Hlau Core PCB txhais tau hais tias cov tub ntxhais (hauv paus) cov khoom siv rau PCB yog cov hlau, tsis yog ib txwm FR4 / CEM1-3, thiab lwm yam. thiab tam sim no cov hlau feem ntau siv rau MCPCB cov chaw tsim khoom yog Aluminium, Copper thiab steel alloy. Aluminium muaj qhov zoo ntawm kev xa tawm cua sov thiab dissipation peev xwm, tab sis tseem pheej yig dua; tooj liab muaj qhov ua tau zoo dua tab sis kuj kim dua, thiab cov hlau tuaj yeem muab faib ua cov hlau ib txwm thiab cov hlau tsis muaj steel. Nws nruj dua li txhuas thiab tooj liab, tab sis thermal conductivity qis dua lawv thiab. Cov neeg yuav xaiv lawv tus kheej lub hauv paus / cov khoom tseem ceeb raws li lawv daim ntawv thov sib txawv.

Feem ntau hais lus, aluminium yog qhov kev xaiv nyiaj txiag tshaj plaws uas xav txog thermal conductivity, nruj, thiab tus nqi. Yog li ntawd, lub hauv paus / core khoom ntawm ib txwm Hlau Core PCB yog ua los ntawm txhuas. Nyob rau hauv peb lub tuam txhab, yog hais tias tsis tshwj xeeb thov, los yog sau ntawv, cov hlau core xa mus yuav txhuas, ces MCPCB yuav txhais tau tias Aluminium Core PCB. Yog tias koj xav tau Copper Core PCB, Steel Core PCB, lossis Stainless hlau tub ntxhais PCB, koj yuav tsum ntxiv cov ntawv tshwj xeeb hauv kev kos duab.

Qee zaum tib neeg yuav siv cov ntawv luv "MCPCB", tsis yog lub npe tag nrho li Hlau Core PCB, lossis Hlau Core Printed Circuit Board. Thiab kuj siv cov lus sib txawv hais txog cov tub ntxhais / puag, yog li koj tseem yuav pom ntau lub npe ntawm Hlau Core PCB, xws li  Hlau PCB, Hlau Base PCB, Hlau Backed PCB, Hlau Clad PCB thiab Hlau Core Board thiab lwm yam.

MCPCBs yog siv los hloov cov tsoos FR4 lossis CEM3 PCBs vim tias muaj peev xwm ua kom muaj cua sov kom deb ntawm cov khoom. Qhov no yog ua tiav los ntawm kev siv Thermally Conductive Dielectric Layer.

Qhov sib txawv tseem ceeb ntawm FR4 board thiab MCPCB yog cov khoom siv thermal conductivity dielectric hauv MCPCB. Qhov no ua raws li tus choj thermal ntawm IC Cheebtsam thiab hlau thaub qab phaj. Thaum tshav kub kub yog ua los ntawm lub pob los ntawm cov tub ntxhais hlau mus rau lub dab dej ntxiv. Ntawm lub rooj tsavxwm FR4 lub tshav kub tseem nyob twj ywm yog tias tsis hloov los ntawm cov tshuaj pleev ib ce. Raws li kev kuaj sim MCPCB nrog 1W LED tseem nyob ze ntawm qhov chaw ntawm 25C, thaum tib lub 1W LED ntawm lub rooj tsavxwm FR4 mus txog 12C tshaj ambient. LED PCB ib txwm raug tsim nrog Aluminium core, tab sis qee zaum steel core PCB kuj raug siv.

Qhov zoo ntawm MCPCB

1. Thaum tshav kub kub dissipation

Qee cov LEDs dissipate ntawm 2-5W ntawm tshav kub thiab tsis ua hauj lwm tshwm sim thaum tshav kub los ntawm LED tsis raug tshem tawm; LED lub teeb tso zis raug txo nrog rau kev degradation thaum tshav kub nyob twj ywm nyob rau hauv lub pob LED. Lub hom phiaj ntawm MCPCB yog kom tshem tawm cov cua sov los ntawm tag nrho cov tshuaj pleev ib ce (tsis yog LEDs xwb). Aluminium puag thiab thermally conductive dielectric txheej ua raws li txuas hniav ntawm IC thiab lub dab dej kub. Ib lub dab dej kub ib leeg yog mounted ncaj qha mus rau aluminium puag tshem tawm qhov xav tau rau ntau lub dab dej kub nyob rau sab saum toj ntawm cov khoom siv.

2. thermal expansion

Thermal expansion thiab contraction yog cov xwm txheej ntawm cov khoom, CTE sib txawv ntawm thermal expansion. Raws li nws tus kheej cov yam ntxwv, txhuas thiab tooj liab muaj qhov tshwj xeeb ua ntej tshaj li ib txwm FR4, thermal conductivity tuaj yeem yog 0.8 ~ 3.0 W / c.K.

3. seem stability

Nws yog qhov tseeb tias qhov loj ntawm cov hlau-raws li cov ntawv luam tawm Circuit Board ruaj khov dua li cov ntaub ntawv insulating. Kev hloov pauv loj ntawm 2.5 ~ 3.0% thaum Aluminium PCB thiab aluminium sandwich panels tau rhuab los ntawm 30 ℃ mus rau 140 ~ 150 ℃.


Txais tos tuaj xyuas Qhov Zoo Tshaj Plaws Technology hlau core pcb chaw tsim tshuaj paus.

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