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.

The PCB bolodi ili ndi mitundu iwiri yosiyana: mapangidwe apakati ndi mapangidwe a zojambulazo.

Pamapangidwe apakati, zigawo zonse zoyendetsa pa bolodi la PCB zimakutidwa pazinthu zapakati; mu mapangidwe zojambulazo, kokha mkati conductive wosanjikiza wa bolodi PCB TACHIMATA pa zinthu pachimake, ndipo chakunja conductive wosanjikiza ndi zojambulazo TACHIMATA 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 aliyense ali mbali ziwiri, pamene ntchito mokwanira, chiwerengero cha zigawo conductive wa bolodi PCB ndi chiwerengero. Bwanji osagwiritsa ntchito zojambulazo kumbali imodzi ndi mapangidwe apakati kwa ena onse?

Momwe mungachepetsere mtengo wamapangidwe ndi kupindika kwa bolodi la PCB

Mtengo wamtengo wapatali wa PCB wowerengeka

Chifukwa chakusowa kwa dielectric ndi zojambulazo, mtengo wa zipangizo zama PCB osawerengeka ndi wotsika pang’ono kuposa ma PCB owerengeka. Komabe, mtengo wokonza ma board a PCB osawerengeka ndiokwera kwambiri kuposa ma board a PCB owerengeka. The processing mtengo wa wosanjikiza wamkati ndi chimodzimodzi; koma zojambulazo / pachimake mwachiwonekere zimawonjezera mtengo wokonza wa wosanjikiza wakunja.

Odd-nambala PCB matabwa ayenera kuwonjezera sanali muyezo laminated pachimake wosanjikiza ndondomeko yomangira pamaziko a pachimake dongosolo ndondomeko. 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 etch zolakwika pa wosanjikiza akunja.

Kapangidwe kake kuti mupewe kupindika

Chifukwa chabwino osapangira matabwa a PCB okhala ndi zigawo zosawerengeka ndikuti zigawo zosawerengeka za PCB ndizosavuta kupindika. Pamene bolodi la PCB litakhazikika pambuyo pa ndondomeko yogwirizanitsa dera la multilayer, kusagwirizana kosiyana kwa kapangidwe kameneka ndi zojambula zojambulazo zidzachititsa kuti bolodi la PCB lipinde. Pamene makulidwe a bolodi wozungulira ukuwonjezeka, chiopsezo cha kupinda gulu la gulu la PCB chokhala ndi mitundu iwiri yosiyana chimakhala chachikulu. Chinsinsi kuchotsa PCB bolodi kupinda ndi kutengera okwana bwino. Ngakhale bolodi la PCB lomwe lili ndi digiri inayake yopindika limakwaniritsa 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

Pamene bolodi losawerengeka la PCB likuwonekera pamapangidwe, njira zotsatirazi zingagwiritsidwe ntchito kuti zitheke kusungitsa bwino, kuchepetsa ndalama zopangira bolodi za PCB, ndikupewa kupindika kwa bolodi la PCB. Njira zotsatirazi zimakonzedwa motsatira zomwe amakonda.

1. Wosanjikiza chizindikiro ndikuchigwiritsa ntchito. Njirayi ingagwiritsidwe ntchito ngati gawo lamphamvu la mapangidwe a PCB ndilofanana ndipo chizindikiro cha chizindikirocho ndi chosamvetseka. Wowonjezera wosanjikiza sakuwonjezera mtengo, koma ukhoza kufupikitsa nthawi yobereka ndikuwongolera khalidwe la bolodi la PCB.

2. Wonjezerani 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, tsatirani mawaya a bolodi a PCB osawerengeka, kenaka lembani wosanjikiza pansi pakati, ndikulemba zigawo zotsalazo. Izi ndizofanana ndi mawonekedwe amagetsi amtundu wokhuthala wa zojambulazo.

3. Onjezani wosanjikiza wopanda kanthu pafupi ndi pakati pa PCB stack. Njirayi imachepetsa kusamvana kwa stacking ndikusintha khalidwe la bolodi la 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, osavuta kupindika, kufupikitsa nthawi yobereka, ndikuwonetsetsa bwino.