma kuvvetlerine dayanabilmelidir.<\/p>\n<p>Kenar konekt\u00f6rleri tasarlan\u0131rken, \u00f6nlenmesi gereken ba\u015fl\u0131ca ar\u0131za mekanizmalar\u0131 a\u015f\u0131nd\u0131r\u0131c\u0131 a\u015f\u0131nma (s\u00fcrt\u00fcnme nedeniyle kaplama kal\u0131nl\u0131\u011f\u0131n\u0131n azalmas\u0131) ve yap\u0131\u015fkan a\u015f\u0131nmad\u0131r (galling). Tasar\u0131mda ayr\u0131ca, e\u015fle\u015fen yuvan\u0131n mekanik toleranslar\u0131 ve aray\u00fczden ge\u00e7en sinyallerin elektriksel gereksinimleri de dikkate al\u0131nmal\u0131d\u0131r.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Plating_Thickness_Specifications\"><\/span>Kaplama Kal\u0131nl\u0131\u011f\u0131 Teknik \u00d6zellikleri<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Sert alt\u0131n tabakas\u0131n\u0131n gerekli kal\u0131nl\u0131\u011f\u0131, \u00fcr\u00fcn\u00fcn \u00f6ng\u00f6r\u00fclen kullan\u0131m \u00f6mr\u00fc (birle\u015ftirme d\u00f6ng\u00fcs\u00fc say\u0131s\u0131) ile do\u011fru orant\u0131l\u0131d\u0131r. IPC-4526 standard\u0131, bu teknik \u00f6zellikler konusunda k\u0131lavuz niteli\u011finde bilgiler sunar. Yayg\u0131n kal\u0131nl\u0131k aral\u0131klar\u0131 \u015funlard\u0131r:<br \/>&#8211; <strong>3-5 mikroin\u00e7 (Flash Gold):<\/strong> Yaln\u0131zca \u00e7ok d\u00fc\u015f\u00fck kullan\u0131m d\u00f6ng\u00fcs\u00fcne sahip uygulamalar i\u00e7in uygundur (50'den az takma i\u015flemi); esas olarak ger\u00e7ek bir a\u015f\u0131nma y\u00fczeyi olmaktan ziyade ge\u00e7ici bir \u00e7evresel koruma maddesi olarak kullan\u0131l\u0131r.<br \/>&#8211; <strong>10-15 mikroin\u00e7:<\/strong> Standart ticari s\u0131n\u0131f, 500 ba\u011flant\u0131 d\u00f6ng\u00fcs\u00fcne kadar dayan\u0131kl\u0131d\u0131r. \u0130lk montajdan sonra par\u00e7alar\u0131n nadiren de\u011fi\u015ftirildi\u011fi t\u00fcketici elektroni\u011fi \u00fcr\u00fcnlerinde yayg\u0131n olarak kullan\u0131l\u0131r.<br \/>&#8211; <strong>30 mikroin\u00e7 (S\u0131n\u0131f 2\/3):<\/strong> End\u00fcstri, telekom ve kurumsal donan\u0131mlar i\u00e7in standart. 1000'den fazla takma d\u00f6ng\u00fcs\u00fcne dayanabilir. Bu, y\u00fcksek g\u00fcvenilirli\u011fe sahip t\u00fcm kenar konekt\u00f6rleri i\u00e7in temel \u00f6neridir.<br \/>&#8211; <strong>50+ mikroin\u00e7 (Mil-Spec \/ Havac\u0131l\u0131k ve Uzay):<\/strong> A\u015f\u0131r\u0131 ortamlar, yo\u011fun s\u00fcrt\u00fcnmeli temaslar ve \u015fiddetli titre\u015fim ile s\u00fcrt\u00fcnme a\u015f\u0131nmas\u0131na maruz kalan, hayati \u00f6neme sahip uygulamalar i\u00e7in tasarlanm\u0131\u015ft\u0131r.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Current_Carrying_Capacity_and_Contact_Resistance\"><\/span>Ak\u0131m Ta\u015f\u0131ma Kapasitesi ve Temas Direnci<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Kenar konekt\u00f6rleri, genellikle milyom aral\u0131\u011f\u0131nda olmak \u00fczere d\u00fc\u015f\u00fck ve sabit bir temas direnci sa\u011flamal\u0131d\u0131r. Alt\u0131n tabaka a\u015f\u0131nd\u0131k\u00e7a veya e\u015fle\u015fme aray\u00fcz\u00fcnde kal\u0131nt\u0131lar birikirse, temas direnci artar ve bu da b\u00f6lgesel I2R \u0131s\u0131nmas\u0131na yol a\u00e7ar. Alt\u0131n parmaklar \u00fczerinden g\u00fc\u00e7 y\u00f6nlendirilirken, pedlerin alt\u0131ndaki cam elyaf\u0131 alt tabakan\u0131n (FR4) termal bozulmas\u0131n\u0131 \u00f6nlemek i\u00e7in ak\u0131m\u0131 birbiri yan\u0131ndaki birden fazla parma\u011fa da\u011f\u0131tmak \u00e7ok \u00f6nemlidir.