Peb yuav ntsib ntau yam teeb meem kev nyab xeeb nyob rau hauv cov qauv PCB zoo tib yam, xws li qhov sib nrug ntawm vias thiab cov ntaub qhwv, thiab qhov sib txawv ntawm cov kab thiab kab, uas yog txhua yam peb yuav tsum xav txog.
Peb faib cov kev sib txawv no ua ob pawg:
Hluav taws xob kev nyab xeeb clearance
Tsis yog hluav taws xob kev nyab xeeb clearance
1. Kev nyab xeeb ntawm hluav taws xob
1. Qhov sib nrug ntawm cov xov hlau
Qhov sib nrug no yuav tsum xav txog qhov muaj peev xwm ntawm PCB cov chaw tsim khoom.Nws raug pom zoo tias qhov sib nrug ntawm cov kab mob tsis tsawg dua 4mil.Qhov tsawg kawg ntawm kab sib nrug kuj yog kab-rau-kab thiab kab-rau-pad sib nrug.Yog li, los ntawm qhov kev xav ntawm peb cov khoom, tau kawg, qhov loj dua qhov zoo dua yog tias ua tau.Feem ntau, cov pa 10mil yog ntau dua.
2. Pad aperture thiab ncoo dav
Raws li PCB chaw tsim tshuaj paus, yog hais tias lub ncoo aperture yog mechanically drilled, qhov tsawg kawg nkaus yuav tsum tsis txhob tsawg tshaj li 0.2 hli.Yog tias siv laser drilling, nws raug pom zoo tias qhov tsawg kawg nkaus tsis pub tsawg tshaj 4mil.Lub aperture kam rau ua yog txawv me ntsis nyob ntawm lub phaj, feem ntau yuav tswj tau nyob rau hauv 0.05mm, thiab qhov tsawg kawg nkaus ncoo dav yuav tsum tsis txhob qis dua 0.2mm.
3. Qhov sib nrug ntawm lub ncoo thiab lub ncoo
Raws li kev ua haujlwm muaj peev xwm ntawm PCB cov chaw tsim khoom, nws raug pom zoo tias qhov kev ncua deb ntawm lub ncoo thiab lub ncoo tsis pub tsawg dua 0.2 hli.
4. Qhov kev ncua deb ntawm daim tawv nqaij tooj liab thiab ntug ntawm lub rooj tsavxwm
Qhov kev ncua deb ntawm cov tawv nqaij tooj liab thiab PCB board ntug yog qhov zoo dua tsis pub tsawg dua 0.3 hli.Yog hais tias nws yog ib tug loj cheeb tsam ntawm tooj liab, nws feem ntau yuav tsum tau retracted los ntawm lub board ntug, feem ntau teem rau 20mil.
Raws li ib txwm muaj, vim yog kev xav txog kev xav ntawm lub rooj tsavxwm ua tiav, lossis kom tsis txhob curling lossis hluav taws xob luv luv tshwm sim los ntawm cov tooj liab raug rau ntawm ntug ntawm lub rooj tsavxwm, cov kws ua haujlwm feem ntau txo qhov loj ntawm cov tooj liab blocks los ntawm 20 mils txheeb ze rau ntawm lub rooj tsavxwm. .Cov tawv nqaij tooj liab tsis tas yuav kis mus rau ntawm ntug ntawm lub rooj tsavxwm.Muaj ntau txoj hauv kev los daws qhov zoo li no ntawm tooj liab shrinkage.Piv txwv li, kos ib txheej khaws cia rau ntawm ntug ntawm lub rooj tsavxwm, thiab tom qab ntawd teem qhov kev ncua deb ntawm cov tooj liab paving thiab qhov khaws cia.
2. Tsis muaj hluav taws xob kev nyab xeeb nyob deb
1. Tus cwj pwm dav thiab qhov siab thiab qhov sib txawv
Hais txog cov cim silk screen, peb feem ntau siv cov txiaj ntsig zoo xws li 5/30 6/36 mil thiab lwm yam.Vim hais tias thaum cov ntawv nyeem me dhau lawm, cov txheej txheem luam ntawv yuav plam.
2. Qhov kev ncua deb ntawm lub vijtsam txhob lo lo ntxhuav mus rau lub ncoo
Txhob lo lo ntxhuav npo tsis pub tso rau ntawm lub ncoo, vim hais tias yog tias lub vijtsam txhob lo lo ntxhuav yog npog nrog lub ncoo, lub ntsej muag txhob lo lo ntxhuav yuav tsis raug tinned thaum lub sij hawm tinning, uas yuav cuam tshuam rau cov khoom mounting.
Feem ntau, lub Hoobkas board xav tau qhov chaw ntawm 8mil kom tau tshwj tseg.Yog tias nws yog vim qee qhov PCB boards nruj heev, peb tuaj yeem lees txais 4mil suab.Tom qab ntawd, yog tias lub vijtsam txhob lo lo ntxhuav npog lub ncoo thaum tsim, lub rooj tsavxwm lub Hoobkas yuav tshem tawm ib feem ntawm lub vijtsam txhob lo lo ntxhuav sab laug ntawm lub ncoo thaum tsim khoom kom paub meej tias cov ntaub qhwv tinned.Yog li peb yuav tsum tau ua tib zoo mloog.
3. 3D qhov siab thiab kab rov tav sib nrug ntawm cov qauv siv tshuab
Thaum mounting cov khoom ntawm PCB, xav txog seb puas yuav muaj kev tsis sib haum xeeb nrog lwm cov khoom siv tshuab hauv kab rov tav thiab qhov siab ntawm qhov chaw.Yog li ntawd, nyob rau hauv tus tsim, nws yog tsim nyog los xav txog tag nrho cov adaptability ntawm qhov chaw qauv ntawm lub Cheebtsam, thiab nruab nrab ntawm lub tiav lawm PCB thiab cov khoom plhaub, thiab tseg ib tug zoo nyob deb ntawm txhua lub hom phiaj.