PCB aluminium substrate muaj ntau lub npe, aluminium cladding, aluminium PCB, hlau clad luam Circuit Court board (MCPCB), thermally conductive PCB, thiab lwm yam. Qhov zoo ntawm PCB aluminium substrate yog tias cov cua kub dissipation zoo dua li tus qauv FR-4 qauv, thiab cov dielectric siv feem ntau Nws yog 5 mus rau 10 npaug ntawm cov thermal conductivity ntawm cov pa epoxy iav, thiab qhov ntsuas kub hloov ntawm ib feem kaum ntawm cov thickness yog ntau npaum li cov tsoos nruj PCB. Cia peb nkag siab txog hom PCB aluminium substrates hauv qab no.
1. Yooj yim aluminium substrate
Ib qho kev txhim kho tshiab tshaj plaws hauv IMS cov ntaub ntawv yog hloov tau yooj yim dielectrics. Cov ntaub ntawv no tuaj yeem muab cov hluav taws xob rwb thaiv tsev zoo heev, ua kom yooj yim thiab thermal conductivity. Thaum ua ntawv thov rau cov ntaub ntawv hloov pauv tau yooj yim xws li 5754 lossis cov zoo li, cov khoom tuaj yeem tsim kom ua tiav ntau yam duab thiab cov ces kaum, uas tuaj yeem tshem tawm cov khoom siv kho kim, cables thiab connectors. Txawm hais tias cov ntaub ntawv no hloov tau, lawv tau tsim los khoov rau hauv qhov chaw thiab nyob twj ywm hauv qhov chaw.
2. Mixed aluminium aluminium substrate
Hauv "hybrid" IMS qauv, "cov khoom sib txuas" ntawm cov khoom tsis muaj cua sov yog ua tiav ntawm nws tus kheej, thiab tom qab ntawd Amitron Hybrid IMS PCBs raug khi rau aluminium substrate nrog cov ntaub ntawv thermal. Cov qauv siv ntau tshaj plaws yog 2-txheej lossis 4-txheej subassembly ua los ntawm cov tsoos FR-4, uas tuaj yeem txuas rau aluminium substrate nrog thermoelectric los pab kom cov cua sov, ua kom nruj, thiab ua raws li daim ntaub thaiv. Lwm cov txiaj ntsig suav nrog:
1. Tus nqi qis dua txhua yam khoom siv thermal conductive.
2. Muab kev ua haujlwm thermal zoo dua li cov khoom lag luam FR-4.
3. Cov dab dej kub uas kim heev thiab cov kauj ruam sib dhos tuaj yeem raug tshem tawm.
4. Nws tuaj yeem siv rau hauv RF daim ntaub ntawv uas yuav tsum tau RF poob yam ntxwv ntawm PTFE nto txheej.
5. Siv cov qhov rais tivthaiv hauv aluminium kom haum raws li cov khoom sib txuas, uas tso cai rau cov khoom sib txuas thiab cov cables kom dhau lub connector los ntawm cov substrate thaum welding rounded fab los tsim ib lub foob tsis tas yuav tsum tau tshwj xeeb gaskets los yog lwm yam khoom kim heev adapters.
Peb, multilayer aluminium substrate
Hauv kev ua lag luam muaj txiaj ntsig zoo, ntau txheej IMS PCBs yog ua los ntawm ntau txheej thermally conductive dielectrics. Cov qauv no muaj ib lossis ntau txheej txheej ntawm cov kab hluav taws xob faus rau hauv dielectric, thiab qhov muag tsis pom vias yog siv los ua thermal vias lossis cov teeb liab. Txawm hais tias cov txheej txheem ib txheej yog kim dua thiab tsis tshua muaj txiaj ntsig los hloov cov cua sov, lawv muab cov cua txias kom yooj yim thiab siv tau rau cov qauv tsim ntau dua.
Plaub, dhau-qhov aluminium substrate
Hauv cov txheej txheem nyuaj tshaj plaws, txheej txheej ntawm txhuas tuaj yeem tsim "core" ntawm cov txheej txheem thermal ntau. Ua ntej lamination, aluminium yog electroplated thiab sau nrog dielectric ua ntej. Cov khoom siv hluav taws xob lossis cov khoom sib txuas tuaj yeem laminated rau ob sab ntawm txhuas siv cov khoom siv thermal. Thaum laminated, lub rooj sib txoos ua tiav zoo ib yam li cov txheej txheem multilayer aluminium substrate los ntawm drilling. Plated los ntawm qhov hla dhau qhov khoob hauv cov txhuas kom muaj hluav taws xob rwb thaiv tsev. Xwb, cov tub ntxhais tooj liab tuaj yeem tso cai ncaj qha hluav taws xob sib txuas thiab insulating vias.