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Engineering_Switch_Contacts_for_Extreme_Wear\"><\/span>A\u015f\u0131r\u0131 A\u015f\u0131nmaya Dayan\u0131kl\u0131 M\u00fchendislik Anahtar Kontaklar\u0131<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Kenar konekt\u00f6rlerinin yan\u0131 s\u0131ra, sert alt\u0131n, PCB d\u00fczeyindeki anahtar mekanizmalar\u0131nda da yayg\u0131n olarak kullan\u0131lmaktad\u0131r. Bunlar aras\u0131nda metal bask\u0131l\u0131 kubbeli membran anahtarlar, d\u00f6ner kodlay\u0131c\u0131lar, kayar potansiyometreler ve elastomerik karbon hapl\u0131 tu\u015f tak\u0131mlar\u0131 yer almaktad\u0131r.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Dome_Switch_Contacts\"><\/span>Kubbe Anahtar\u0131 Kontaklar\u0131<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Bir kubbe anahtar dizisinde, paslanmaz \u00e7elik bir kubbe \u00e7\u00f6kerek PCB \u00fczerindeki iki e\u015fmerkezli sert alt\u0131n kaplamal\u0131 izi birbirine ba\u011flar. Buradaki ar\u0131za mekanizmas\u0131 genellikle yanal a\u015f\u0131nma de\u011fil, kubbenin ayaklar\u0131n\u0131n a\u015fa\u011f\u0131 do\u011fru esnerken yaratt\u0131\u011f\u0131 mikroskobik s\u00fcrt\u00fcnme hareketinin neden oldu\u011fu s\u0131k\u0131\u015ft\u0131rmal\u0131 s\u00fcrt\u00fcnme a\u015f\u0131nmas\u0131d\u0131r. Bu kontaklar\u0131n \u00f6mr\u00fcn\u00fc en \u00fcst d\u00fczeye \u00e7\u0131karmak i\u00e7in, sert alt\u0131n kaplaman\u0131n tamamen p\u00fcr\u00fczs\u00fcz ve yumrulardan ar\u0131nd\u0131r\u0131lm\u0131\u015f olmas\u0131 gerekir. Yollar, mekanik y\u00fck\u00fc da\u011f\u0131tarak kubbe ayaklar\u0131yla temas alan\u0131n\u0131 en \u00fcst d\u00fczeye \u00e7\u0131karacak \u015fekilde tasarlanmal\u0131d\u0131r.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Rotary_and_Sliding_Contacts\"><\/span>D\u00f6ner ve Kayar Kontaklar<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>D\u00f6ner anahtarlar ve kayma halkalar\u0131 i\u00e7in silme hareketi s\u00fcrekli ve \u015fiddetlidir. E\u015fle\u015fen silici (genellikle berilyum-bak\u0131r ala\u015f\u0131m\u0131), y\u00fczeydeki film tabakalar\u0131n\u0131 veya tozu k\u0131rmak i\u00e7in y\u00fcksek bir normal kuvvet uygular. Bu tasar\u0131mlarda, sert alt\u0131n kaplama kal\u0131nl\u0131\u011f\u0131 en \u00fcst d\u00fczeye \u00e7\u0131kar\u0131lmal\u0131d\u0131r (genellikle 50 mikroin\u00e7 veya daha fazla). Ayr\u0131ca, y\u00fczey topografyas\u0131 da kritik \u00f6neme sahiptir. S\u00fcrt\u00fcc\u00fcn\u00fcn iz kenarlar\u0131na \u201c\u00e7arpmamas\u0131\u201d i\u00e7in izler m\u00fcmk\u00fcn oldu\u011funca silme y\u00f6n\u00fcne paralel olarak y\u00f6nlendirilmelidir; aksi takdirde a\u015f\u0131nma h\u0131zlan\u0131r ve iletken kal\u0131nt\u0131lar olu\u015fur. S\u00fcrt\u00fcnme katsay\u0131s\u0131n\u0131 azaltmak ve \u00e7al\u0131\u015fma \u00f6mr\u00fcn\u00fc uzatmak amac\u0131yla bazen sert alt\u0131n kaplama ile birlikte ya\u011flay\u0131c\u0131lar da kullan\u0131l\u0131r.