PCB yuav tsum tiv taus hluav taws thiab tsis tuaj yeem hlawv ntawm qee qhov kub, tsuas yog ua kom muag muag. Qhov ntsuas kub ntawm lub sijhawm no yog hu ua iav hloov pauv kub (TG point), uas cuam tshuam rau qhov loj ntawm PCB.

Dab tsi yog qhov siab TG PCB thiab qhov zoo ntawm kev siv siab TG PCB?

Thaum qhov kub thiab txias ntawm TG PCB nce mus rau qee qhov yog, lub substrate yuav hloov ntawm "iav xeev" mus rau "lub xeev roj hmab", ces qhov kub ntawm lub sij hawm no yog hu ua vitrification kub (TG) ntawm lub rooj tsavxwm. Hauv lwm lo lus, TG yog qhov kub siab tshaj plaws uas lub substrate tseem nruj.

Dab tsi yog PCB board muaj tshwj xeeb?

Cov theem ntawm hauv qab mus rau sab saum toj qhia raws li hauv qab no:

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

Cov ntsiab lus yog raws li nram no:

94HB: cov duab los qhia zoo tib yam, tsis muaj hluav taws kub (cov khoom siv qis tshaj plaws, tuag xuas nrig ntaus, tsis tuaj yeem ua rau hauv lub hwj chim board)

94V0: nplaim retardant cardboard (tuag xuas nrig ntaus)

22F: ib sab iav fiberboard (tuag xuas nrig ntaus)

CEM-1: ib sab fiberglass board (lub computer drilling yuav tsum tau ua, tsis tuag xuas nrig ntaus)

CEM-3: ob-sided fiberglass board (cov khoom qis tshaj ntawm ob sab board tshwj tsis yog lub rooj tsavxwm ob sab, cov khoom siv no tuaj yeem siv rau ob chav panels, uas yog pheej yig dua FR4)

FR4: ob-sided fiberglass board