Kodi mtundu wa bolodi la PCB ndi chiyani, monga momwe dzinalo likusonyezera, mukapeza bolodi la PCB, mwachidziwitso kwambiri mukhoza kuona mtundu wa mafuta pa bolodi, zomwe timatchula kuti mtundu wa bolodi la PCB. Mitundu yodziwika bwino imaphatikizapo zobiriwira, buluu, zofiira ndi zakuda, etc. Dikirani.

1. Inki yobiriwira ndiyomwe imagwiritsidwa ntchito kwambiri, yayitali kwambiri m'mbiri, komanso yotsika mtengo pamsika wamakono, kotero zobiriwira zimagwiritsidwa ntchito ndi ambiri opanga monga mtundu waukulu wazinthu zawo.

2. Munthawi yanthawi zonse, zinthu zonse za PCB board ziyenera kudutsa mukupanga ma board ndi ma SMT panthawi yopanga. Popanga bolodi, pali njira zingapo zomwe ziyenera kudutsa m'chipinda chachikasu, chifukwa zobiriwira zimakhala zachikasu Zotsatira za chipinda chowala zimakhala bwino kuposa mitundu ina, koma ichi si chifukwa chachikulu.

Pogulitsa zinthu mu SMT, PCB imayenera kudutsa njira monga solder paste ndi chigamba ndi kutsimikizira komaliza kwa AOI. Njirazi zimafuna mawonekedwe owoneka bwino komanso kusanja. Mtundu wobiriwira wobiriwira ndi wabwino pozindikiritsa chidacho.

3. Common PCB mitundu ndi wofiira, wachikasu, wobiriwira, buluu ndi wakuda. Komabe, chifukwa cha mavuto monga kupanga, njira yowunikira khalidwe la mizere yambiri iyenerabe kudalira kuyang'ana kwa maso ndi kuzindikira kwa ogwira ntchito (zowonadi, zambiri zamakono zoyesera zowulukira zikugwiritsidwa ntchito panopa). Maso amangoyang'ana pa bolodi pansi pa kuwala kwamphamvu. Iyi ndi ntchito yotopetsa kwambiri. Kunena zoona, zobiriwira ndizosavulaza m'maso, kotero opanga ambiri pamsika pano amagwiritsa ntchito ma PCB obiriwira.

4. Mfundo ya buluu ndi yakuda ndi yakuti iwo amatsatiridwa ndi zinthu monga cobalt ndi carbon, zomwe zimakhala ndi magetsi ena, komanso mavuto afupipafupi amatha kuchitika mphamvu ikayaka. Komanso, ma PCB obiriwira ndi ochezeka ndi chilengedwe, komanso m'malo otentha kwambiri Akagwiritsidwa ntchito pakatikati, nthawi zambiri palibe mpweya wapoizoni womwe umatulutsidwa.

Palinso ochepa opanga pamsika omwe amagwiritsa ntchito matabwa akuda a PCB. Zifukwa zazikulu za izi ndi zifukwa ziwiri:

Amawoneka apamwamba kwambiri;
Bolodi lakuda silophweka kuwona mawaya, zomwe zimabweretsa zovuta zina pa bolodi lojambula;

Pakadali pano, matabwa ambiri ophatikizidwa ndi Android ndi ma PCB akuda.

5. Kuyambira pakati ndi kumapeto kwa zaka za zana lapitali, makampaniwa ayamba kumvetsera mtundu wa matabwa a PCB, makamaka chifukwa opanga ambiri amtundu woyamba adatengera zojambula zamtundu wa bolodi za PCB zamitundu yapamwamba, kotero anthu. pang'onopang'ono amakhulupirira kuti PCB Ngati mtundu ndi wobiriwira, uyenera kukhala wapamwamba-mapeto.