Kwizixhobo ze-elektroniki, inani elithile lobushushu liveliswa ngexesha lokusebenza, ukuze amaqondo obushushu angaphakathi okuphumelela anyuka ngokukhawuleza. Ukuba ubushushu abukhali ngexesha, izixhobo ziya kuqhubeka nokuphakama, kwaye ifowuni iyasilela ngenxa yokugxeka. Ukuthembeka kwesixhobo se-elektroniki se-elektroniki kuya kuncipha.
Ke ngoko, kubaluleke kakhulu ukuqhuba unyango oluhle lobushushu ubushushu kwibhodi yesekethe. Ukuhlanjwa kobushushu kwiBhodi yeSekethe yePCB likhonkco elibaluleke kakhulu, ke yintoni ubuchule bokwenza ubushushu kwiBhodi yeSekethe yePCB ye-PCB, masixoxe kunye ngezantsi.
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Ukuchithwa kobushushu ngebhodi ye-PCB ngokwakho Iibhodi zePCB ze-PCB ziyi-Copper Clop / i-Epoxy Glass Claut okanye i-Epoxy Glass Reations okanye iibhodi ezincinci zephepha le-phedis zisetyenziswa.
Nangona la matyala aneepropathi ezigqwesileyo kunye neepropathi zokusebenza, anezinto ezimbi zobushushu. Njengendlela yokuphumelela kobushushu kwiindawo ezinobushushu, phantse kungenakwenzeka ukuba kulindelwe ubushushu kwi-PCB ukuqhuba ubushushu, kodwa ukubufumana ubushushu bomphezulu womoya ojikelezileyo.
Nangona kunjalo, njengoko iimveliso ze-elektroniki zingene kwixesha lokulinganisa amacandelo, indawo yokuphakama okungathandekiyo, kunye nendibano yokufudumeza, akwanelanga ukuxhomekeka kumphezulu wendawo encinci yokufumana ubushushu.
Kwangelo xesha, ngenxa yokusetyenziswa kakhulu kweNtaba yeNtaba yoMphezulu efana ne-QFP kunye ne-BGA, ubungakanani obukhulu obuvela ngamacandelo budluliselwe kwiBhodi yePCB. Ke ngoko, eyona ndlela ilungileyo yokusombulula ingxaki yokungafuneki kobushushu kukuphucula amandla obushushu be-PCB ngokwayo, eyokudibana ngokuthe ngqo neBhodi yokufudumeza, ngebhodi ye-PCB. Iqhutywa okanye i-bid.
Ke ngoko, kubaluleke kakhulu ukuqhuba unyango oluhle lobushushu ubushushu kwibhodi yesekethe. Ukuhlanjwa kobushushu kwiBhodi yeSekethe yePCB likhonkco elibaluleke kakhulu, ke yintoni ubuchule bokwenza ubushushu kwiBhodi yeSekethe yePCB ye-PCB, masixoxe kunye ngezantsi.
01
Ukuchithwa kobushushu ngebhodi ye-PCB ngokwakho Iibhodi zePCB ze-PCB ziyi-Copper Clop / i-Epoxy Glass Claut okanye i-Epoxy Glass Reations okanye iibhodi ezincinci zephepha le-phedis zisetyenziswa.
Nangona la matyala aneepropathi ezigqwesileyo kunye neepropathi zokusebenza, anezinto ezimbi zobushushu. Njengendlela yokuphumelela kobushushu kwiindawo ezinobushushu, phantse kungenakwenzeka ukuba kulindelwe ubushushu kwi-PCB ukuqhuba ubushushu, kodwa ukubufumana ubushushu bomphezulu womoya ojikelezileyo.
Nangona kunjalo, njengoko iimveliso ze-elektroniki zingene kwixesha lokulinganisa amacandelo, indawo yokuphakama okungathandekiyo, kunye nendibano yokufudumeza, akwanelanga ukuxhomekeka kumphezulu wendawo encinci yokufumana ubushushu.
Kwangelo xesha, ngenxa yokusetyenziswa kakhulu kweNtaba yeNtaba yoMphezulu efana ne-QFP kunye ne-BGA, ubungakanani obukhulu obuvela ngamacandelo budluliselwe kwiBhodi yePCB. Ke ngoko, eyona ndlela ilungileyo yokusombulula ingxaki yokungafuneki kobushushu kukuphucula amandla obushushu be-PCB ngokwayo, eyokudibana ngokuthe ngqo neBhodi yokufudumeza, ngebhodi ye-PCB. Iqhutywa okanye i-bid.