<\/p>\n<h2><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/PCB-Hard-Gold-Plating.jpg\" alt=\"PCB Sert Alt\u0131n Kaplama\" width=\"600\" height=\"391\" class=\"aligncenter size-full wp-image-6438\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/PCB-Hard-Gold-Plating.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/PCB-Hard-Gold-Plating-300x196.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2026\/08\/PCB-Hard-Gold-Plating-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/h2>\n<h2><span class=\"ez-toc-section\" id=\"How_to_Implement_Hard_Gold_Plating_Step-by-Step_Guide\"><\/span>Sert Alt\u0131n Kaplama Nas\u0131l Yap\u0131l\u0131r (Ad\u0131m Ad\u0131m K\u0131lavuz)<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\">A\u015fa\u011f\u0131daki m\u00fchendislik kurallar\u0131na uyun. <strong>Hakk\u0131nda daha fazla bilgi edinin <a href=\"\/tr\/blog\/precision-impedance-control-pcb\/\">Hassas Empedans Kontrol\u00fc: Y\u00fcksek H\u0131zl\u0131 PCB\u2019lerde \u00b15% Empedans Tolerans\u0131n\u0131n Nas\u0131l Sa\u011flanaca\u011f\u0131<\/a>.<\/strong><\/p> <ol class=\"schema-how-to-steps\"><li class=\"schema-how-to-step\" id=\"how-to-step-1\"><strong class=\"schema-how-to-step-name\">A\u015f\u0131nma Gereksinimlerini ve Kaplama Kal\u0131nl\u0131\u011f\u0131n\u0131 Belirleyin<\/strong> <p class=\"schema-how-to-step-text\">\u00d6ncelikle, \u00fcr\u00fcn\u00fcn\u00fcz\u00fcn operasyonel ya\u015fam d\u00f6ng\u00fcs\u00fcn\u00fc a\u00e7\u0131k\u00e7a tan\u0131mlay\u0131n. Kart\u0131n dayanabilece\u011fi maksimum ba\u011flant\u0131 d\u00f6ng\u00fcs\u00fc say\u0131s\u0131n\u0131 veya anahtar \u00e7al\u0131\u015ft\u0131rma say\u0131s\u0131n\u0131 hesaplay\u0131n. Gerekli alt\u0131n kal\u0131nl\u0131\u011f\u0131n\u0131 belirlemek i\u00e7in IPC standartlar\u0131na ba\u015fvurun. Standart bir PCIe kart\u0131 i\u00e7in 30 mikroin\u00e7 (0,76 \u00b5m) sert alt\u0131n belirtin. Bu gereksinimi \u00fcretim \u00e7iziminizde ve delme\/\u00fcretim notlar\u0131n\u0131zda a\u00e7\u0131k bir \u015fekilde belgelendirin; \u00f6rne\u011fin, \u201cKenar konekt\u00f6rleri sert alt\u0131n (99,7% Au, 0,3% Co) ile kaplanacak, minimum kal\u0131nl\u0131k 30 mikroin\u00e7.\u201d<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-2\"><strong class=\"schema-how-to-step-name\">Nikel Alt Plakay\u0131 Belirtin<\/strong> <p class=\"schema-how-to-step-text\">Nikel spesifikasyonunu asla atlamay\u0131n. \u00dcretim notlar\u0131n\u0131zda sa\u011flam bir elektrolitik nikel bariyerinin belirtildi\u011finden emin olun. Standart a\u00e7\u0131klama \u015fu \u015fekilde olmal\u0131d\u0131r: \u201cT\u00fcm sert alt\u0131n y\u00fczeylerin alt\u0131na uygulanacak elektrolitik nikel alt tabakas\u0131, minimum kal\u0131nl\u0131k 150 mikroin\u00e7 (3,81 \u00b5m).