a cikin PCB Tsarin ƙira, shimfidar PCB da ƙayyadaddun abubuwa na iya haɗawa da kayan tushe na allon kewayawa, laminate da babban tari. Waɗannan zaɓuɓɓukan kyakkyawan amfani ne na ƙira-zuwa-ƙera (DFM) gama gari ga kowa. Koyaya, yawancin zaɓuɓɓukan gamawar PCB galibi ba a la’akari da su sosai. Madadin haka, ana amfani da tsoffin ƙimar software. Duk da haka, ƙaddamar da farfajiya yana da mahimmancin la’akari. Yana rinjayar amincin taron PCB da allon kewayawa ta hanyar kare alamun tagulla da ƙarfafa haɗin gwiwar solder. Bugu da kari, an jera nau’ikan jiyya na saman PCB da yawa a ƙasa.

Matsayin siyar da iska mai zafi (HASL)

HASL mara gubar

Organic Solderability Preservative (OSP)

Azurfa Immersion (Au)

Tin Immersion (Sn)

Electroless nickel plating (ENIG)

Electroless nickel da sinadarai palladium immersion zinariya (ENEPIG)

Electrolytic solderable zinariya

Electrolytic wuya zinariya

Yin zaɓin da ya dace don ƙirar ku yana buƙatar fahimtar bambance-bambance tsakanin nau’ikan da ke akwai.

1. Sayar da ba ta da gubar-bi’a ga Ƙuntatawar Abubuwa masu haɗari (ROHS).

2. Gudanar da hankali-mai sauƙi don gurɓata ko lalacewa saboda sarrafawa.

3. Waya bonding-iya samar da mai kyau waya bonding dangane.

4. Ana iya amfani da ƙananan farar-ƙarancin don ƙananan abubuwan da aka gyara, kamar ball grid array (BGA).

5. Amfani da lamba-amfani da lamba azaman lamba.

6. Rayuwar rayuwa-tare da kyakkyawar rayuwa mai kyau, ana iya adana shi fiye da watanni shida.

7. Extra cost-yawanci ƙara PCB masana’antu kudin.

Yanzu, tare da saitin halayen kwatanta, za mu iya magance matsalar wane nau’in PCB ya ƙare don amfani.

Kwatanta nau’ikan jiyya na saman PCB

Abubuwan da ke sama suna da mahimmanci sosai kuma ana iya amfani da su don taimaka muku zaɓar mafi kyawun nau’in jiyya na PCB. Koyaya, yakamata ku tuntuɓi mai kera kwangila (CM) don fahimtar takamaiman bambance-bambancen farashi da sauran abubuwan da zasu iya shafar shawararku, kamar ƙarin lokacin juyawa.