Chojambula chamkuwaali ndi mlingo wochepa wa okosijeni pamwamba ndipo akhoza Ufumuyo ndi zosiyanasiyana magawo osiyanasiyana, monga zitsulo, insulating zipangizo. Ndipo zojambulazo zamkuwa zimagwiritsidwa ntchito makamaka muchitetezo chamagetsi ndi antistatic. Kuyika chojambula chamkuwa cha conductive pamwamba pa gawo lapansi ndikuphatikizidwa ndi gawo lapansi lachitsulo, kumapereka kupitiliza kwabwino kwambiri komanso chitetezo chamagetsi. Zitha kugawidwa mu: zojambulazo zomatira zamkuwa, zojambulazo zamkuwa zamkuwa, zojambulazo zamkuwa zamkuwa, ndi zina zotero.

Mundimeyi, ngati mukufuna kuphunzira zambiri za zojambula zamkuwa popanga PCB, chonde onani ndikuwerenga zomwe zili pansipa mundimeyi kuti mudziwe zambiri zaukadaulo.

Kodi zojambula zamkuwa zomwe zimapangidwa ndi PCB ndi ziti?

Chojambula chamkuwa cha PCBndi makulidwe oyambirira amkuwa omwe amagwiritsidwa ntchito pazigawo zakunja ndi zamkati za bolodi ya PCB yambiri. Kulemera kwa mkuwa kumatanthauzidwa ngati kulemera (mu ma ounces) amkuwa omwe amapezeka pamtunda umodzi wa dera. Izi chizindikiro zimasonyeza makulidwe wonse wamkuwa pa wosanjikiza. MADPCB imagwiritsa ntchito zolemera zamkuwa zotsatirazi popanga PCB (pre-plate). Kulemera kwake kuyeza mu oz/ft2. Kulemera kwa mkuwa koyenera kungasankhidwe kuti kugwirizane ndi zofunikira zapangidwe.

· Popanga PCB, zojambula zamkuwa zimakhala m'mipukutu, yomwe ili pakompyuta yokhala ndi chiyero cha 99.7%, ndi makulidwe a 1/3oz/ft2 (12μm kapena 0.47mil) - 2oz/ft2 (70μm kapena 2.8mil).

· Chojambula chamkuwa chimakhala ndi mpweya wochepa wa pamwamba ndipo chikhoza kuphatikizidwa ndi opanga laminate ku zipangizo zosiyanasiyana zoyambira, monga chitsulo, polyimide, FR-4, PTFE ndi ceramic, kuti apange laminates zamkuwa.

· Komanso akhoza anayambitsa mu multilayer bolodi monga mkuwa zojambulazo palokha pamaso kukanikiza.

· Pakupanga PCB wamba, makulidwe omaliza amkuwa pazigawo zamkati amakhalabe a zojambulazo zamkuwa; Pazigawo zakunja timayika mkuwa wowonjezera wa 18-30μm panjanji panthawi yoyala.

· Mkuwa wa zigawo zakunja za matabwa a multilayer ali mu mawonekedwe a zojambula zamkuwa ndikukanizidwa pamodzi ndi prepregs kapena cores. Kuti mugwiritse ntchito ndi ma microvias mu HDI PCB, zojambulazo zamkuwa zimakhala pa RCC (resin TACHIMATA mkuwa).

Chifukwa chiyani zojambula zamkuwa zimafunikira popanga PCB?

Electronic kalasi mkuwa zojambulazo (kuyera kuposa 99,7%, makulidwe 5um-105um) ndi chimodzi mwa zinthu zofunika makampani amagetsi Kukula mofulumira makampani amagetsi zambiri, ntchito zamagetsi kalasi mkuwa zojambulazo ikukula, mankhwala ankagwiritsa ntchito. mu zowerengera zamakampani, zida zolumikizirana, zida za QA, mabatire a lithiamu-ion, makanema apawailesi yakanema, zojambulira mavidiyo, osewera ma CD, makope, telefoni, zowongolera mpweya, zamagetsi zamagalimoto, zotonthoza zamasewera.

