Kunzwisisa Aluminium Substrate PCB: Mhando uye Zvakanakira

MaPCB, kana kuti mabhodhi edunhu akadhindwa, zvinhu zvakakosha mumidziyo yese yemagetsi. Kuti uwedzere kunzwisisa kwako maPCB, gwaro iri richakutsanangurira mhando dzePCB aruminiyamu substrates uye zvipingamupinyi zvinowanzoonekwa mukukopa maPCB. Kana uchifarira maPCB kana zviri muchinyorwa chino, inzwa wakasununguka kuramba uchiverenga.

Chii chinoita kuti Aluminium Substrate PCBs Imire Kunze?

Pakutanga, takakurukura zvakanakira nezvakaipira zvemaPCB eceramic, tichiona kuti chimwe chakashata ndechekuti anodhura zvakanyanya uye haana kusimba. MaPCB efiberglass akajairwa haana kupisa kwakanaka, nepo maPCB eceramic akagadzikana uye anodzivirira kukanganisika munzvimbo dzinopisa zvakanyanya uye dzine hunyoro hwakawanda, asi anodhura uye anonyanya kushandiswa muzvigadzirwa zvepamusoro. Kana chigadzirwa chako chisiri chepamusoro-soro, senge mabhodhi emwenje e LED ane simba guru anoda kupisa kwakanaka asi asingadhuri, pane here chinhu chinokodzera muripo wacho?

Mhinduro ndeyekuti hongu, uye ndipo panopinda maPCB ealuminium substrate. Aluminium, sezvo iri simbi ine conductivity, ingaratidzika kunge sarudzo isinganzwisisike yezvinhu zvePCB , asi maPCB ealuminium substrate ane zvikamu zvitatu: copper foil, insulation layer, uye metal aluminum layer. Sezvo paine insulation layer, zvimwe zvinhu kunze kwealuminum zvinogona kushandiswa here kune simbi layer? Zvinhu zvakaita semhangura, simbi isina ngura, simbi, silicon steel, nezvimwewo? Pakusarudza simbi substrate, zvinhu zvakaita se thermal expansion coefficient, thermal conductivity, simba, kuomarara, huremu, mamiriro epamusoro, uye mutengo zvinofanirwa kufungwa nezvazvo.

Kazhinji, tichifunga nezve mutengo uye hunyanzvi hwekuita, aluminium isarudzo yakanaka. Sarudzo dzakajairika dzemapuranga ealuminium dzinosanganisira 6061, 5052, 1060, nezvimwewo. Kana pane zvinodiwa zvakakwirira zvekupisa conductivity, mechanical performance, magetsi ekushanda, uye zvimwe zvinhu zvakakosha, mhangura, simbi isina tsvina, simbi, uye silicon simbi inogona kushandiswawo.

Inowanzo muzvigadzirwa zvemwenje zve LED, aluminium substrate PCBs ine mativi maviri: rimwe divi chena rekutengesa mapini e LED, uye rimwe divi ndeyakasikwa aruminiyamu ruvara, kazhinji yakaputirwa ne thermal paste kubata iyo inopisa-inobata chikamu. Iwo anonyanya kushandiswa mu LED luminaires, maodhiyo emidziyo, magetsi emagetsi, nezvimwe, ine mukana mukuru kuve kukurumidza kupisa conduction uye yakanakisa kupisa kupisa kuita.

Zvichienzaniswa neFR -4 yechinyakare , maPCB ealuminium substrate anogona kuderedza kupisa, zvichipa kupisa kwakanaka; zvichienzaniswa neceramic substrates, ane hunhu hwakanaka hwemakanika.

 Mhando dzePCB Aluminium Substrates

1. Zvigadziko zveAruminiyamu Zvinochinjika : Chimwe chezvinhu zvitsva zviri muIMS idielectrics dzinochinjika. Zvinhu izvi zvinopa insulation yemagetsi yakanaka, kuchinjika, uye thermal conductivity. Kana zvikashandiswa pazvinhu zvakaita se5754 kana zvakafanana nearuminiyamu inochinjika, zvinogona kugadzirwa kuti zvive nemaumbirwo akasiyana-siyana, zvichibvisa kudiwa kwezvishandiso zvinodhura, tambo, uye zvinobatanidza. Kunyangwe zvinhu izvi zvichichinjika, zvakagadzirwa kuti zvikotamirane uye zvirambe zviri panzvimbo yazvo.

