I-PCB kufuneka ikwazi ukumelana nomlilo kwaye ayinakutshisa kwiqondo lobushushu elithile, ukuze ithambe kuphela. Iqondo lobushushu ngeli xesha libizwa ngokuba liqondo lobushushu beglasi (inqaku leTG), elinxulumene nozinzo lobungakanani bePCB.
Zeziphi i-TG ephezulu ye-PCB kunye nezibonelelo zokusebenzisa i-TG PCB ephezulu?
Xa ubushushu be-TG ephezulu ye-PCB buphakama ukuya kwindawo ethile, i-substrate iya kutshintsha ukusuka kwi-"glass state" ukuya kwi-"rubber state", ngoko iqondo lokushisa ngeli xesha libizwa ngokuba yi-vitrification (TG) yebhodi. Ngamanye amazwi, i-TG lelona qondo lobushushu liphezulu apho i-substrate ihlala iqinile.
Loluphi uhlobo lwebhodi yePCB enalo ngokukodwa?
Inqanaba ukusuka ezantsi ukuya phezulu libonisa ngolu hlobo lungezantsi:
94HB - 94VO - 22F - CEM-1 - CEM-3 - FR-4
Iinkcukacha zezi zilandelayo:
I-94HB: ikhadibhodi eqhelekileyo, hayi umlilo (izinto zomgangatho ophantsi, i-die punching, ayinakwenziwa ibhodi yamandla)
I-94V0: ikhadibhodi ebuyisela idangatye (ukufa ngenqindi)
I-22F: i-fiberboard yeglasi enecala elinye (i-die punching)
I-CEM-1: ibhodi ye-fiberglass enecala elinye (ukugrunjwa kwekhompyuter kufuneka kwenziwe, kungafi ukubethelwa)
I-CEM-3: ibhodi ye-fiberglass ephindwe kabini (eyona nto iphantsi yebhodi ephindwe kabini ngaphandle kwebhodi emacala amabini, le nto ingasetyenziselwa iipaneli eziphindwe kabini, ezinexabiso eliphantsi kune-FR4)
I-FR4: ibhodi ye-fiberglass ephindwe kabini