Ma board ozungulira osindikizidwa omwe amagwiritsidwa ntchito pamagetsi ndi zida zamakono ali ndi zida zambiri zamagetsi zolumikizidwa. Ichi ndi chowonadi chofunikira, popeza kuchuluka kwa zida zamagetsi pa bolodi losindikizidwa kumawonjezeka, momwemonso kukula kwa bolodi lozungulira. Komabe, extrusion kusindikizidwa dera bolodi kukula, BGA phukusi panopa ntchito.

Nazi ubwino waukulu wa phukusi BGA kuti muyenera kudziwa pankhaniyi. Chifukwa chake, yang'anani zomwe zaperekedwa pansipa:

1. BGA soldered phukusi ndi kachulukidwe mkulu

Ma BGA ndi amodzi mwa njira zothetsera vuto lopanga tinthu tating'onoting'ono toyendera mabwalo ophatikizika okhala ndi ma pini ambiri. Zokwera pamizere yapawiri zam'mwamba ndi ma pin grid array array phukusi akupangidwa pochepetsa voids Mazana a mapini okhala ndi malo pakati pa mapiniwa.

Ngakhale izi zimagwiritsidwa ntchito kubweretsa milingo yayikulu kwambiri, izi zimapangitsa kuti ntchito yazitsulo za soldering kukhala zovuta kuziwongolera. Izi zili choncho chifukwa chiwopsezo cholumikizira mwangozi mapini amutu kupita kumutu chikuchulukirachulukira pomwe malo pakati pa mapini akuchepa. Komabe, BGA Soldering phukusi akhoza kuthetsa vutoli bwino.

2. Kuwongolera kutentha

Chimodzi mwazabwino kwambiri za phukusi la BGA ndikuchepetsa kukana kwamafuta pakati pa PCB ndi phukusi. Izi zimathandiza kuti kutentha komwe kumapangidwa mkati mwa phukusi kumayenda bwino ndi dera lophatikizidwa. Kuphatikiza apo, zidzatetezanso chip kuti chisatenthedwe m'njira yabwino kwambiri.

3. M'munsi inductance

Zabwino kwambiri, ma conductor amagetsi ofupikitsa amatanthauza kutsika kwapansi. Inductance ndi chikhalidwe chomwe chingayambitse kusokoneza kosafunikira kwa ma siginecha mumayendedwe othamanga kwambiri amagetsi. Popeza BGA lili mtunda waufupi pakati pa PCB ndi phukusi, lili m'munsi kutsogolera inductance, adzapereka ntchito bwino kwa pini zipangizo.