2. Zvikamu zveAruminiyamu zveHybrid : Muchimiro cheIMS che "hybrid", zvinhu zvisingashandise kupisa zvinogadziriswa zvakazvimiririra uye zvobva zvabatanidzwa kune substrate yearuminiyamu nezvinhu zvinoshandisa kupisa. Chimiro chakajairika chine zvikamu zviviri kana zvina zvezvikamu zvakagadzirwa kubva kuFR-4 yechinyakare, izvo zvinozobatanidzwa kune base yearuminiyamu ne dielectric inofambisa kupisa. Izvi zvinogona kubatsira nekupisa, kunatsiridza kuomarara, uye kushanda sekudzivirira. Zvimwe zvakanakira zvinosanganisira:

• • Mutengo wakaderera pane kugadzira zvese zvinopisa.
  • Zvirinani kupisa kwekuita pane zvakajairwa FR-4 zvigadzirwa.
  • Kubviswa kwemasinki ekupisa anodhura uye matanho egungano anoenderana.
  • Inokodzera RF zvikumbiro zvinoda PTFE pamusoro pezvikamu zveRF kurasikirwa maitiro.
  • Kushandiswa kwezvikamu zvemahwindo mualuminium kuti zvigadzirire kuburikidza ne-gole components, zvichibvumira zvibatanidza uye tambo kuti zvipfuure nepakati pebhodhi paunenge uchitengesa makona ekutenderera kuti ugadzire chisimbiso, pasina kudiwa kwewasheri anokosha kana mamwe maadapter anodhura.

3. Zvikamu zveAruminiyamu zveMulti-layer : Mumusika wemagetsi anoshanda zvakanyanya, maPCB eIMS ane layer akawanda anogadzirwa kubva muzvikamu zvakasiyana zve thermal dielectric. Zvivakwa izvi zvine layer imwe kana kupfuura yecircuit yakaiswa mu dielectric, ine ma blind vias anoshandiswa se thermal vias kana nzira dzesignal. Kunyange zvazvo madhizaini e single-layer achidhura uye asingashande zvakanaka pakufambisa kupisa, anopa mhinduro iri nyore uye inoshanda yekupisa kune madhizaini akaomarara.

4. Zvikamu zveAruminiyamu Zvinopinda Nemaburi : Muzvivakwa zvakaomarara, jira rearuminiyamu rinogona kuumba "musimboti" wezvivakwa zvekupisa zvine maburi akawanda. Pamberi pekuiswa kwelamination, aruminiyamu inoiswa kare uye inozadzwa ne dielectric. Zvinhu zvinopisa kana zvikamu zvinogona kusungirirwa kumativi ese earuminiyamu uchishandisa laminate inonamira inopisa. Kana yaiswa laminated, chikamu chapera chakafanana ne substrate yearuminiyamu ine maburi akawanda yakaboorwa kuburikidza nearuminiyamu. Maburi anoputirwa anopfuura nepakati pemaburi ari muaruminiyamu kuti achengetedze insulation yemagetsi. Neimwe nzira, cores dzemhangura dzinogona kubvumira kubatana kwemagetsi zvakananga pamwe nemaburi anoputirwa.

Zvakanakira zvePCB Aluminium Substrates

Pamusoro pekuita kwayo kwakanakisa kupisa kupisa, aluminium substrate PCB ine zvinotevera zvakanakira:

• Kutevedzera RoHS zvakatipoteredza zvinodiwa.
• Yakanyanya kukodzera kune SMT maitiro.
• Yakakwirira ikozvino-kutakura simba.
• Kunyatsobata kupararira kwekupisa mukugadzira dhizaini, kudzikisa tembiricha yekushandisa module, kuwedzera hupenyu hwesevhisi, kuwedzera simba remagetsi, nekuvandudza kuvimbika.
• Kuderedzwa mukuungana kwemasinki ekupisa uye mamwe mahardware (kusanganisira thermal interface zvinhu), kuderera kwehukuru hwechigadzirwa, kuderedza hardware uye mutengo wegungano, uye optimize musanganiswa wemaseketi emagetsi uye maseketi ekudzora.
• Kutsiviwa kweiyo isina kusimba ceramic substrates kuti ive nani mechaniki kusimba.

Kuenzaniswa neakajairwa FR-4 mabhodhi, aluminium substrate PCB ine mukana wakakura pakuti inogona kutakura yakakwira ikozvino. Kufanana neFR-4, maseketi edunhu anoshandisa foil yemhangura semakondakita ekubatanidza. Kuenzaniswa neyechinyakare FR-4, ine ukobvu hwakafanana uye upamhi hwemutsara, aluminium substrate PCB inogona kutakura yakakwira ikozvino.

