Da farko za mu yi bayani dalla-dalla kan batunmu, wato, yadda mahimmancin ƙirar PCB ke da shi ga tsarin facin SMT.Dangane da abubuwan da muka bincika a baya, zamu iya gano cewa mafi yawan matsalolin inganci a cikin SMT suna da alaƙa kai tsaye da matsalolin tsarin gaba-gaba.Kamar dai manufar “yankin nakasa” da muka gabatar a yau.
Wannan yafi na PCB ne.Muddin ƙasan saman PCB ɗin ya lanƙwasa ko bai daidaita ba, ana iya lanƙwasa PCB yayin aikin shigarwa na dunƙule.Idan an rarraba ƴan sukurori a jere a cikin layi ko kusa da yankin bincike ɗaya, PCB ɗin za ta lanƙwasa kuma ta lalace saboda maimaita aikin damuwa yayin gudanar da tsarin shigar da dunƙule.Muna kiran wannan yanki mai lankwasa da yankin nakasa.
Idan an sanya masu ƙarfin guntu, BGAs, modules, da sauran abubuwan da ke canza damuwa a cikin yankin nakasawa yayin aikin jeri, to, haɗin gwiwa na solder bazai fashe ko karye ba.
Karyawar haɗin gwiwa na samar da wutar lantarki a cikin wannan yanayin yana cikin wannan yanayin
(1) Guji sanya abubuwan da ke da damuwa a cikin wuraren da ke da sauƙin lanƙwasa da lalacewa yayin taron PCB.
(2) Yi amfani da kayan aikin ɓangarorin ƙasa yayin aikin haɗin gwiwa don daidaita PCB inda aka shigar da dunƙule don guje wa lanƙwasa PCB yayin taro.
(3) Ƙarfafa haɗin gwiwar solder.
Lokacin aikawa: Mayu-28-2021
