Wopangayo atha kupanga bolodi losindikizidwa losindikizidwa mosadziwika bwino (PCB). Ngati mawaya safuna wosanjikiza wowonjezera, bwanji mugwiritse ntchito? Kodi kuchepetsa zigawo sikungapangitse gulu lozungulira kukhala lochepa thupi? Ngati pali gulu limodzi locheperako, kodi mtengo wake sungakhale wotsika? Komabe, nthawi zina, kuwonjezera wosanjikiza kumachepetsa mtengo.

Mapangidwe a bolodi lozungulira
Ma board ozungulira amakhala ndi mitundu iwiri yosiyana: kapangidwe kake ndi kapangidwe ka zojambulazo.

Pachimake chapakati, zigawo zonse zoyendetsa pa bolodi la dera zimakutidwa pazitsulo zapakati; mu zojambula zojambulazo, kokha mkati conductive wosanjikiza wa bolodi dera TACHIMATA pa zinthu pachimake, ndipo kunja conductive wosanjikiza ndi zojambulazo atavala dielectric bolodi. Zigawo zonse zoyendetsera zimalumikizidwa palimodzi kudzera mu dielectric pogwiritsa ntchito njira ya multilayer lamination.

Zida za nyukiliya ndi bolodi lokhala ndi mbali ziwiri lovala pafakitale. Chifukwa pachimake chilichonse chimakhala ndi mbali ziwiri, zikagwiritsidwa ntchito mokwanira, kuchuluka kwa zigawo za PCB ndi nambala yofanana. Bwanji osagwiritsa ntchito zojambulazo kumbali imodzi ndi mapangidwe apakati kwa ena onse? Zifukwa zazikulu ndi: mtengo wa PCB ndi digiri yopindika ya PCB.

Ubwino wa mtengo wa ma board owerengera owerengeka
Chifukwa cha kusowa kwa dielectric ndi zojambulazo, mtengo wa zipangizo zama PCB osawerengeka ndi wotsika pang'ono kuposa ma PCB owerengeka. Komabe, mtengo wopangira ma PCB osanjikizana ndiokwera kwambiri kuposa ma PCB osanjikiza. The processing mtengo wa wosanjikiza wamkati ndi chimodzimodzi; koma zojambulazo / pachimake mwachiwonekere zimawonjezera mtengo wokonza wa wosanjikiza wakunja.

Odd-nambala-wosanjikiza PCBs ayenera kuwonjezera osakhala muyezo laminated pachimake wosanjikiza ndondomeko yomangira kutengera ndondomeko ya maziko. Poyerekeza ndi kapangidwe ka zida za nyukiliya, kupanga bwino kwa mafakitale omwe amawonjezera zojambulazo kumachepa. Pamaso lamination ndi kugwirizana, pachimake akunja amafuna processing zina, amene kumawonjezera chiopsezo cha zokopa ndi etching zolakwika pa wosanjikiza akunja.

Kapangidwe kake kuti mupewe kupindika
Chifukwa chabwino kwambiri chosapanga PCB yokhala ndi zigawo zosawerengeka ndikuti kuchuluka kwa ma board ozungulira kumakhala kosavuta kupindika. Pamene PCB itakhazikika pambuyo pa multilayer circuit bonding process, kusiyana kosiyana kwa lamination kwapakatikati ndi mapangidwe a zojambulazo kumapangitsa PCB kupindika ikazizira. Pamene makulidwe a bolodi lozungulira akuwonjezeka, chiopsezo chopindika cha PCB chokhala ndi zigawo ziwiri zosiyana chimawonjezeka. Chinsinsi chochotsa kupindika kwa board board ndikutengera stack yokhazikika.

Ngakhale PCB yokhala ndi mulingo wina wopindika imakwaniritsa zofunikira, kuwongolera kotsatira kudzachepetsedwa, zomwe zimabweretsa kuwonjezeka kwa mtengo. Chifukwa zida zapadera ndi zaluso zimafunikira panthawi yosonkhanitsa, kulondola kwa kuyika kwa chigawo kumachepetsedwa, zomwe zidzawononga khalidwe.

Gwiritsani ntchito PCB yofanana
PCB yosawerengeka ikawoneka pamapangidwewo, njira zotsatirazi zitha kugwiritsidwa ntchito kukwaniritsa masanjidwe oyenera, kuchepetsa mtengo wopangira PCB, ndikupewa kupindika kwa PCB. Njira zotsatirazi zimakonzedwa motsatira zomwe amakonda.

A chizindikiro wosanjikiza ndi ntchito. Njirayi ingagwiritsidwe ntchito ngati gawo lamphamvu la mapangidwe a PCB ndilofanana ndipo chizindikiro cha chizindikiro ndi chosamvetseka. Wowonjezera wosanjikiza samawonjezera mtengo, koma amatha kufupikitsa nthawi yobereka ndikuwongolera mtundu wa PCB.

Onjezani mphamvu yowonjezera yowonjezera. Njirayi ingagwiritsidwe ntchito ngati gawo la mphamvu la mapangidwe a PCB ndi losamvetseka ndipo chizindikiro cha chizindikiro chimakhala chofanana. Njira yosavuta ndiyo kuwonjezera wosanjikiza pakati pa stack popanda kusintha zina. Choyamba, yendetsani mawaya mu PCB yosawerengeka, kenaka tengerani gawo la pansi pakati, ndikulemba zigawo zotsalazo. Izi ndizofanana ndi mawonekedwe amagetsi amtundu wokhuthala wa zojambulazo.

Onjezani chizindikiro chopanda kanthu pafupi ndi pakati pa stack ya PCB. Njirayi imachepetsa kusamvana kwa stacking ndikuwongolera mtundu wa PCB. Choyamba, tsatirani zigawo zosawerengeka kuti muyende, kenaka yikani chizindikiro chopanda kanthu, ndikulemba zigawo zotsalazo. Amagwiritsidwa ntchito m'mabwalo a microwave ndi makina osakanikirana (ma dielectric constants osiyanasiyana).

Ubwino wa moyenera laminated PCB
Mtengo wotsika, wosavuta kupindika, kufupikitsa nthawi yoperekera ndikuwonetsetsa kuti uli wabwino.