PCB waa inuu noqdaa mid dabka u adkaysta oo ma guban karo heerkul gaar ah, kaliya si uu u jilciyo. Barta heerkulka wakhtigan waxa loo yaqaan heerkulka kala-guurka dhalada (TG point), kaas oo la xidhiidha xasilloonida cabbirka PCB-ga.

Waa maxay TG PCB sare iyo faa'iidooyinka isticmaalka TG PCB sare?

Marka heerkulka TG PCB sare u kaco ilaa qaar ka mid ah, substrate-ku wuxuu bedeli doonaa "xaalad galaas" oo loo beddelo "xaalad caag", ka dibna heerkulka wakhtigan waxaa loo yaqaan heerkulka vitrification (TG) ee guddiga. Si kale haddii loo dhigo, TG waa heerkulka ugu sarreeya kaas oo substrate-ku uu ahaado mid adag.

Waa maxay nooca guddiga PCB uu leeyahay gaar ahaan?

Heerka hoose ilaa sare wuxuu muujinayaa sida hoose:

94HB - 94VO - 22F - CEM-1 - CEM-3 - FR-4

Faahfaahinta waa sida soo socota:

94HB: kartoonka caadiga ah, oo aan dab-damis ahayn (waxyaabo darajada ugu hooseeya, feeray dhiman, lagama samayn karo looxa korontada)

94V0: kartoonnada ololka celinaya ( feeray dhiman )

22F: sabuurad quraarad ah oo hal dhinac ah ( feeray dhinta)

CEM-1: loox fiberglass ah oo hal dhinac ah (kumbuyuutar qodida waa in la sameeyaa, oo aan dhiman feedh)

CEM-3: guddi labajibbaaran oo laba-geesood ah (waxyaabaha ugu hooseeya ee guddiga laba-geesoodka ah marka laga reebo laba-geesood, alaabtan waxaa loo isticmaali karaa laba-geesood, taas oo ka jaban FR4)

FR4: looxa fiberglass laba-dhinac ah