Iyo yakakosha tekinoroji yealuminium substrate PCB iri mune yepakati insulation layer zvinhu, iyo inonyanya kushanda mabasa ekubatanidza, insulation, uye thermal conduction. Iyo insulation layer yealuminium substrate PCB ndiyo yakakura yekupisa inodzivirira muchimiro chemagetsi module. Iyo iri nani iyo yekupisa yekupisa kweiyo insulation layer, iyo inonyanya kukonzeresa kupararira kwekupisa kunogadzirwa panguva yekushanda kwechishandiso, izvo zvinozoita kuti kudzikisa tembiricha yekushandisa yechishandiso, kuwana yakakwira simba remu module, kuderedza saizi, kuwedzera hupenyu, uye kuwedzera simba rekubuda. Paunenge uchisangana nezvinodiwa zveyakanaka kupisa conductivity, inofanirwawo kunge iine yakakwira voltage insulation kugona.

Misiyano pakati peAluminium Base neFR-4 Board

Kupisa Kupisa

Musiyano mukuru pakati pealuminium-based copper-clad laminate (CCL) uye yakajairwa FR-4 CCL iri mukupisa kwavo kupisa. Semuenzaniso, kana zvichienzaniswa ne1.5mm-yakakora FR-4 CCL, kupisa kwekupisa kwealuminium-based CCL ndeye 20-22 ℃ yekutanga uye 1.0-2.0 ℃ yekupedzisira, iyo yakaderera zvakanyanya.

Coefficient of Thermal Kuwedzera

Kazhinji, FR-4 mabhodhi anotambura nenyaya dzekuwedzera kupisa, uko tembiricha yakakwira inogona kukonzera shanduko mukukora uye kupfava, kunyanya munzira yekukora, zvichikanganisa kunaka kwesimbi-yakaputirwa maburi uye maseketi. Izvi zvinonyanya kukonzerwa neakasiyana macoefficients ekuwedzera kwemafuta muhukobvu hwezvinhu: mhangura ine coefficient ye17 × 10 ^ -6 cm/cm℃, nepo FR-4 board base material iri 110 × 10 ^ -6 cm/cm. ℃, iyo inogona kutungamira zviri nyore kumafuta ekuwedzera mhedzisiro. Iyo coefficient yekuwedzera kwekupisa kwealuminium-based board ndeye 50 × 10 ^ -6 cm / cm℃, idiki pane iyo yea general FR-4 mabhodhi, uye padyo neiyo yemhangura foil. Izvi zvinobatsira kuve nechokwadi chemhando uye kuvimbika kwemapuranga edunhu akadhindwa.

Main Applications

FR-4 mabhodhi akakodzera dhizaini yedunhu dhizaini uye zvakajairwa zvigadzirwa zvemagetsi. Aluminium-based boards anokodzera maseketi ane zvakakosha zvinodiwa, senge gobvu firimu hybrid integrated circuits, kupisa kupisa kwemagetsi maseketi, kutonhora kwezvikamu mumaseketi, mahombe-ma substrates ayo eceramic substrates asingakwanisi kubata, uye maseketi uko kunyura kwakajairika hakugone kugadzirisa. nyaya dzekuvimbika.

Kubata

Aluminium-based boards ane yakakwirira mechanical simba uye kuoma, iyo yakakwirira kune FR-4 mabhodhi. Nokudaro, mapuranga makuru akadhindwa anogona kugadzirwa paaluminium-based boards, uye zvikamu zvinorema zvinogona kuiswa pa substrates dzakadaro.

Kuita kweMagetsi

Kuenzaniswa neFR-4 mabhodhi, aluminium-yakavakirwa mabhodhi ane yakakwira yekupisa conductivity, zvichiita kuti kuwedzere kukuru kweiyo ikozvino-kutakura kugona kwevanotungamira. Izvi zvinoratidza kupisa kwepamusoro kwealuminium-based board. Kupisa kwekupisa kwealuminium-based board kune hukama nehupamhi hweiyo insulation layer uye thermal conductivity. Mitsetse yekudzivirira yakatetepa inoguma nekukwirira kwekushisa kwealuminium-based board (asi yakaderera inomira voltage performance). Kuti uve nechokwadi chekushanda kwemaseketi emagetsi, zvimwe zvinhu muzvigadzirwa zvemagetsi zvinoda kudzivirira magetsi emagetsi uye kupindira. Aluminium-yakavakirwa mabhodhi anogona kuita seanodzivirira mahwendefa kudzivirira mafungu emagetsi.

Insulation Performance

Mumamiriro ezvinhu akajairwa, kuparara kwemagetsi ealuminium-based board kunotemerwa nekukora kweiyo insulation layer, ine voltage yekuputsa kazhinji yakatenderedza 500V. Kana iwe uchida kuyedza kuparara kwemagetsi e LED fluorescent rambi aluminium-based board, iwe unongoda kuita yakakwira-voltage bvunzo pane yekuisa chiteshi dzimba. Iyo UL uye CE certification values ​​inofanira kunge iri 2500V, uye iyo 3C certification inofanira kunge yakatenderedza 3750V.