A matsayin wani bangare na da’irar lantarki, mahimmancin buga kewaye hukumar an ƙara ƙaruwa sosai. Akwai ma’auni da yawa don zaɓar su don ayyukan. Amma zaɓuɓɓuka dangane da ƙarewar ƙasa suna samun shahara. Ƙarshen farfajiya shine murfin da aka yi akan saman saman PCB. Maganin farfajiya yana aiwatar da ayyuka guda biyu – kare da’irar jan ƙarfe da yin aiki azaman mai walƙiya yayin taron PCB. Akwai manyan nau’ikan gamawa biyu: Organic da ƙarfe. Wannan labarin yayi magana akan sanannen maganin farfajiyar PCB na ƙarfe-PCBS-zinare.

Fahimci 4-Layer PCB-zinare

PCB-Layer 4 ya ƙunshi yadudduka 4 na substrate FR4, 70 um zinari da 0.5 OZ zuwa 7.0 OZ kauri mai kauri. Mafi girman girman rami shine 0.25mm kuma mafi ƙarancin waƙa/farar shine 4Mil.

An liƙa ƙananan yadudduka na zinare akan nickel sannan akan jan ƙarfe. Nickel yana aiki azaman shinge na watsawa tsakanin jan ƙarfe da zinare kuma yana hana su haɗuwa. Zinari yana narkewa yayin walda. Nickel yawanci tsakanin kauri 100 da 200 kauri da zinari tsakanin kauri 2 zuwa 4 kauri.

Gabatarwa ga hanyoyin zinaren zinare akan PCB

Ana sanya murfin akan farfajiyar kayan FR4 ta hanyar sa ido sosai na sinadarai. Bugu da ƙari, ana amfani da sutura bayan amfani da juriya. A wasu lokuta, duk da haka, ana amfani da rufin kafin walda, amma wannan yana da wuya. Wannan rufin ya fi sauran nau’o’in murfin ƙarfe tsada. Saboda rufin an yi shi ne ta hanyar sunadarai, ana kiransa sinadarin nickel leaching (ENIG).

Amfani da yadudduka huɗu na PCB na ENIG

Ana amfani da waɗannan PCBS ɗin a cikin tsararren grid ball (BGA) da na’urorin hawa saman (SMD). Ana ɗaukar zinare a matsayin jagora mai kyau na wutar lantarki. Wannan shine dalilin da ya sa yawancin sabis na taro kewaye suna amfani da wannan nau’in jiyya na farfajiya don da’irori masu yawa.

Amfanin farfajiyar farfajiyar zinari da aka rushe

Fa’idodi masu zuwa na ƙarewar zinare sun sa su shahara sosai a cikin sabis ɗin taron lantarki.

Ba a buƙatar yin fa’ida akai -akai.

Tsarin reflux yana ci gaba.

Samar da kyakkyawan ƙarfin gwajin wutar lantarki

Kyakkyawan mannewa

Yana ba da plating a kwance kewaye da da’ira da gammaye.

Fuskokin da aka nutse suna ba da ƙyalli mai kyau.

Za a iya weld line.

Bi hanyoyin aikace-aikacen da aka gwada lokaci-lokaci.