\u201d Bu, gerekli mekanik deste\u011fi garanti eder ve bak\u0131r g\u00f6\u00e7\u00fcn\u00fc \u00f6nler.<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-3\"><strong class=\"schema-how-to-step-name\">Elektrokaplama i\u00e7in Gergi \u00c7ubuklar\u0131<\/strong> <p class=\"schema-how-to-step-text\">Sert alt\u0131n elektrokaplama yoluyla uyguland\u0131\u011f\u0131 i\u00e7in, kaplama yap\u0131lacak her bir pedin \u00fcretim s\u00fcrecinde ortak bir katot baras\u0131na elektriksel olarak ba\u011flanmas\u0131 gerekir. Bir PCB tasar\u0131mc\u0131s\u0131 olarak, her alt\u0131n parma\u011f\u0131n alt kenar\u0131ndan kart\u0131n d\u0131\u015f hatlar\u0131na do\u011fru k\u00fc\u00e7\u00fck iz uzant\u0131lar\u0131 (ba\u011flant\u0131 \u00e7ubuklar\u0131) y\u00f6nlendirmelisiniz. \u00dcretim s\u0131ras\u0131nda bu ba\u011flant\u0131 \u00e7ubuklar\u0131, panel kenarlar\u0131nda bulunan ge\u00e7ici bir kaplama baras\u0131na ba\u011flan\u0131r. Kaplama i\u015flemi tamamland\u0131ktan sonra, kart \u00fczerinde kesim veya V-\u00e7entik i\u015flemi yap\u0131l\u0131r; bu i\u015flemle ba\u011flant\u0131 \u00e7ubuklar\u0131 fiziksel olarak kesilir ve parmaklar elektriksel olarak izole edilir. Tasar\u0131m kurallar\u0131n\u0131z\u0131n bu izlerin kart kenar\u0131n\u0131 ge\u00e7mesine izin verdi\u011finden emin olun.<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-4\"><strong class=\"schema-how-to-step-name\">Kenar Konekt\u00f6rlerinde Pah Yapmay\u0131 Dahil Edin<\/strong> <p class=\"schema-how-to-step-text\">PCB\u2019nin keskin \u00f6n kenar\u0131n\u0131n, takma i\u015flemi s\u0131ras\u0131nda e\u015fle\u015fen konekt\u00f6r pimlerine \u00e7arparak hasar vermesini \u00f6nlemek i\u00e7in, kart kenar\u0131 e\u011fimli (hav\u015fal\u0131) hale getirilmelidir. \u00dcretim \u00e7iziminizde, pah\u0131n a\u00e7\u0131s\u0131n\u0131 ve derinli\u011fini belirtin. End\u00fcstri standard\u0131 genellikle 20 derece ile 45 derece aras\u0131nda bir pah a\u00e7\u0131s\u0131d\u0131r ve kart\u0131n i\u00e7ine belirli bir mesafe (\u00f6rne\u011fin, 0,020 in\u00e7) kadar kesilir. Hafif alt\u0131n kaplama i\u015fleminden *sonra* pah k\u0131rma i\u015fleminin ger\u00e7ekle\u015ftirilmesi gerekti\u011fini belirtin, ancak ortaya \u00e7\u0131kan \u00e7\u0131plak fiberglas kenar\u0131n i\u00e7 d\u00fczlemlerdeki bak\u0131r\u0131 a\u00e7\u0131\u011fa \u00e7\u0131karmad\u0131\u011f\u0131ndan emin olun.<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-5\"><strong class=\"schema-how-to-step-name\">Maskeleme Gereksinimlerini Belirleyin<\/strong> <p class=\"schema-how-to-step-text\">Sert alt\u0131n pahal\u0131d\u0131r ve yaln\u0131zca gerekli oldu\u011fu yerlere uygulanmal\u0131d\u0131r. \u00dcretici, istenmeyen alanlara alt\u0131n birikmesini \u00f6nlemek i\u00e7in kart\u0131n geri kalan k\u0131sm\u0131na koruyucu kaplama band\u0131 veya \u00f6zel bir fotorezist uygulamal\u0131d\u0131r. Gerber veya ODB++ dosyalar\u0131n\u0131zda, \u00f6zel bir dok\u00fcmantasyon katman\u0131nda sert alt\u0131n alan\u0131n\u0131n s\u0131n\u0131rlar\u0131n\u0131 a\u00e7\u0131k\u00e7a belirtin. Lehim maskesi katman\u0131n\u0131n, kaplama band\u0131n\u0131n \u00e7\u0131plak FR4'e s\u0131k\u0131ca yap\u0131\u015fmas\u0131n\u0131 sa\u011flayacak ve kaplama s\u0131zmas\u0131n\u0131 \u00f6nleyecek \u015fekilde alt\u0131n parmaklardan yeterince geriye \u00e7ekildi\u011finden emin olun.