Metal Core PCB yana nufin ainihin (tushe) abu don PCB shine karfe, ba FR4/CEM1-3 na yau da kullun ba, da dai sauransu kuma a halin yanzu mafi yawan ƙarfe da ake amfani da shi don masana'anta MCPCB sune Aluminum, Copper da ƙarfe gami. Aluminum yana da kyakkyawar canja wurin zafi da ikon watsawa, amma duk da haka mai rahusa; jan karfe yana da mafi kyawun aiki amma in mun gwada da tsada, kuma ana iya raba karfe zuwa karfe na yau da kullun da bakin karfe. Ya fi tsauri fiye da aluminium da jan ƙarfe, amma ƙarancin zafin jiki yana ƙasa da su kuma. Mutane za su zaɓi nasu tushe / ainihin kayan bisa ga aikace-aikacen su daban-daban.

Gabaɗaya magana, aluminum shine mafi kyawun zaɓi na tattalin arziƙi idan aka yi la'akari da ƙimar zafi, tsauri, da farashi. Saboda haka, tushen / ainihin kayan na al'ada Metal Core PCB an yi su da aluminum. A cikin kamfaninmu, idan ba buƙatu na musamman ba, ko bayanin kula, maƙasudin ƙarfe na ƙarfe zai zama aluminum, sannan MCPCB yana nufin Aluminum Core PCB. Idan kana buƙatar Copper Core PCB, Steel Core PCB, ko Bakin Karfe core PCB, ya kamata ka ƙara bayanin kula na musamman a zane.

Wani lokaci mutane za su yi amfani da gajarta "MCPCB", maimakon cikakken suna kamar Metal Core PCB, ko Metal Core Printed Circuit Board. Hakanan ana amfani da kalmar daban-daban tana nufin ainihin/base, don haka zaku ga sunan daban na Metal Core PCB, kamar su.  Metal PCB, Metal Base PCB, Metal Support PCB, Metal Clad PCB da Metal Core Board da sauransu.

Ana amfani da MCPCBs maimakon FR4 na gargajiya ko CEM3 PCBs saboda ikon iya watsar da zafi da kyau daga abubuwan da aka gyara. Ana samun wannan ta amfani da Layer Dielectric Dielectric Layer na Thermally Conductive.

Babban bambanci tsakanin hukumar FR4 da MCPCB shine kayan aikin dielectric na thermal conductivity a cikin MCPCB. Wannan yana aiki azaman gada mai zafi tsakanin abubuwan IC da farantin goyan bayan ƙarfe. Ana gudanar da zafi daga kunshin ta hanyar ƙarfe na ƙarfe zuwa ƙarin zafi mai zafi. A kan allon FR4 zafi yana tsayawa idan ba'a canza shi ta hanyar zafi mai zafi ba. Dangane da gwajin dakin gwaje-gwaje MCPCB tare da LED 1W ya kasance kusa da yanayin 25C, yayin da wannan 1W LED akan allon FR4 ya kai 12C akan yanayi. LED PCB kullum ana samar da Aluminum core, amma wani lokacin karfe core PCB kuma a yi amfani.

Abubuwan da aka bayar na MCPCB

1.zafin zafi

Wasu LEDs suna bazuwa tsakanin 2-5W na zafi da kasawa suna faruwa lokacin da zafi daga LED ba a cire shi da kyau ba; an rage fitowar hasken LED tare da lalata lokacin da zafi ya kasance mai ƙarfi a cikin kunshin LED. Manufar MCPCB shine don cire zafi da kyau daga duk abubuwan IC (ba LEDs kawai ba). Tushen aluminium da Layer dielectric mai sarrafa zafin rana suna aiki azaman gadoji tsakanin IC's da nutsewar zafi. Ana ɗora matattarar zafi ɗaya kai tsaye zuwa tushen aluminium wanda ke kawar da buƙatun dumbin zafi a saman abubuwan da aka ɗora.

2. thermal fadada

Ƙaddamarwar thermal da ƙaddamarwa shine yanayin gama gari na abu, CTE daban-daban ya bambanta a cikin haɓakar thermal. Kamar yadda nasa halayen, aluminum da jan karfe suna da ci gaba na musamman fiye da FR4 na al'ada, ƙaddamarwar thermal na iya zama 0.8 ~ 3.0 W / c.K.

3. kwanciyar hankali girma

A bayyane yake cewa girman allon da'irar da aka buga ta karfe ya fi kwanciyar hankali fiye da kayan hanawa. Canjin girman 2.5 ~ 3.0% lokacin da Aluminum PCB da aluminum sandwich panels aka mai tsanani daga 30 ℃ zuwa 140 ~ 150 ℃.


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