Yatsar Zinariya

A kan sandunan ƙwaƙwalwar ajiyar kwamfuta da katunan zane, za mu iya ganin jerin lambobin sadarwa na zinariya, waɗanda ake kira "yatsun zinare". Finger na Zinariya (ko Mai Haɗin Edge) a cikin ƙirar PCB da masana'antar samarwa yana amfani da mai haɗa mai haɗawa azaman hanyar fita don allo don haɗawa da hanyar sadarwa. Na gaba, bari mu fahimci yadda ake mu'amala da yatsun zinari a cikin PCB da wasu cikakkun bayanai.

Hanyar maganin saman PCB yatsa na zinari
1. Electroplating nickel zinariya: kauri har zuwa 3-50u ", saboda ta m conductivity, hadawan abu da iskar shaka juriya da kuma ci juriya, shi ne yadu amfani a zinariya yatsa PCBs cewa bukatar m saka da kuma cire ko PCB allon cewa bukatar m inji gogayya Sama, amma saboda tsadar platin zinare, ana amfani da shi ne kawai don yin platin zinari kawai kamar yatsun zinare.

2. nutsewa zinariya: A kauri ne na al'ada 1u ", har zuwa 3u" saboda ta m conductivity, flatness da solderability, shi ne yadu amfani a high-daidaici PCB allon tare da button matsayi, bonded IC, BGA, da dai sauransu Gold yatsa PCBs. tare da low lalacewa juriya bukatun kuma iya zabar dukan hukumar nutsewa zinariya tsari. Farashin aikin zinari na nutsewa ya yi ƙasa da na tsarin zinari. Launin Immersion Gold rawaya ne na zinariya.

Ayyukan aikin yatsa na zinari a cikin PCB
1) Domin ƙara juriya na yatsun zinare, yatsun zinari yawanci suna buƙatar a yi su da zinari mai wuya.
2) Yatsun zinare suna buƙatar chamfered, yawanci 45 °, sauran kusurwoyi kamar 20 °, 30 °, da sauransu. Idan babu chamfer a cikin zane, akwai matsala; Ana nuna chamfer 45° a cikin PCB a cikin hoton da ke ƙasa:

3) Yatsan zinare yana buƙatar a bi da shi azaman gabaɗayan abin rufe fuska don buɗe taga, kuma PIN ɗin baya buƙatar buɗe ragar karfe;
4) Tin na nutsewa da kwandon nutsewa na azurfa suna buƙatar kasancewa a mafi ƙarancin nisa na 14mil daga saman yatsa; ana ba da shawarar cewa kushin ya fi 1mm nesa da yatsa yayin ƙira, gami da ta pads;
5) Kar a yada tagulla a saman yatsan zinare;
6) Dukkan yadudduka na ciki na yatsan zinari suna buƙatar yanke tagulla, yawanci nisa na jan karfe da aka yanke ya fi girma 3mm; ana iya amfani da shi don yanke tagulla rabin yatsa da yanke tagulla gabaɗaya.

Shin "zinariya" na yatsun zinari na zinariya?

Da farko, bari mu fahimci ra'ayoyi guda biyu: zinariya mai laushi da zinariya mai wuya. Zinariya mai laushi, gwal gabaɗaya mafi laushi. Gold mai wuya gabaɗaya wani abu ne na gwal mai wuya.

Babban aikin yatsa na zinari shine haɗawa, don haka dole ne ya kasance yana da kyakkyawan halayen lantarki, juriya, juriya na iskar shaka da juriya na lalata.

Saboda nau'in zinari mai tsabta (zinariya) yana da laushi mai laushi, yatsun zinari gabaɗaya ba sa amfani da zinari, amma kawai Layer na "gina mai wuyar gwal (gwanin gwal)" an sanya shi a kan shi, wanda ba zai iya samun kyakkyawan aiki na zinare ba, amma Har ila yau, sanya shi resistant Abrasion yi da kuma hadawan abu da iskar shaka juriya.

Don haka ya PCB yayi amfani da "zinari mai laushi"? Amsar ita ce ba shakka akwai amfani, kamar fuskar tuntuɓar wasu maɓallan wayar hannu, COB (Chip On Board) tare da waya ta aluminum da sauransu. Amfani da zinari mai laushi gabaɗaya shine saka zinaren nickel akan allon kewayawa ta hanyar lantarki, kuma sarrafa kaurinsa ya fi sassauƙa.