Tsis ntev los no, qee cov phooj ywg feem ntau nug tias qhov ua tau zoo yog qhov thermal conductivity ntawm aluminium substrate, thiab lwm yam, qee cov lus nug ntsig txog, cov hauv qab no ua raws: hlau tub ntxhais pcb chaw tsim tshuaj paus kom nkag siab:

Lub thermal conductivity ntawm aluminium substrate yog ib qho ntawm cov cim tseem ceeb los soj ntsuam qhov zoo ntawm txhuas substrate.Qhov lwm ob qho tseem ceeb yog cov thermal tiv thaiv thiab siab tsis kam ntawm aluminium substrate.Lub tam sim no, cov thermal conductivity ntawm aluminium substrate ntawm kev ua lag luam yog feem ntau 2.00.1.Qhov thermal conductivity ntawm aluminium substrate tuaj yeem ntsuas los ntawm cov twj paj nruag, uas yuav cuam tshuam ncaj qha rau tus nqi ntawm txhuas cov txhuas substrate.Yog dav dav, qhov siab dua thermal conductivity ntawm aluminium substrate, tus nqi ntau ntawm aluminium substrate. , peb tsis tuaj yeem tsuas saib lub thermal conductivity ntawm aluminium substrate.Qhov thermal conductivity, thermal resistance thiab compressive khoom ntawm aluminium substrate txiav txim siab cov khoom ntawm txhuas substrate.Nws tsis yog txiav txim siab los ntawm ib qho kev cuam tshuam.

Feem ntau hais lus, lub thermal conductivity ntawm aluminium substrate yog tsau thiab yuav tsis hloov nrog kev hloov ntawm lwm yam.Qhov thermal conductivity yog feem ntau txiav txim siab los ntawm cov ntaub ntawv raw ntawm aluminium substrate.Yog hais tias siab thermal conductivity cov ntaub ntawv xws li tooj liab thiab nyiaj ntxiv, thermal conductivity ntawm aluminium substrate cov ntaub ntawv yuav yeej ntau dua.Hauv cov khoom siv hluav taws xob yog qhov yooj yim ntawm lub cev, uas yog qhov ruaj khov ntawm cov khoom, thiab nws cov thermal conductivity ywj siab ntawm tuab lossis thaj chaw.

Tam sim no, ceramics, tooj liab, thiab lwm yam yog feem ntau ua tus ua haujlwm.Txawm li cas los xij, vim muaj teeb meem nqi, feem ntau cov khoom siv txhuas siv ntau hauv cov khoom lag luam, thiab cov khoom sib xws thermal conductivity ntawm txhuas substrates yog ib qho parameter ntawm kev txhawj xeeb rau txhua tus.Higher thermal conductivity yog ib qho ntawm txoj kev pom ntawm kev ua haujlwm zoo dua.Txhais khoom siv substrate yog cov khoom siv tooj hlau-tooj ​​liab-aluminium substrate nrog cov ua haujlwm zoo thermal, hluav taws xob rwb thaiv tsev thiab kev ua haujlwm. Lub thermal conductivity ntawm aluminium substrates feem ntau yog nruab nrab ntawm 1.0, 1.5 thiab 2.0, nyob ntawm seb qhov xav tau ntawm cov khoom muag.

Qhov saum toj no yog hais txog lub thermal conductivity ntawm aluminium substrate, Kuv vam tias koj yuav nyiam; Peb yog cov cov tub ntxhais hlau pcb, txais tos tham sab laj ~