Industrial mkuwa zojambulazoakhoza kugawidwa m'magulu awiri: adagulung'undisa mkuwa zojambulazo (RA mkuwa zojambulazo) ndi mfundo mkuwa zojambulazo (ED mkuwa zojambulazo), mmene kalendala zojambulazo mkuwa ali ductility wabwino ndi makhalidwe ena, ndi oyambirira zofewa mbale ndondomeko ntchito Copper zojambulazo, pamene electrolytic copper foil ndi mtengo wotsika popanga zojambula zamkuwa. Monga kugubuduza zojambulazo zamkuwa ndizofunikira kwambiri pa bolodi yofewa, momwemonso mawonekedwe a kalendala ya zojambula zamkuwa ndi kusintha kwamitengo pamakampani ofewa a board kumakhala ndi zotsatirapo zina.

Kodi malamulo oyambira kamangidwe kazojambula zamkuwa mu PCB ndi ati?

Kodi mukudziwa kuti matabwa osindikizidwa ndi ofala kwambiri pagulu la zamagetsi? Ndikutsimikiza kuti imodzi ilipo mu chipangizo chamagetsi chomwe mukugwiritsa ntchito pompano. Komabe, kugwiritsa ntchito zida zamagetsi izi popanda kumvetsetsa ukadaulo wawo komanso njira yopangira zinthu ndizofala. Anthu akugwiritsa ntchito zida zamagetsi ola lililonse koma sadziwa momwe zimagwirira ntchito. Kotero apa pali mbali zina zazikulu za PCB zomwe zimatchulidwa kuti zimamvetsetsa mwamsanga momwe mapepala osindikizira amagwirira ntchito.

· The kusindikizidwa dera bolodi ndi yosavuta pulasitiki matabwa ndi Kuwonjezera galasi. Chojambula chamkuwa chimagwiritsidwa ntchito pofufuza njira ndipo chimalola kutuluka kwa ndalama ndi zizindikiro mkati mwa chipangizocho. Kufufuza kwa mkuwa ndi njira yoperekera mphamvu ku zigawo zosiyanasiyana za chipangizo chamagetsi. M'malo mwa mawaya, zotsata zamkuwa zimatsogolera kuthamanga kwa ma PCB.

· PCBs akhoza kukhala wosanjikiza ndi awiri zigawo komanso. PCB imodzi yosanjikiza ndi yosavuta. Amakhala ndi zojambula zamkuwa kumbali imodzi ndipo mbali inayo ndi chipinda cha zigawo zina. Pomwe ali pa PCB yokhala ndi zigawo ziwiri, mbali zonse ziwiri zimasungidwa kuti zipangidwe zamkuwa. Zosanjikiza pawiri ndi ma PCB ovuta omwe ali ndi zovuta zamayendedwe amalipiro. Palibe zojambulazo zamkuwa zomwe zimatha kuwoloka wina ndi mnzake. Ma PCB awa amafunikira pazida zamagetsi zolemera.

Palinso zigawo ziwiri za ma solders ndi silkscreen pa PCB yamkuwa. Chigoba cha solder chimagwiritsidwa ntchito kusiyanitsa mtundu wa PCB. Pali mitundu yambiri ya PCBs kupezeka monga wobiriwira, wofiirira, wofiira, etc. Solder chigoba amatchulanso mkuwa ku zitsulo zina kumvetsa kugwirizana zovuta. Ngakhale silkscreen ndi gawo lolemba la PCB, zilembo ndi manambala osiyanasiyana amalembedwa pa silkscreen kwa wogwiritsa ntchito ndi injiniya.

Momwe mungasankhire zoyenera za zojambulazo zamkuwa mu PCB?

Monga tanena kale, muyenera kuwona njira yatsatane-tsatane kuti mumvetsetse mawonekedwe opangira a bolodi losindikizidwa. Zopangidwa ndi matabwawa zimakhala ndi zigawo zosiyanasiyana. Tiyeni timvetse izi ndi ndondomeko:

Zamkatimu:

Maziko oyambira pamwamba pa bolodi la pulasitiki lokhazikika ndi galasi ndi gawo lapansi. Gawo laling'ono ndi gawo la dielectric la pepala lomwe nthawi zambiri limapangidwa ndi utomoni wa epoxy ndi pepala lagalasi. Gawo laling'ono limapangidwa m'njira yoti litha kukwaniritsa zofunikira mwachitsanzo kutentha kwa kusintha (TG).

Lamination:

Momveka bwino kuchokera ku dzinali, lamination ndi njira yopezera zinthu zofunika monga kukulitsa kwamafuta, kumeta ubweya, ndi kutentha kwakusintha (TG). Lamination ikuchitika pansi pa kuthamanga kwambiri. Lamination ndi gawo lapansi pamodzi zimagwira ntchito yofunika kwambiri pakuyenda kwa magetsi mu PCB.