mu PCB kapangidwe kake, mawonekedwe a PCB ndi mafotokozedwe azinthu angaphatikizepo zinthu zoyambira pa bolodi yozungulira, laminate ndi stack yoyambira. Zosankha izi ndizabwino kugwiritsa ntchito Design-to-Manufacture (DFM) yodziwika kwa onse. Komabe, zosankha zambiri za kumaliza kwa PCB nthawi zambiri sizimaganiziridwa mokwanira. M’malo mwake, zosintha za pulogalamuyo zimagwiritsidwa ntchito. Komabe, kukwera pamwamba ndi chinthu chofunikira kwambiri. Zimakhudza kudalirika kwa PCB msonkhano ndi bolodi dera poteteza kuda mkuwa ndi kulimbikitsa kugwirizana solder. Komanso, mitundu ingapo ya mankhwala pamwamba PCB zalembedwa pansipa.

Gawo la kutentha kwa mpweya (HASL)

HASL yopanda kutsogolera

Organic Solderability Preservative (OSP)

Kumiza Siliva (Au)

Tini Yomiza (Sn)

Electroless nickel plating (ENIG)

Nickel wopanda electroless ndi chemical palladium kumizidwa golide (ENEPIG)

Electrolytic golide wogulitsidwa

Electrolytic golide wolimba

Kupanga chisankho choyenera pakupanga kwanu kumafuna kumvetsetsa kusiyana pakati pa mitundu yomwe ilipo.

1. Wogulitsa wopanda kutsogolera-amatsatira malamulo Oletsa Zinthu Zowopsa (ROHS).

2. Processing tilinazo-zosavuta kuipitsidwa kapena kuonongeka chifukwa processing.

3. Kulumikiza mawaya-kutha kupanga kulumikizana bwino kwa waya.

4. Small phula-angagwiritsidwe ntchito pazigawo zing’onozing’ono phula, monga mpira gululi array (BGA).

5. Contact ntchito-ntchito kukhudzana monga kukhudzana.

6. Moyo wa alumali – wokhala ndi alumali wabwino, ukhoza kusungidwa kwa miyezi isanu ndi umodzi.

7. Owonjezera mtengo-kawirikawiri kuwonjezera PCB kupanga mtengo.

Tsopano, ndi mawonekedwe ofananiza, titha kuthetsa vuto la mtundu wanji wa PCB yomaliza kugwiritsa ntchito.

Kuyerekeza kwa mitundu ya chithandizo cha PCB pamwamba

Makhalidwe apamwambawa ndi ofunika kwambiri ndipo angagwiritsidwe ntchito kukuthandizani kusankha mtundu wabwino kwambiri wa mankhwala apamwamba a PCB. Komabe, muyenera kufunsa wopanga makontrakiti (CM) kuti mumvetsetse kusiyana kwamitengo ndi zinthu zina zomwe zingakhudze chisankho chanu, monga nthawi yowonjezerapo yosinthira.