Kwizixhobo ze-elektroniki, umlinganiselo othile wokushisa uveliswa ngexesha lokusebenza, ukwenzela ukuba ukushisa kwangaphakathi kwezixhobo kukhuphuke ngokukhawuleza. Ukuba ubushushu abuchithwanga ngexesha, izixhobo ziya kuqhubeka zifudumala, kwaye isixhobo siya kuphumelela ngenxa yokushisa. Ukuthembeka kwezixhobo ze-elektroniki Ukusebenza kuya kuncipha. Ngoko ke, kubaluleke kakhulu ukuqhuba unyango olufanelekileyo lokutshatyalaliswa kobushushu kwi- ibhodi yesekethe.

Uyilo lwePCB yinkqubo esezantsi elandela uyilo lomgaqo, kwaye umgangatho woyilo uchaphazela ngokuthe ngqo ukusebenza kwemveliso kunye nomjikelo wemarike. Siyazi ukuba amacandelo ebhodi yePCB anoluhlu lwawo lobushushu obusebenzayo. Ukuba olu luhlu lugqithisiwe, ukusebenza kakuhle kwesixhobo kuya kuncitshiswa kakhulu okanye ukungaphumeleli, okubangela umonakalo kwisixhobo. Ke ngoko, ukuchithwa kobushushu kuyingqwalasela ebalulekileyo kuyilo lwePCB.

Ke, njengenjineli yoyilo lwePCB, kufuneka sikuqhube njani ukuphelisa ubushushu?

Ukutshatyalaliswa kobushushu be-PCB kuhambelana nokukhethwa kwebhodi, ukukhethwa kwamacandelo, kunye nokwakheka kwamacandelo. Phakathi kwazo, uyilo ludlala indima ebalulekileyo kwi-PCB yokuchitha ubushushu kwaye yinxalenye ephambili yoyilo lokuphelisa ubushushu bePCB. Xa besenza iinjineli, iinjineli kufuneka ziqwalasele le miba ilandelayo:

(1) Uyilo olusembindini kwaye ufakele amacandelo avelisa ubushushu obuphezulu kunye nemitha enkulu kwenye ibhodi yePCB, ukuze kuqhutywe umoya owahlukileyo ophakathi nendawo kunye nokupholisa ukuphepha ukuphazamisana kunye ne-motherboard;

(2) Umthamo wobushushu webhodi yePCB usasazwa ngokulinganayo. Musa ukubeka amacandelo amandla aphezulu ngendlela egxininisiweyo. Ukuba ayinakuphepheka, beka amacandelo amafutshane phezulu komsinga womoya kwaye uqinisekise ukuhamba komoya owaneleyo wokupholisa kwindawo egxininiswe yokusetyenziswa kobushushu;

(3) Yenza indlela yokuhambisa ubushushu ibe mfutshane kangangoko;

(4) Yenza icandelo lomnqamlezo wokudlulisa ubushushu libe likhulu kangangoko;

(5) Uyilo lwamalungu kufuneka luthathele ingqalelo impembelelo yemitha yobushushu kwiindawo ezingqongileyo. Iindawo ezibuthathaka zobushushu kunye namalungu (kubandakanywa nezixhobo ze-semiconductor) kufuneka zigcinwe kude nemithombo yobushushu okanye zodwa;

(6) Nika ingqalelo kwicala elifanayo lokungenisa umoya ngenkani kunye nendalo;

(7) Iibhodi ezincinci ezongezelelweyo kunye nemibhobho yomoya yesixhobo zikwicala elinye nelokuphuma komoya;

(8) Kangangoko kunokwenzeka, yenza ukuthabatha kunye nokukhupha kube nomgama owaneleyo;

(9) Isixhobo sokufudumeza kufuneka sibekwe ngaphezu kwemveliso kangangoko, kwaye kufuneka sibekwe kumjelo wokuhamba komoya xa iimeko zivuma;

(10) Musa ukubeka izinto ezinobushushu obuphezulu okanye umsinga ophakamileyo kwiikona kunye nemiphetho yebhodi yePCB. Faka i-heat sink kangangoko kunokwenzeka, uyigcine kude namanye amacandelo, kwaye uqinisekise ukuba umjelo wokutshatyalaliswa kobushushu awuthinteli.