Iyini indinganiso yokukhetha izingxenye nezinto zokwakha lapho uhlanganisa i-PCB?

Ukucutshungulwa komhlangano we-PCB kufaka phakathi ukwakhiwa kwesekethe ephrintiwe, i-PCB prototyping,Ibhodi le-SMT PCB, ukutholakala kwengxenye nezinye izinqubo.Ngakho-ke, yiziphi izingxenye zokucubungula ibhodi le-PCBA namazinga okukhetha ama-substrate?

1. Ukukhethwa kwezingxenye

Ukukhethwa kwezingxenye kufanele kucabangele ngokugcwele indawo yangempela ye-SMB, futhi izingxenye ezivamile kufanele zikhethwe ngokusemandleni.Izingxenye zosayizi omncane akufanele zilandelwe ngobumpumputhe ukuze kugwenywe ukukhuphula izindleko.Amadivayisi e-IC kufanele aqaphele ukuthi umumo wephinikhodi kanye nesikhala sephini;I-QFP enezikhala zephinikhodi ezingaphansi kuka-0.5mm kufanele icatshangelwe ngokucophelela, ungasebenzisa iphakheji ye-BGA ngokuqondile.

Ukwengeza, ifomu lokupakisha lezingxenye, ukuthengiswa kwe-PCB, ukwethembeka komhlangano we-SMT PCB, kanye nomthamo wokuthwala izinga lokushisa kufanele kucatshangelwe.Ngemva kokukhetha izingxenye, isizindalwazi sezingxenye kufanele sisungulwe, okuhlanganisa usayizi wokufaka, usayizi wephinikhodi nomkhiqizi we-SMT kanye nenye idatha efanele.

2.Ukukhethwa kwezinto eziyisisekelo ze-PCB

Izinto eziyisisekelo zizokhethwa ngokuya ngemibandela yesevisi ye-SMB kanye nezidingo zokusebenza kwemishini nogesi.Inombolo yezindawo ze-foil ene-copper clad (eyodwa, kabili noma i-multi-layer) ye-substrate inqunywa ngokuvumelana nesakhiwo se-SMB;ukujiya kwe-substrate kunqunywa ngokuya ngosayizi we-SMB kanye nekhwalithi yezingxenye endaweni yeyunithi ngayinye.Uma ukhetha ama-substrates e-SMB, izici ezifana nezimfuneko zokusebenza kukagesi, inani le-Tg (izinga lokushisa lokushintsha kwengilazi), i-CTE, ukucaba kanye nentengo njll... kufanele kucatshangelwe.

Okungenhla isifinyezo esifushane seumhlangano webhodi lesifunda onyathelisiweukucubungula izingxenye kanye namazinga okukhetha i-substrate.Ukuze uthole imininingwane eyengeziwe, ungavakashela ngqo kuwebhusayithi yethu: www.pcbfuture.com ukuze ufunde kabanzi!