Aluminium PCB Mhando

ziviso

MaPCB eAluminium, anozivikanwawo seAluminium Clad, Metal Clad PCBs (MCPCB), Insulated Metal Substrate (IMS), kana kuti Thermally Conductive PCBs, mabhodhi edunhu akadhindwa akagadzirirwa kushanda zvakanaka kwekupisa. Kubva pakugadzirwa kwawo muma1970, mashandisirwo awo akawedzera zvakanyanya, kunyanya mumwenje we LED , magetsi emagetsi, uye masisitimu emotokari. Mabhodhi aya anozivikanwa nekupararira kwekupisa kunoshanda zvakanaka, kuderedza kupindira kwemagetsi (EMI), uye kugara kwenguva refu kwemakanika, zvichiita kuti ave akakosha kumidziyo yemazuva ano yemagetsi.

Ichi chinyorwa chinotarisa pakurongeka kwealuminium PCB nemhando yezvinhu, maitiro avo ekuita, uye kuti kusarudzwa kwezvinhu kunokanganisa sei chigadzirwa chekupedzisira.

Kuita kweAluminium PCBs: A Detailed Analysis

Thermal Dissipation

Aluminium PCBs inopa yakanyanya kupisa kupisa kana ichienzaniswa neyakajairwa FR4 mabhodhi, ichivaita sarudzo inosarudzika yezvishandiso uko kunoshanda kupisa kwakakosha. Iko kugona kwePCB kuendesa kupisa kure kubva kune zvinonzwisisika zvikamu kunovimbisa kushanda kwakagadzikana uye kunoderedza njodzi yekutadza kupisa. Musiyano wakakosha mukupikiswa kwekupisa pakati pemhando mbiri idzi dzePCB unoratidza izvi:

• FR4 PCB: Inoratidza kupikisa kwekushisa kwe20-22 ° C pawatt kwehupamhi hwe 1.5 mm.
• Aluminium PCB: Inowana 1–2 ° C pawatt pahukobvu hwakafanana.

Uyu mutsauko wakakura unosimbisa kugona kwealuminium PCBs kutamisa kupisa zvakanyanya, kuvandudza mashandiro uye kuvimbika kwemagetsi emagetsi. Somugumisiro, ivo vanonyanya kukosha mu LED modules, magetsi ekushandura, uye mamwe maitiro epamusoro-zvino apo kupisa kunofanira kudzorwa kudzivirira kukanganisa kwekushanda uye kukanganisa kwechikamu.

Thermal Kuwedzera uye Kugadzikana

Dambudziko rakakosha mune zvemagetsi kutonga kuwedzera kwemafuta, uko zvinhu zvinowedzera kana chibvumirano pasi pekusiyana kwekushisa. Aluminium PCBs anobatsirwa kubva mukuenzanisa coefficients yekuwedzera kwekupisa (CTE) pakati pezvinhu zvavo zvakakosha zvinoitisa:

• aruminiyamuCTE ye22 ppm/°C
• mhanguraCTE ye18 ppm/°C

Kufanana uku kunoderedza kushushikana kwemagetsi pakati pematanho panguva yekudziya uye kutonhora. Mune echinyakare FR4 mabhodhi, mutsauko muCTE kukosha pakati pemhangura uye insulating zvinhu zvinogona kukonzera warping kana delamination, zvichikonzera kutadza kwedunhu. Nekudaro, aluminium PCBs inoratidza kugadzikana kwakawedzera, zvichiita kuti ive yakasimba uye yakavimbika pasi pekunetseka kwekupisa.

Iyi mukana wakakosha mumotokari, maindasitiri, uye aerospace application, uko zvikamu zvinoratidzwa kune kazhinji uye nekukurumidza kuchinja kwekushisa. Masisitimu epamusoro-soro ane stringent thermal zvinodiwa anobatsirwa zvakanyanya kubva paunhu uhwu, sezvo achivimbisa kuvimbika kwekushanda kwenguva refu.

