8 Txheej ENIG FR4 Multilayer PCB
Qhov nyuaj ntawm Multilayer PCB Board Prototyping
1. Qhov nyuaj ntawm interlayer alignment
Vim hais tias ntawm ntau txheej ntawm multilayer PCB board, calibration yuav tsum tau ntawm PCB txheej yog siab dua thiab siab dua.Feem ntau, kev sib haum xeeb ntawm cov khaubncaws sab nraud povtseg yog tswj ntawm 75um.Nws yog qhov nyuaj dua los tswj cov kev sib raug zoo ntawm multilayer PCB board vim qhov loj ntawm chav tsev, qhov kub thiab av noo nyob rau hauv cov duab hloov dua siab tshiab rhiav, dislocation sib tshooj tshwm sim los ntawm qhov tsis sib xws ntawm cov cores sib txawv, thiab qhov chaw ntawm cov txheej txheem. .
2. Qhov nyuaj ntawm kev tsim hluav taws xob sab hauv
Multilayer PCB board txais cov ntaub ntawv tshwj xeeb xws li siab TG, kev kub ceev, siab zaus, hnyav tooj liab, nyias dielectric txheej thiab lwm yam, uas tso rau pem hauv ntej siab yuav tsum tau rau sab hauv Circuit Court ntau lawm thiab graphic loj tswj.Piv txwv li, kev ncaj ncees ntawm impedance teeb liab kis tau tus mob tsub kom qhov nyuaj ntawm inner circuit fabrication.Qhov dav thiab kab sib nrug me me, qhib Circuit Court thiab luv Circuit Court nce, tus nqi dhau yog tsawg;nrog ntau cov kab teeb liab txheej txheej, AOI sab hauv kom pom qhov tshwm sim yuav nce.Lub puab phaj yog nyias, yooj yim rau wrinkle, tsis zoo raug, yooj yim rau curl etching;multilayer PCB feem ntau yog pawg thawj coj saib, uas muaj chav tsev loj dua thiab cov nqi ntau dua.
3. Nyuaj hauv lamination thiab fitting manufacturing
Ntau lub hauv paus tseem ceeb thiab cov laug cam ib nrab yog superimposed, uas ua rau muaj qhov tsis xws luag xws li swb phaj, lamination, resin void thiab npuas residue hauv stamping ntau lawm.Hauv kev tsim cov qauv laminated, qhov kub tsis kam, siab tsis kam, cov ntsiab lus kua nplaum thiab dielectric thickness ntawm cov khoom yuav tsum tau txiav txim siab tag nrho, thiab cov khoom tsim nyog nias lub tswv yim ntawm multilayer phaj yuav tsum tau ua.Vim muaj cov txheej txheem loj, kev nthuav dav thiab kev cog lus tswj thiab qhov loj me coefficient them tsis zoo ib yam, thiab nyias txheej txheej txheej insulating yog ib qho yooj yim uas ua rau tsis ua hauj lwm ntawm inter-layer kev ntseeg siab.
4. Drilling ntau lawm nyuaj
Kev siv lub siab TG, kev kub ceev, siab zaus, tuab tooj liab tshwj xeeb phaj ua rau cov drilling roughness, drilling burr thiab drilling stain tshem tawm nyuaj.Ntau txheej, cov cuab yeej drilling yog ib qho yooj yim tawg;CAF tsis ua hauj lwm tshwm sim los ntawm tuab BGA thiab nqaim qhov sib nrug ntawm phab ntsa yog yooj yim ua rau inclined drilling teeb meem vim PCB thickness.