<\/p> <\/li><\/ol><\/div><p>Sert alt\u0131n kaplaman\u0131n do\u011fru bir \u015fekilde uygulanmas\u0131, PCB tasar\u0131mc\u0131s\u0131 ile \u00fcretim firmas\u0131 aras\u0131nda dikkatli bir i\u015fbirli\u011fini gerektirir. Sert alt\u0131n kaplama elektrolitik bir i\u015flem oldu\u011fundan, \u00fcretim s\u0131ras\u0131nda t\u00fcm hedef pedlere s\u00fcrekli bir elektrik ba\u011flant\u0131s\u0131 sa\u011flanmas\u0131 gerekir. Tasar\u0131m\u0131n\u0131za ba\u015far\u0131l\u0131 bir \u015fekilde entegre edilmesini sa\u011flamak i\u00e7in a\u015fa\u011f\u0131daki ad\u0131mlar\u0131 titizlikle uygulay\u0131n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Mitigation_of_Contamination_and_Failure_Analysis\"><\/span>Kirlenmenin Azalt\u0131lmas\u0131 ve Ar\u0131za Analizi<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>M\u00fckemmel tasarlanm\u0131\u015f sert alt\u0131n kontaklar bile, do\u011fru \u015fekilde \u00fcretilmez ve kullan\u0131lmazsa ar\u0131zalanabilir. Kaplama banyosundaki kirlenme, y\u00fcksek g\u00f6zeneklili\u011fe yol a\u00e7arak korozif gazlar\u0131n (k\u00fck\u00fcrt dioksit veya klor gibi) altta yatan nikel tabakas\u0131n\u0131 a\u015f\u0131nd\u0131rmas\u0131na neden olabilir; bu da alt\u0131n y\u00fczeyine yay\u0131lan iletken olmayan korozyon \u00fcr\u00fcnlerinin olu\u015fmas\u0131na yol a\u00e7ar. <strong>Hakk\u0131nda daha fazla bilgi edinin <a href=\"\/tr\/blog\/flying-probe-vs-ict-pcba\/\">U\u00e7an Prob ve ICT: \u00dcretim Hacminize Uygun Do\u011fru PCBA Test Stratejisini Se\u00e7mek<\/a>.<\/strong><\/p>\n<p>Montaj s\u0131ras\u0131nda, ak\u0131 s\u0131\u00e7ramas\u0131n\u0131 \u00f6nlemek i\u00e7in son derece dikkatli olunmal\u0131d\u0131r, <a href=\"\/tr\/blog\/conformal-coating-pcba\/\">konformal kaplama<\/a>, ya da silikon gaz sal\u0131n\u0131m\u0131n\u0131n alt\u0131n y\u00fczeyleri kirletmesi. Basit bir parmak izi bile, d\u00fc\u015f\u00fck voltajl\u0131 bir anahtar\u0131n temas direncini \u00f6nemli \u00f6l\u00e7\u00fcde de\u011fi\u015ftirecek kadar organik ya\u011f ve tuz i\u00e7erir. Elle\u00e7leme kurallar\u0131, temiz oda eldivenlerinin ve \u00f6zel ESD ambalajlar\u0131n\u0131n kullan\u0131m\u0131n\u0131 zorunlu k\u0131lmal\u0131d\u0131r.<\/p>\n<p>Ar\u0131zalar meydana geldi\u011finde, bunlar genellikle Taramal\u0131 Elektron Mikroskobu (SEM) ile Enerji Da\u011f\u0131lmal\u0131 X-\u0131\u015f\u0131n\u0131 Spektroskopisi (EDS) birle\u015ftirilerek analiz edilir. Bu ara\u00e7lar, kaplama kal\u0131nl\u0131\u011f\u0131n\u0131 do\u011frulayabilir, nikel tabakas\u0131nda mikro \u00e7atlak olup olmad\u0131\u011f\u0131n\u0131 inceleyebilir ve temas direncini art\u0131rabilecek yabanc\u0131 kirletici maddeleri tespit edebilir.