Kwisiseko sokuqwalaselwa ngokubanzi komgangatho wesiginali, i-EMC, uyilo olushushu, i-DFM, i-DFT, ulwakhiwo, iimfuno zokhuseleko, isixhobo sibekwe ebhodini ngokufanelekileyo. – PCB ubume.

Ukufakwa kweentambo kuwo onke amacandelo eephedi kuya kuhlangabezana neemfuno zoyilo lobushushu ngaphandle kweemfuno ezizodwa. Imigaqo ngokubanzi yePCB ephumayo.

Kuyabonakala ukuba kuyilo lwe-PCB, nokuba uyilo okanye umzila, iinjineli kufuneka ziqwalasele kwaye zihlangabezane neemfuno zoyilo lobushushu.

Ukubaluleka koyilo lwe-thermal

Amandla ombane asetyenziswa zizixhobo ze-elektroniki ngexesha lomsebenzi, ezinje ngesikhulisi samandla se-RF, i-chip ye-FPGA kunye neemveliso zamandla, ubukhulu becala ziguqulwa zibe bubushushu ngaphandle komsebenzi oluncedo. Ubushushu obuveliswa zizixhobo zombane benza ukuba ubushushu bangaphakathi bukhule ngokukhawuleza. Ukuba ubushushu abuchithwa ngexesha, izixhobo ziya kuqhubeka zishushu, kwaye izinto ziya kusilela ngenxa yobushushu obukhulu, kunye nokuthembeka kwezixhobo zombane kuya kwehla. I-SMT yonyusa uxinizelelo lofakelo lwezixhobo ze-elektroniki, inciphisa indawo yokupholisa esebenzayo, kwaye ichaphazela ngamandla ukuthembeka kobushushu bezixhobo. Ke ngoko, kubaluleke kakhulu ukuba kufundwe uyilo lobushushu.

PCB iimfuno uyilo thermal

1) kulungelelwaniso lwamacandelo, ukongeza kwisixhobo sokubona ubushushu kuya kuba sisixhobo esibuthathaka sobushushu kufutshane nendawo yokungena, kwaye ikwigunya elikhulu, ixabiso elikhulu lekhalori yamacandelo anyukayo ombhobho womoya, kude kangangoko kunokwenzeka kude Ixabiso leekhalori zamacandelo, ukuthintela iimpembelelo zemitha, ukuba ayikude, ungasebenzisa ipleyiti yobushushu (iphepha lokucoca isinyithi, ubumnyama obuncinci ngangokunokwenzeka).

2) Isixhobo esishushu kwaye siyakwazi ukumelana nobushushu ngokwaso sibekwe ecaleni kwendawo yokuphuma okanye ngaphezulu, kodwa ukuba ayikwazi ukumelana neqondo lobushushu eliphezulu, kufuneka ibekwe kufutshane nendawo engenayo, kwaye uzame ukugxadazela isikhundla kunye nezinye izixhobo zokufudumeza kunye nobushushu. izixhobo ezibuthathaka kwicala lokunyuka komoya.

I-3) Izinto ezinamandla amakhulu kufuneka zisasazwe kangangoko ukunqanda uxinzelelo lomthombo wobushushu; Izinto ezinobungakanani obahlukeneyo zilungelelaniswe ngokulinganayo ngokusemandleni, ukuze uxhathiso lomoya lusasazwe ngokulinganayo kwaye ivolumu yomoya ihanjiswe ngokulinganayo.

4) Zama ukulungelelanisa ii-vents kunye nezixhobo ezineemfuno eziphezulu zokuhambisa ubushushu.

I-5) Isixhobo esiphakamileyo sibekwe ngasemva kwesixhobo esisezantsi, kwaye icala elide lilungisiwe ecaleni kwendlela kunye nokuxhathisa komoya kancinci ukuthintela umbhobho womoya ungavali.

6) Ukucwangciswa kweradiator kufuneka kuququzelele ukujikeleza komoya otshintshiselana ngobushushu kwikhabhinethi. Xa uthembele kugqithiso lobushushu bendalo yokuhambisa ubushushu, icala elichazayo lokusasaza ubushushu kufuneka libe yinto enye kwicala lomhlaba. Ukutshatyalaliswa kobushushu ngumoya onyanzelekileyo kufuneka kuthathwe kwicala elifanayo nolwalathiso lomoya.

7) kwicala lokuhamba komoya, ayifanelekanga ukuba ilungiselele iiradiyetha ezininzi kumgama osondeleyo wobude, kuba irediyetha enyukayo iyakwahlula ukuhamba komoya, kwaye isantya somoya ongaphezulu kwiradiyetha esezantsi siya kuba sezantsi kakhulu. Kuya kufuneka umile, okanye ukusasazeka kobushushu kushiyeke ukushiya indawo.

8) Irediyetha kunye nezinye izinto kwibhodi enye yesekethe kufuneka zibe nomgama ofanelekileyo, ngokubalwa kwemitha ye-thermal, ukuze ingayenzi ubushushu obungafanelekanga.

9) Sebenzisa ukusasaza kobushushu bePCB. Ukuba ubushushu buhanjiswa kwindawo enkulu yokubeka ubhedu (iwindow evulekileyo yokufaka iwelding ingaqwalaselwa), okanye idityaniswe kumaleko ethe tyaba webhodi yePCB ngomngxunya, kwaye ibhodi yonke yePCB isetyenziselwa ukusasaza ubushushu.