Dimensional Kugadzikana

Dimensional kugadzikana chinhu chakakosha mukuona kuenderana kwemakanika uye kushanda kwemagetsi mukati mekusiyana kwemamiriro ekunze. Aluminium PCBs anoratidza kugadzikana kwepamusoro kunyangwe pasi pekushisa kwakanyanya. Semuyenzaniso:

• Kana yapiswa kubva pa30°C kusvika pa140°C, maPCB ealuminium anongowedzera ne2.5% kusvika pa3%.

Iyi diki dimensional shanduko inovimbisa kuti dunhu rinoteedzera uye zvikamu zvinoramba zvakabatana, kudzivirira nyaya dzekubatanidza. Izvi zvakatsiga maitiro akakosha mune chaiyo zvemagetsi uye sensor modules, uko kunyangwe kudiki kudiki shanduko inogona kukonzera kusarongeka kana kuderera kwechiratidzo. Aluminium PCBs, saka, inokunda mumisheni-yakakosha maapplication uko kuvimbika uye nemazvo zvisingagone kutaurirana.

Electromagnetic Interference (EMI) Shielding

Aluminium PCBs inongopa yakasikwa electromagnetic interference (EMI) kudzivirira nekuda kwesimbi substrate. EMI inogona kukanganisa magetsi anonzwa, kushatisa mhando yechiratidzo, uye kukonzera kurasikirwa kwedata, zvichiita kuti EMI manejimendi ave pamberi mukushandisa kwakawanda.

Iyo metallic aluminium layer inoshanda sendege yepasi, ichibatsira kubata uye kuve neakarasika emagetsi masaini. Ichi chimiro chinoita aluminium PCBs yakanakira:

• Magetsi emagetsi: Iko makwikwi akakwira anogona kuburitsa akakosha emagetsi ruzha.
• Zvishandiso zvekukurukurirana: Zvakadai seRF modules, uko kutendeseka kwechiratidzo kwakakosha pakushanda kunoshanda.

Iyo yakabatanidzwa EMI kudzivirira inoderedza kudiwa kwezvimwe zvidziviriro zvekudzivirira, kurerutsa dhizaini uye kudzika hukuru uye huremu hwechishandiso. Kugona uku kunovimbisa kuti kufambisa kwedata kunoramba kwakavimbika uye kusingapindire, zvichiita kuti aluminium PCBs ive yakakosha mumasevhisi ekutaurirana asina waya, zvishandiso zvetiweki, uye masaini ekugadzirisa masaini.

Kazhinji, maPCB ealuminium anopa zvakanakira zvakakosha pakushanda zvakanaka mukutarisira kupisa, kugadzikana kwezvikamu, uye kudzivirira kweEMI, zvichiita kuti zvive zvakakosha mukushanda kwepamusoro uye nemazvo. Kugona kwavo kuchengetedza kuvimbika kwechimiro nemagetsi mumamiriro ezvinhu akaoma kunoita kuti vavimbike uye vararame kwenguva refu mumaindasitiri akadai semotokari, ndege, mwenje we LED, uye otomatiki yeindasitiri.

Kukamurwa kweAluminium PCB neChinhu Rudzi

1. Standard Aluminium PCBs

Yakajairwa aluminium PCBs anoshandisa epoxy girazi faibha pre-preg seye dielectric zvinhu. Ichi chimiro chinobvumira kuenzana pakati pekutonga kwekupisa uye kushandiswa kwemagetsi, zvichiita kuti ive yakakodzera kushandiswa kwakajairwa. Iko kuchinjika ukobvu hweiyo dielectric layer inowedzera kuwedzera kugona kwavo, kuve nechokwadi kuti vanosangana nemhando yekugadzira uye kuita zvinodiwa. Nekuda kwekureruka kwavo dhizaini uye kuwanikwa kwezvinhu, mabhodhi aya anowanzo shandiswa mumashandisirwo apo zvinodikanwa zvekupisa zviri pakati nepakati asi zvinoda kuvimbika kwekupisa kupisa.

Aya maPCB anowanzo kuwanikwa mumasisitimu ekuvhenekesa eLED uye magetsi emagetsi akaderera-simba. Kugona kwavo kubata zvine mwero kupisa mitoro inovimbisa kuenderera mberi kwekushanda pasina kukosha kwekupisa kwekupisa. Yakakurumbira mumagadzirirwo emagetsi emumba uye zvigadziriso zviri nyore, mabhodhi aya anosanganisa kugona nekusimba, achiaita sarudzo inoyevedza yevagadziri vari kutsvaga kuendesa zvigadzirwa zvinodhura pasina kukanganisa kuita kana kuvimbika.

