Mavuto ayenera kutsatiridwa pamene mapulagi akulowaPCB Assemblyndondomeko

Zigawo za PCB ziyenera kusankhidwa moyenera pamaziko okwaniritsa zofunikira zamagawo.Tiyenera kukumbukira kuti gawo laling'ono lamagetsi la zigawo zomwe zili ndi ntchito yofanana, chitsanzo ndi ogulitsa osiyanasiyana angakhale ndi kusiyana kwakukulu.Ndiye, ndi mavuto ati omwe tiyenera kulabadira poyika zigawo mu PCB?

1. Chepetsani zotulukapo kuti mupewe kutseka kwa dera la CMOS

The loko-mu zotsatira ndi wapadera kulephera akafuna wa dera CMOS, chifukwa pali parasitic PNP transistor ndi NPN transistor mu dongosolo mkati CMOS dera, ndipo amapanga parasitic PNPN thyristor dongosolo, kotero loko-mu zotsatira za dera CMOS ndi. amatchedwanso "thyristor effect".

2. Kugwiritsa ntchito zosefera network

Nthawi zina chingwe chachitali cholowera chimafunika pakati pa makina ozungulira a CMOS ndi kulumikizana ndi makina, zomwe zimawonjezera kuthekera kwa kusokonezedwa ndi ma elekitiroma.Chifukwa chake, network yosefera iyenera kuganiziridwa.

3. RC network

Kumene kuli kotheka, pakuyika tcheru kwa zida za bipolar, netiweki ya RC yopangidwa ndi zopinga zokulirapo ndi ma capacitor okhala ndi 100pF osachepera amatha kuchepetsa kukopa kwa electrostatic discharge.

4. Kupewa pini ya chubu cholowetsa cha CMOS kuyimitsidwa.

Pewani kuti kumapeto kwa chipangizo cha CMOS chomwe chagulitsidwa pa bolodi yozungulira kuyimitsidwa.Panthawi imodzimodziyo, ziyenera kukhala tcheru kuzinthu zonse zosafunikira pa chipangizo cha CMOS saloledwa kuyimitsidwa.Chifukwa cholowetsacho chikayimitsidwa, kuthekera kolowetsako kudzakhala kosakhazikika.

Zomwe zili pamwambazi ndi chidule cha zovuta zomwe ziyenera kutsatiridwa pakuyika zigawo mu PCB.Ndikukhulupirira kuti zikhala zothandiza kwa inu.Kuti mumve zambiri, chonde pitani patsamba lathu www.pcbfuture.com