Khetha imathiriyeli yokuchitha ubushushu kwi-PCB ene-3-layer

Ukukhetha ulawulo olufanelekileyo lobushushu kunye nezixhobo zokulahla ubushushu kwiiPCB ezinomaleko amathathu kubalulekile ekunciphiseni amaqondo obushushu amacandelo kunye nokuqinisekisa ukuzinza kwenkqubo ngokubanzi.Njengoko itekhnoloji ihambela phambili, izixhobo zombane ziba zincinci kwaye zibe namandla ngakumbi, okukhokelela ekukhuleni kobushushu.Oku kufuna izicwangciso zokulawula ukushisa okusebenzayo ukukhusela ukushisa kunye nokusilela kwezixhobo ezinokubakho.Kule post yeblogi, siya kukukhokela malunga nendlela yokukhetha izinto ezifanelekileyo zokulawula ukushisa kunye nokutshatyalaliswa kobushushu kwii-PCB ze-3.

1. Qonda ukubaluleka kolawulo lwe-thermal

Ulawulo lwe-thermal lubalulekile ekuqinisekiseni ukusebenza okuthembekileyo kwezixhobo zombane.Ukushisa okugqithisileyo kunokukhokelela ekunciphiseni ukusebenza, ukunyuka kokusetyenziswa kwamandla, kunye nobomi obufutshane benkonzo.Ukupholisa okufanelekileyo kubalulekile ekugcineni amaqondo obushushu ngaphakathi kwemida ekhuselekileyo.Ukungahoywa kolawulo lwe-thermal kunokukhokelela kuxinzelelo lwe-thermal, ukuthotywa kwecandelo, okanye ukusilela kwintlekele.

2. Iingqwalasela eziphambili kwiiMathiriyeli zoLawulo lweThermal

Xa ukhetha izixhobo zolawulo lwe-thermal kwii-PCB ezi-3, ezi zinto zilandelayo kufuneka ziqwalaselwe:

-I-Thermal conductivity:Ikhono lezinto eziphathekayo ukuqhuba ukushisa ngokufanelekileyo kubalulekile.I-conductivity ephezulu ye-thermal ngokukhawuleza ikhupha ukushisa ukusuka kumacandelo ukuya kwindawo engqongileyo.Izinto ezifana nobhedu kunye ne-aluminiyam zisetyenziswa ngokubanzi ngenxa yeempawu zabo ezintle ze-thermal conductivity.

- Ukufakwa kombane:Ekubeni i-PCB ene-3-layer iqulethe iileyile ezininzi ezineenxalenye ezahlukeneyo ze-elektroniki, kubalulekile ukukhetha izinto ezibonelela ngokusebenza kombane.Oku kuthintela iisekethe ezimfutshane kunye nezinye iimpazamo zombane kwisistim.Izinto zokulawula i-thermal ezineempawu ezintle zokugquma umbane zikhethwayo, njenge-ceramics okanye i-silicon-based compounds.

-Ukuhambelana:Izinto ezikhethiweyo kufuneka zihambelane nenkqubo yokuvelisa esetyenziselwa ukuvelisa ii-PCB ezi-3.Kufuneka zilungele lamination kwaye ibe nokunamathela kakuhle kwezinye iileya PCB.

3. Izinto zokuchitha ubushushu kwi-PCB ene-3-layer

Ukomeleza ukusebenza kwe-thermal ye-PCB ene-3-layer, izinto ezahlukeneyo kunye nobuchwepheshe bunokusetyenziswa:

-IziXhobo ze-Thermal Interface (TIM):I-TIM inciphisa ukuxhathisa kwe-thermal ngokuphucula ukuhanjiswa kobushushu phakathi kwamacandelo kunye nobushushu bokushisa.Ezi zixhobo zigcwalisa izithuba zomoya we-microscopic phakathi kwendawo kwaye ziza kwiifom ezahlukeneyo, kubandakanywa iipads ze-thermal, i-gel, i-pastes kunye nezinto zokutshintsha isigaba.Ukukhethwa kwe-TIM kuxhomekeke kwizinto ezifana ne-thermal conductivity, ukuhambelana kunye nokusebenza kwakhona.

-Iradiator:I-radiator ibonelela ngommandla omkhulu wokuchitha ubushushu.Ngokuqhelekileyo zenziwe nge-aluminiyam okanye ubhedu kwaye zincanyathiselwe kumandla aphezulu zisebenzisa i-adhesive eshushu okanye iziqhoboshi zoomatshini.Uyilo lwesinki yobushushu kunye nokubekwa kufuneka kuphuculwe ukuqinisekisa ukuchithwa kobushushu okusebenzayo.

- UYilo lweBhodi yeSekethe:Uyilo olufanelekileyo lwePCB ludlala indima ebalulekileyo ekutshitshiseni ubushushu.Ukudibanisa amacandelo anamandla aphezulu kunye nokuqinisekisa isithuba esaneleyo phakathi kwawo kuvumela ukuhamba komoya okungcono kunye nokunciphisa ukugxila kobushushu.Ukubeka izinto zokufudumeza kufuphi nomgangatho ongaphandle we-PCB kukhuthaza ukuchithwa kobushushu ngokufanelekileyo ngokusebenzisa i-convection.

-Ngendlela:I-Vias inokubekwa ngobuchule ukuqhuba ubushushu ukusuka kumaleko angaphakathi e-PCB ukuya kumaleko angaphandle okanye kwi-sink yobushushu.Ezi ndlela zisebenza njengeendlela ezishushu kwaye zongeza ukulahla ubushushu.Ukubekwa ngendlela eyiyo kunye nokuhanjiswa kwe-vias kubalulekile kulawulo olululo lobushushu.

4. Ukwandisa ukuzinza kwenkqubo ngolawulo olusebenzayo lwe-thermal

Uzinzo lwe-3-layer PCB inkqubo inokuphuculwa kakhulu ngokukhetha ngononophelo kunye nokuphunyezwa kwezinto ezifanelekileyo zokulawula ukushisa.Ukulawulwa kwe-thermal okwaneleyo kunciphisa umngcipheko wokushisa kunye nokuqinisekisa ixesha elide lamacandelo e-elektroniki, ngaloo ndlela ukwandisa ukuthembeka kwenkqubo.

Isishwankathelo

Ukukhetha ulawulo oluchanekileyo lwe-thermal kunye nezixhobo zokutshatyalaliswa kobushushu kwi-PCB ye-3-layer ibalulekile ekuthinteleni ukushisa okukhulu kunye nokuqinisekisa ukuzinza kwenkqubo.Ukuqonda ukubaluleka kolawulo lwe-thermal, ukuqwalasela izinto ezifana ne-thermal conductivity kunye nokufakelwa kombane, kunye nokusetyenziswa kwezinto ezifana ne-TIMs, ii-sinks zokufudumala, ukulungiswa kwebhodi ephuculweyo, kunye ne-vias ebekwe ngobuchule ngamanyathelo abalulekileyo ekuphumezeni ulawulo olululo lwe-thermal.Ngokubeka phambili ulawulo lwe-thermal, unokukhusela ukusebenza kunye nokuphila ixesha elide kwezixhobo zakho zombane.