Zinthu Zazikulu Zopanga PCB

Zida Zazikulu Zopangira PCB

Masiku ano, pali ambiri opanga PCB, mtengo si mkulu kapena otsika, khalidwe ndi mavuto ena sitidziwa kanthu, mmene kusankhaKupanga kwa PCBzipangizo?Processing zipangizo, zambiri mkuwa clad mbale, youma filimu, inki, etc., zotsatirazi zipangizo zingapo poyambitsa mwachidule.

1. Chovala chamkuwa

Amatchedwa mbale ya mkuwa ya mbali ziwiri.Kaya zojambulazo zamkuwa zimatha kuphimbidwa mwamphamvu pagawo lapansi zimatsimikiziridwa ndi chomangira, ndipo mphamvu yovula ya mbale yamkuwa imatengera magwiridwe antchito a binder.Ambiri ntchito mkuwa clad mbale makulidwe a 1.0 mm, 1.5 mm ndi 2.0 mm atatu.

(1) mitundu ya mbale zovala zamkuwa.

Pali njira zambiri zogawira mbale zovala zamkuwa.Nthawi zambiri malinga ndi mbale kulimbitsa zinthu ndi osiyana, akhoza kugawidwa mu: m'munsi pepala, galasi CHIKWANGWANI nsalu m'munsi, gulu m'munsi (CEM zino), Mipikisano wosanjikiza mbale m'munsi ndi m'munsi zinthu zapadera (ceramic, zitsulo pachimake m'munsi, etc.) asanu magulu.Malinga ndi zomatira zosiyanasiyana za utomoni zomwe zimagwiritsidwa ntchito ndi bolodi, CCL wamba pamapepala ndi: phenolic resin (XPC, XXXPC, FR-L, FR-2, etc.), epoxy resin (FE-3), polyester resin ndi mitundu ina. .CCL wamba wa magalasi CHIKWANGWANI chili ndi epoxy resin (FR-4, FR-5), pakali pano ndi mtundu wogwiritsidwa ntchito kwambiri wagalasi fiber base.Utoto wina wapadera (wokhala ndi nsalu zamagalasi, nayiloni, zosalukidwa, ndi zina zowonjezera): utomoni wa maleic imide wosinthidwa triazine (BT), polyimide (PI) utomoni, diphenylene ideal resin (PPO), maleic acid udindo imine - styrene resin (MS), poly (oxygen acid ester resin, polyene ophatikizidwa mu utomoni, etc. Malinga ndi lawi retardant katundu CCL, akhoza kugawidwa mu malawi retardant ndi sanali malawi retardant mbale. ndi chidwi kwambiri pa chitetezo cha chilengedwe, mtundu watsopano wa CCL wopanda zipangizo m'chipululu unapangidwa mu lawi retardant CCL, amene angatchedwe "wobiriwira lawi retardant CCL". , kuchokera kumagulu a CCL, amatha kugawidwa mu CCL, CCL yotsika kwambiri ya dielectric, CCL yotsika kutentha, CCL yowonjezera yowonjezera kutentha (yomwe imagwiritsidwa ntchito popanga gawo lapansi) ndi mitundu ina.

(2)zizindikiro zogwirira ntchito za mbale yachitsulo yamkuwa.

Kutentha kwa kusintha kwa galasi.Kutentha kukakwera kudera linalake, gawo lapansi lidzasintha kuchoka ku "galasi state" kupita ku "rabara state", kutentha kumeneku kumatchedwa kutentha kwa galasi (TG) ya mbale.Ndiye kuti, TG ndiye kutentha kwambiri (%) komwe gawo lapansi limakhala lolimba.Ndiko kunena kuti, wamba gawo lapansi zipangizo pa kutentha kwambiri, osati kutulutsa softening, mapindikidwe, kusungunuka ndi zochitika zina, komanso kusonyeza kuchepa kwambiri mawotchi ndi magetsi makhalidwe.