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions_FAQ\"><\/span>S\u0131k\u00e7a Sorulan Sorular (SSS)<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-1\"><strong class=\"schema-faq-question\">Bile\u015fenleri sert alt\u0131n kaplamaya do\u011frudan lehimleyebilir miyim?<\/strong> <p class=\"schema-faq-answer\">Sert alt\u0131n \u00fczerine lehimleme yapmak teknik olarak m\u00fcmk\u00fcn olsa da, bu y\u00f6ntem kesinlikle \u00f6nerilmez. Sert alt\u0131ndaki kobalt veya nikel ala\u015f\u0131m bile\u015fenleri, lehimle g\u00fcvenilir bir metal aras\u0131 ba\u011f olu\u015fumunu engeller. Ayr\u0131ca, sert alt\u0131n\u0131n kal\u0131nl\u0131\u011f\u0131 (genellikle 30+ mikroin\u00e7) lehim ba\u011flant\u0131s\u0131nda alt\u0131n\u0131n k\u0131r\u0131lganla\u015fmas\u0131na yol a\u00e7arak, gerilim veya termal d\u00f6ng\u00fc alt\u0131nda erken mekanik ar\u0131zalara neden olabilir. Lehimleme i\u00e7in ENIG veya HASL kullan\u0131n ve sert alt\u0131n\u0131 kesinlikle kayan temas alanlar\u0131yla s\u0131n\u0131rlay\u0131n.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-2\"><strong class=\"schema-faq-question\">ENIG ile Sert Alt\u0131n aras\u0131ndaki fark nedir?<\/strong> <p class=\"schema-faq-answer\">ENIG (Elektrolizsiz Nikel Dald\u0131rma Alt\u0131n), nikel \u00fczerine \u00e7ok ince bir tabaka (genellikle 1-2 mikroin\u00e7) saf, yumu\u015fak alt\u0131n olu\u015fturan bir kimyasal biriktirme i\u015flemidir. Bu i\u015flem, \u00f6ncelikle devre kart\u0131 lehimlenene kadar nikelin oksidasyona kar\u015f\u0131 korunmas\u0131 amac\u0131yla tasarlanm\u0131\u015ft\u0131r. Sert Alt\u0131n, tekrarlanan mekanik a\u015f\u0131nma ve s\u00fcrt\u00fcnmeye dayanmak \u00fczere \u00f6zel olarak tasarlanm\u0131\u015f, alt\u0131n ile kobalt\/nikel ala\u015f\u0131m\u0131ndan olu\u015fan \u00e7ok daha kal\u0131n ve sert bir tabaka biriktiren elektrolitik bir i\u015flemdir.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-3\"><strong class=\"schema-faq-question\">Pahl\u0131 kenarl\u0131 bir konekt\u00f6r\u00fcn yak\u0131n\u0131ndaki i\u00e7 bak\u0131r d\u00fczlemlerini nas\u0131l ele almal\u0131y\u0131m?<\/strong> <p class=\"schema-faq-answer\">Bir kenar konekt\u00f6r\u00fcnde bir pah (e\u011fim) belirtildi\u011finde, y\u00f6nlendirme ucu PCB alt tabakas\u0131n\u0131n \u00fcst ve alt kenarlar\u0131n\u0131 keser. \u0130\u00e7 bak\u0131r katmanlar bu pahl\u0131 b\u00f6lgeye uzan\u0131yorsa, bunlar a\u00e7\u0131\u011fa \u00e7\u0131kar ve e\u015fle\u015fen konekt\u00f6r\u00fcn pimlerine elektriksel k\u0131sa devre olu\u015fmas\u0131 konusunda ciddi bir risk yarat\u0131r. Hafifletme i\u015fleminden sonra t\u00fcm i\u00e7 katmanlar\u0131n, \u00e7ekme d\u00fczlemlerinin ve izlerin FR4 i\u00e7inde g\u00fcvenli bir \u015fekilde kaps\u00fcllenmi\u015f kalmas\u0131n\u0131 sa\u011flamak i\u00e7in, bunlar\u0131 kart kenar\u0131ndan yeterince geriye \u00e7ekerek uygun uzak tutma b\u00f6lgeleri belirlemelisiniz.