2. High Thermal-Conductivity Aluminium PCBs

High thermal-conductivity aluminium PCBs inoratidzira epoxy resin dielectric layer inogonesa kupisa kwepamusoro. Iyi yakasarudzika kuumbwa inobvumira maPCB aya kuti abvise kupisa zvinobudirira kupfuura mabhodhi akajairwa, kuve nechokwadi kuti zvinhu zvine hunyoro zvadzivirirwa kubva mukupisa kwekushushikana. Aya maPCB akagadzirirwa mamiriro ezvinhu uko kutonga kwekupisa kwakakosha, kuve nechokwadi chekuti michina inogona kushanda nguva dzose pasi pemitoro yakakura pasina kupisa.

Kushandisa kwavo kwakakosha mumagetsi emagetsi epamusoro senge maindasitiri mota controller, mota dzemagetsi, uye nyanzvi dzemwenje dze LED module. Aya maapplication anoda akasimba ekupisa mhinduro kudzivirira kupisa, izvo zvinogona kuderedza kushanda zvakanaka uye kukonzeresa kutadza kwechikamu nguva isati yakwana. Nekupa kusawirirana kwekupisa kupisa, yakakwira yekupisa-conductivity aluminium PCBs inoita basa rakakosha mukusimudzira mashandiro uye hupenyu hwezvishandiso zvinoiswa mukuenderera kana kushandiswa kwakanyanya.

3. High-Frequency Aluminium PCBs

High-frequency aluminum PCBs akagadzirwa nehunyanzvi polyolefin kana polyimide resin girazi faibha pre-preg zvinhu kuti zvitsigire kushanda kwemagetsi kwakaringana pama frequency akakwira. Zvinhu izvi zvinoderedza kurasikirwa kwechiratidzo uye kukanganisa, zvichiita kuti zvive zvakanyanya kukodzera kune yakakwirira-frequency nharaunda. Kugona kwavo kuchengetedza kutendeseka kwemagetsi kunovimbisa kuti vasangana nezvinoda kuomesesa zvezvishandiso zvinoda chaizvo kutapurirana chiratidzo.

Aya mabhodhi anowana kushandiswa kwakakura muRF modules, masisitimu ekutaurirana, uye masensa, kunyanya muhunyanzvi hwepamberi senge radar masisitimu uye isina waya network. Yakakwira-frequency aluminium PCBs inokunda pakudzikisa kukanganiswa kwemagetsi (EMI), izvo zvakakosha pakuchengetedza kujeka kwechiratidzo uye kuve nechokwadi chekufambisa data. Munzvimbo umo masaini ari kuda kushatisa, aya maPCB anopa mhinduro yakavimbika yekuve nechokwadi chekutaurirana pasina musono uye kuyerera kwedata.

mhedziso

Aluminium PCBs dzave dzakakosha mumaindasitiri anoda kunyatsoshanda kwemafuta, kusimba kwemuchina, uye EMI kudzivirira. Kurongeka kwealuminium PCBs kuita yakajairwa, yakakwira-thermal-conductivity, uye yakakwirira-frequency mhando inobvumira mainjiniya kusarudza yakanyanya kufanira dhizaini yekushandisa kwavo. Sarudzo yakafanira yezvinhu, sekushandisa ceramic-yakazadzwa mapolymers ekuchinjisa kupisa kana polyimide layers yekuchinjika, inoita basa rakakosha mukusimudzira kuita kwechigadzirwa.

Kunyangwe zvipingamupinyi zvekugadzira, senge copper etching uye solder mask kudhinda, hutsva mumagadzirirwo ekugadzira hunoramba huchiita aluminium PCBs mhinduro inosarudzika mukuvhenekesa kwe LED, magetsi emagetsi, masisitimu emotokari, uye michina yekutaurirana. Sezvo tekinoroji ichifambira mberi, maPCB ealuminium acharamba akakosha kune-simba rinoshanda, compact, uye yakavimbika zvigadzirwa zvemagetsi.