Nthawi zambiri, TG ya matabwa PCB pamwamba 130 ℃, TG matabwa mkulu ndi pamwamba 170 ℃, ndi TG matabwa sing'anga ndi pamwamba 150 ℃.Kawirikawiri mtengo wa TG wa bolodi yosindikizidwa ya 170, yotchedwa TG yapamwamba yosindikizidwa.The TG ya gawo lapansi ndi bwino, ndi kukana kutentha, kukana chinyezi, kukana mankhwala, kukhazikika ndi makhalidwe ena a bolodi osindikizidwa adzakhala bwino ndi bwino.Kukwera kwa mtengo wa TG, kumapangitsanso kutentha kwa mbale, makamaka munjira yopanda lead,Mtengo wapatali wa magawo TG PCBamagwiritsidwa ntchito kwambiri.

2. Dielectric nthawi zonse.

Ndi chitukuko chofulumira cha teknoloji yamagetsi, kuthamanga kwa chidziwitso ndi kufalitsa uthenga kumawonjezeka.Pofuna kukulitsa njira yolumikizirana, ma frequency ogwiritsira ntchito amasamutsidwa kumalo othamanga kwambiri, omwe amafunikira gawo laling'ono kukhala ndi otsika dielectric okhazikika E ndi otsika dielectric kutaya TG.Pokhapokha pochepetsa E ndi pomwe kuthamanga kwa ma siginecha kungapezeke, ndipo pakuchepetsa TG kokha komwe kungachepetse kutayika kwa kufalikira.

3. Kuwonjeza kowonjezera kutentha.

Ndi chitukuko cha mwatsatanetsatane ndi multilayer wa bolodi kusindikizidwa ndi BGA, CSP ndi matekinoloje ena, mafakitale PCB aika patsogolo zofunika apamwamba bata atavala mbale zamkuwa kukula.Ngakhale kukhazikika kwa mawonekedwe a mbale yamkuwa kumagwirizana ndi kupanga, kumadalira kwambiri zida zitatu za mbale yovala yamkuwa: utomoni, zolimbitsa thupi ndi zojambulazo zamkuwa.Njira yokhazikika ndiyo kusinthira utomoni, monga kusinthidwa kwa epoxy resin;Chepetsani kuchuluka kwa utomoni, koma izi zidzachepetsa kutsekemera kwamagetsi ndi zinthu zamafuta a gawo lapansi;Chojambula chamkuwa sichikhudza kukhazikika kwa mbale zamkuwa. 

4.UV blocking ntchito.

M'kati kupanga gulu gulu, ndi popularization wa photosensitive solder, pofuna kupewa mithunzi iwiri chifukwa cha kukopana mbali zonse, magawo onse ayenera kukhala ndi ntchito yoteteza UV.Pali njira zambiri zoletsa kufala kwa kuwala kwa ULTRAVIOLET.Nthawi zambiri, mtundu umodzi kapena iwiri yansalu yamagalasi ndi epoxy resin imatha kusinthidwa, monga kugwiritsa ntchito epoxy resin yokhala ndi UV-block komanso ntchito yodziwikiratu.

Huihe Circuits ndi fakitale yaukadaulo ya PCB, njira iliyonse imayesedwa mwamphamvu.Kuchokera pa bolodi la dera kuti mupange njira yoyamba mpaka yomaliza yoyendera khalidwe, wosanjikiza pa wosanjikiza ayenera kufufuzidwa mosamalitsa.Kusankha matabwa, inki yogwiritsidwa ntchito, zipangizo zogwiritsidwa ntchito, ndi kukhwima kwa ogwira ntchito zingakhudze khalidwe lomaliza la bolodi.Kuyambira pachiyambi mpaka pakuwunika kwabwino, timakhala ndi akatswiri oyang'anira kuti tiwonetsetse kuti njira iliyonse imamalizidwa bwino.Titsatireni!