Kupanga bolodi losindikizidwa (PCB) ndi ntchito yanthawi zonse kwa akatswiri opanga zamagetsi (EE). Ngakhale adakhala ndi luso lakapangidwe ka PCB kwazaka zambiri, kupanga mapangidwe apamwamba kwambiri a ma PCB sikophweka. Pali zifukwa zambiri zofunika kuziganizira, ndipo zakuthupi ndi chimodzi mwa izo. Zipangizo zoyambirira zomwe zimagwiritsidwa ntchito popanga PCBS ndizofunikira kwambiri. Musanapange, zinthu zomwe zimafunikira pazinthu zosiyanasiyana ziyenera kuganiziridwa, monga kusinthasintha, kutentha, kutentha kwa dielectric, mphamvu ya dielectric, kulimba kwamphamvu, kulumikizana ndi zina zambiri. Kugwira ntchito ndikuphatikizika kwa bolodi lapa dera kumadalira kwathunthu pazida zomwe zimagwiritsidwa ntchito. Nkhaniyi ikufufuzanso zida za PCB. Chifukwa chake khalani tcheru kuti mumve zambiri.

Kodi mitundu ya zipangizo ntchito PCB kupanga?

Ili ndi mndandanda wazida zazikulu zomwe zimagwiritsidwa ntchito popanga ma board. Tiyeni tiwone.

Fr-4: FR ndi lalifupi chifukwa MOTO WABWINO. Ndi chinthu chomwe chimagwiritsidwa ntchito kwambiri ndi PCB pamitundu yonse ya kupanga kwa PCB. Fiberglass analimbitsa epoxy laminate FR-4 amapangidwa ntchito fiberglass nsalu nsalu ndi lawi wamtundu uliwonse utomoni binder. Nkhaniyi ndiyotchuka chifukwa imapereka kutchinjiriza kwamagetsi kwabwino ndipo imakhala ndi mphamvu zamagetsi. Izi zimapereka kulimba kwamphamvu kwambiri. Amadziwika chifukwa chopanga komanso kusungunuka bwino kwa chinyezi.

Fr-5: The gawo lapansi ndi wopangidwa ndi galasi CHIKWANGWANI cholimbitsa zakuthupi ndi epoxy utomoni binder. Ichi ndi chisankho chabwino pamapangidwe amitundu yambiri yama board. Imagwira bwino pakuwongolera kopanda kutsogolera ndipo imakhala ndi makina abwino kwambiri pamatenthedwe. Amadziwika chifukwa chotsika kwambiri kwa chinyezi, kukana mankhwala, magetsi abwino kwambiri komanso mphamvu yayikulu.

Fr-1 ndi FR-2: Amapangidwa ndi mapepala ndi phenolic mankhwala ndipo ndi abwino kwa mapangidwe amtundu umodzi wosanjikiza. Zipangizo zonsezi zili ndi zofanana, koma FR2 ili ndi magalasi ochepera kusintha kuposa FR1.

Cem-1: Zinthu izi ndi za gulu lazida zopangira epoxy (CEM). Choikidwacho chimakhala ndi utomoni wa epoxy, nsalu ya fiberglass komanso pachimake pa fiberglass. Zinthuzo, zomwe zimagwiritsidwa ntchito m’mabwalo azungu limodzi, ndi zotsika mtengo komanso zotsekemera malawi. Ndiwotchuka chifukwa chamagetsi komanso magwiridwe antchito amagetsi.

Cem-3: Mofanana ndi CEM-1, ichi ndi chinthu china chophatikiza epoxy. Ili ndi zida zamoto zomwe zimagwiritsidwa ntchito poyimitsa matabwa. Imakhala yolimba poyerekeza ndi FR4, koma yotsika mtengo kuposa FR4. Chifukwa chake, ndi njira ina yabwino ku FR4.

Mkuwa: Mkuwa ndiye chisankho choyambirira pakupanga ma board osakwatira komanso ma multilayer. Izi ndichifukwa choti zimapatsa mphamvu kwambiri, kutentha kwambiri kwamagetsi ndi magetsi komanso kuchepa kwa mankhwala.

High Tg: High Tg imawonetsa kutentha kwakukulu kwamagalasi. Nkhaniyi ya PCB ndi yabwino kwa matabwa omwe akufuna ntchito. Zipangizo za Tg zimakhala ndi kutentha kwambiri komanso kulimba kwa nthawi yayitali.

Rogers: Amadziwika kuti RF, nkhaniyi imadziwika chifukwa chogwirizana ndi ma laminates a FR4. Chifukwa chakwezetsa kwakanthawi kocheperako komanso kusunthidwa kolimba, ma board oyenda opanda lead amatha kusinthidwa mosavuta.

Zotayidwa: Izi malleable ndi malleable zakuthupi za PCB zimalepheretsa matabwa amkuwa kutenthedwa. Anasankhidwa makamaka chifukwa chotha kutulutsa kutentha msanga.

Aluminium wopanda Halogen: Chitsulo ichi ndichabwino kuti ntchito zisawonongeke. Aluminium yopanda Halogen yasintha ma dielectric mosalekeza komanso kufalikira kwa chinyezi.

Kwa zaka zambiri, PCBS yatchuka kwambiri ndipo yapeza ntchito zosiyanasiyana m’mafakitale omwe amafunikira ma circuits ovuta. Chifukwa chake, kusankha zinthu zoyenera za PCB ndikofunikira kwambiri, chifukwa zimakhudza osati magwiridwe antchito okha, komanso mtengo wake wonse. Sankhani zida kutengera zofunikira pakugwiritsa ntchito, zochitika zachilengedwe, ndi zolephera zina zomwe PCB imakumana nazo.