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-4\"><strong class=\"schema-faq-question\">Ayn\u0131 PCB \u00fczerinde hem ENIG hem de Sert Alt\u0131n bulunmas\u0131 m\u00fcmk\u00fcn m\u00fcd\u00fcr?<\/strong> <p class=\"schema-faq-answer\">Evet, bu \u201cSe\u00e7ici Alt\u0131n Kaplama\u201d olarak bilinen \u00e7ok yayg\u0131n bir gerekliliktir. \u00dcretim s\u00fcreci, birden fazla maskeleme ve s\u0131y\u0131rma ad\u0131m\u0131 gerektirdi\u011fi i\u00e7in daha karma\u015f\u0131k ve pahal\u0131 hale gelir. \u00dcretici genellikle \u00f6nce sert alt\u0131n parmaklar\u0131 elektrokaplar, bunlar\u0131 maskeledikten sonra kart\u0131n geri kalan\u0131n\u0131 standart ENIG kimyasal banyolar\u0131nda i\u015fler. \u00dcretim \u00e7iziminizde hangi y\u00fczey kaplamas\u0131n\u0131n hangi \u00f6zelliklere uygulanaca\u011f\u0131n\u0131 a\u00e7\u0131k\u00e7a belirtmeyi unutmay\u0131n.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-5\"><strong class=\"schema-faq-question\">Ba\u011flant\u0131 \u00e7ubuklar\u0131 neden gereklidir ve bunlar\u0131 takmay\u0131 unutursam ne olur?<\/strong> <p class=\"schema-faq-answer\">Sert alt\u0131n kaplama, elektrolitik bir i\u015flem gerektirir; bu da kaplanacak her bir pedden s\u00fcrekli bir elektrik ak\u0131m\u0131n\u0131n ge\u00e7mesi gerekti\u011fi anlam\u0131na gelir. Ba\u011flant\u0131 \u00e7ubuklar\u0131, pedlerden harici kaplama baras\u0131na giden iletken yolu sa\u011flar. Bunlar\u0131 eklemeyi unutursan\u0131z, imalat\u00e7\u0131 standart elektrolitik y\u00f6ntemleri kullanarak parmaklar\u0131 kaplayamaz. Elektrolizsiz sert alt\u0131n kaplama i\u015flemleri mevcut olsa da, bunlar nadirdir, son derece pahal\u0131d\u0131r ve genellikle y\u00fcksek a\u015f\u0131nma gerektiren uygulamalar i\u00e7in gerekli kal\u0131nl\u0131\u011f\u0131 veya sertli\u011fi sa\u011flayamaz. Kenar konekt\u00f6rleri i\u00e7in ba\u011flant\u0131 \u00e7ubuklar\u0131n\u0131 daima kart\u0131n kenar\u0131na y\u00f6nlendirin.<\/p> <\/div> <\/div>","protected":false},"excerpt":{"rendered":"<p>PCB Tasar\u0131m\u0131nda Sert Alt\u0131n Kaplama Giri\u015fi Y\u00fcksek g\u00fcvenilirlik gerektiren uygulamalar i\u00e7in bask\u0131l\u0131 devre kartlar\u0131 (PCB\u2019ler) tasarlan\u0131rken, y\u00fczey kaplamas\u0131n\u0131n se\u00e7imi bir m\u00fchendisin almas\u0131 gereken en kritik kararlardan biridir. Elektrolizsiz Nikel Dald\u0131rma Alt\u0131n (ENIG) kaplamas\u0131, y\u00fczeye monte bile\u015fenlerin lehimlenmesi i\u00e7in m\u00fckemmel bir koplanar y\u00fczey sa\u011flasa da, kaymal\u0131 temas uygulamalar\u0131 i\u00e7in temelde uygun de\u011fildir. [\u2026]<\/p>","protected":false},"author":1,"featured_media":6441,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"hard gold plating","_yoast_wpseo_title":"Hard Gold Plating: Edge Connectors and Switch Contacts Design for Extreme Wear Resistance","_yoast_wpseo_metadesc":"A comprehensive engineering guide to hard gold plating for PCB edge connectors and switch contacts. 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