Enqubweni yokucubungula i-chip ye-SMT,isifunda esifushanekuyinto evamile kakhulu engalungile yokucubungula.Ibhodi lesekhethi ye-PCBA elifushane alikwazi ukusetshenziswa ngokujwayelekile.Okulandelayo kuyindlela yokuhlola evamile yesifunda esifushane sebhodi le-PCBA.

1. Kunconywa ukusebenzisa i-short circuit positioning analyzer ukuze uhlole isimo esibi.

2. Uma kwenzeka inani elikhulu lezifunda ezimfushane, kunconywa ukuthatha ibhodi lesifunda ukuze usike izintambo, bese unika amandla endaweni ngayinye ukuhlola izindawo ezinama-circuits amancane ngamunye ngamunye.

3. Kunconywa ukusebenzisa i-multimeter ukuze ubone ukuthi isifunda esibalulekile sifushane.Ngaso sonke isikhathi uma isiqeshana se-SMT siqedwa, i-IC idinga ukusebenzisa i-multimeter ukuze ithole ukuthi ukunikezwa kwamandla nomhlabathi kufushane.

4. Khanyisa inethiwekhi yesifunda esifushane kumdwebo we-PCB, hlola indawo ebhodini lesekhethi lapho kungenzeka khona ukuthi isekethe emfushane yenzeke, futhi unake ukuthi kukhona yini isekethe emfushane ngaphakathi kwe-IC.

5. Qinisekisa ukuthi ushisela ngokucophelela lezo zingxenye ezincane ze-capacitive, ngaphandle kwalokho umjikelezo omfushane phakathi kokunikezwa kwamandla nomhlabathi kungenzeka kakhulu.

6. Uma kukhona i-chip ye-BGA, ngoba amalunga amaningi e-solder ambozwe yi-chip futhi akulula ukubona, futhi angamabhodi wesifunda se-multilayer, kunconywa ukunqamula ukunikezwa kwamandla kwe-chip ngayinye kwinqubo yokuklama. , futhi uwaxhume ngobuhlalu kazibuthe noma ukumelana no-0 ohm.Esimeni sokujikeleza okufushane, ukunqamula ukutholwa kobuhlalu obuzibuthe kuzokwenza kube lula ukuthola i-chip ebhodini lesekethe.