Feem ntau cov khw muag khoom siv hluav taws xob tau tsis meej pem txog tus nqi ntawm PCBs.Txawm tias qee cov neeg uas muaj ntau xyoo ntawm kev paub hauv PCB kev yuav khoom yuav tsis nkag siab txog qhov tseem ceeb.Qhov tseeb, tus nqi PCB yog tsim los ntawm cov hauv qab no:
Ua ntej, cov nqi sib txawv vim cov khoom sib txawv siv hauv PCB.
Noj cov khaubncaws sab nraud povtseg zoo tib yam pcb ua piv txwv, lub laminate txawv ntawm FR-4, CEM-3, thiab lwm yam nrog tuab ntawm 0.2mm txog 3.6mm.Lub thickness ntawm tooj liab txawv ntawm 0.5Oz mus rau 6Oz, tag nrho cov uas ua rau ib tug loj tus nqi sib txawv.Tus number case soldermask tus nqi kuj txawv ntawm cov khoom siv thermosetting number case thiab cov khoom siv xim ntsuab xim.
Qhov thib ob, cov nqi sib txawv vim muaj cov txheej txheem ntau lawm.
Cov txheej txheem ntau lawm ua rau cov nqi sib txawv.Xws li kub-plated board thiab tin-plated board, cov duab ntawm cov routing thiab xuas nrig ntaus, kev siv ntawm silk screen kab thiab qhuav zaj duab xis kab yuav tsim cov nqi sib txawv, uas ua rau muaj ntau haiv neeg.
Thib peb, cov nqi sib txawv vim qhov nyuaj thiab ceev.
PCB yuav raug nqi sib txawv txawm tias cov ntaub ntawv thiab cov txheej txheem yog tib yam, tab sis nrog qhov sib txawv thiab qhov ceev.Piv txwv li, yog tias muaj 1000 qhov ntawm ob lub rooj tsavxwm, lub qhov taub ntawm ib lub rooj tsavxwm loj dua 0.6 hli thiab lub qhov taub ntawm lwm lub rooj tsavxwm tsawg dua 0.6 hli, uas yuav tsim cov nqi sib txawv.Yog hais tias ob lub rooj tsav xwm Circuit Court yog tib yam hauv lwm qhov kev thov, tab sis cov kab dav sib txawv kuj ua rau cov nqi sib txawv, xws li ib lub rooj tsav xwm dav loj dua 0.2mm, thaum lwm qhov nrog tsawg dua 0.2mm.Vim tias cov laug cam dav tsawg dua 0.2 hli muaj qhov tsis zoo, uas txhais tau tias tus nqi tsim khoom yog siab dua li qub.
Plaub, tus nqi sib txawv vim muaj ntau yam kev xav tau ntawm cov neeg siv khoom.
Cov kev xav tau ntawm cov neeg siv khoom yuav cuam tshuam ncaj qha rau qhov tsis muaj qhov cuam tshuam hauv kev tsim khoom.Xws li ib lub rooj tsavxwm ua raws li IPC-A-600E class1 yuav tsum tau 98% dhau tus nqi, thaum ua raws li chav kawm 3 tsuas yog yuav tsum muaj 90% dhau tus nqi, ua rau cov nqi sib txawv rau lub Hoobkas thiab thaum kawg ua rau kev hloov pauv ntawm cov nqi khoom.
Post lub sij hawm: Jun-25-2022