Xa umoya uyahamba, ihlala idla ngokuhamba kwiindawo ezinenkcaso, ke xa kusenziwa izixhobo kwiBhodi yeSiphako eprintiweyo, kuphephe ukushiya i-airpace enkulu kwindawo ethile. Uqwalaselo lweebhodi zesekethe ezininzi eziprintiweyo kulo matshini uphela kufuneka unikele ingqalelo kwingxaki enye.
Isixhobo esinobuthathaka seqondo lobushushu sibekwe kakuhle kwindawo esezantsi yobushushu (njengezantsi kwesixhobo). Ungaze uyibeke ngqo ngaphezulu kwesixhobo sokufudumeza. Kungcono kakhulu ukuba uxhase izixhobo ezininzi kwindiza ethe tyaba.
Beka izixhobo zeyona moto iphakamileyo kakhulu kunye nesizukulwana sobushushu kufutshane nesona sikhundla sibalaseleyo sokutya okufudumeza. Sukubeka izixhobo zokufudumeza eziphezulu kwiimbombo kunye nemiphetho yedijithali yeBhodi eprintiweyo, ngaphandle kokuba i-suft senk icwangciswe kufutshane nayo.
Xa uyila umkhuseli wombane, khetha isixhobo esikhulu kangangoko unakho, kwaye wenze indawo eyaneleyo yokutya ubushushu xa uhlengahlengisa ubume beBhodi eprintiweyo.
Izinto ezivelisa ubushushu obuPhakamileyo kunye neepleyiti zokwenza ubushushu. Xa inani elincinci lezinto kwi-PCB livelisa inani elikhulu lobushushu (ngaphantsi kwe-3), isinki esitshisayo okanye umbhobho wobushushu sinokongezwa kwicandelo elivelisa ubushushu. Xa iqondo lobushushu alinakho ukuthotywa, lingasetyenziselwa i-radiator nge-fan ukuphucula isiphumo sobushushu.
Xa inani lezixhobo zokufudumeza likhulu (ngaphezulu kwe-3), ikhava ye-Desipation yasebusika (iBhodi) isetyenziselwa i-SICK kunye nokuphakama kwesixhobo sokufudumeza kwi-PCB okanye isinki esikhulu seflethi esisikiweyo esiziikhilomitha ezahlukeneyo. Ikhava yokulahla inkunkuma ihambelana nomphezulu wecandelo, kwaye inxibelelana necandelo ngalinye ukuba libubushushu.
Nangona kunjalo, isiphumo sokuchitheka kobushushu asilunganga ngenxa yokungqinelana kakubi koqondeni ngexesha lokuhlangana nokwahlulahlula izinto. Ngokwesiqhelo, i-thermal yenqanaba lokutshintsha kwenqanaba le-thermal yongezwa kumphezulu wecandelo ukuphucula umphumo wokulimaza ubushushu.
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Ngezixhobo ezithandanayo zokupholisa umoya zasimahla, kungcono ukucwangcisa isekethe eminyani (okanye ezinye izixhobo) ngokuthe nkqo okanye ngokuthe tye.
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Ukwamkela uyilo olufanelekileyo lwe-wiring lokufumana i-sperication yobushushu. Ngenxa yokuba i-resen kwiplate inengxaki yokuqhutywa kwe-shir, kwaye imingxunya yobhedu kunye nemingxunya inobushushu, ukwandisa ireyithi yobhedu yeholeji yokuqulunqwa kwendlela yokuphucula ubushushu. Ukuvavanya ukwakha amandla obutshisa i-PCB, kuyimfuneko ukubala ukuqhutywa kwe-PARMY ngokulinganayo (i-Eq) yezinto ezihlanganisiweyo ezihlanganisiweyo zezinto ezahlukeneyo nge-PCB.
Amacandelo kwiBhodi efanayo ePriple eprintiweyo kufuneka acwangciswe kangangoko kunokwenzeka ngokwexabiso labo lololoritic kunye nenqanaba lokuhlaselwa kobushushu. Izixhobo ezinexabiso eliphantsi le-caloritific okanye ukumelana nobushushu obungalunganga (ezinje ngohambo oluncinci, iisekethe ezihlanganisiweyo ezincinci, amachaphaza amachaphaza amancinci, njl. Njl.) Kufuneka ibekwe kwindawo yokupholisa umoya. Ukuhamba okungaphezulu (emnyango), izixhobo ezinobushushu obukhulu okanye ukumelana nobushushu (iisekethe ezihlanganisiweyo, iisekethe ezihlanganisiweyo ezinkulu, njl.).
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Kwindlela ethe tyaba, izixhobo ezinamandla ezinamandla zicwangciswe kufutshane nomda weBhodi eprintiweyo kangangoko kunokwenzeka ukufutshane nendlela yokudlulisa ubushushu; Kwindlela ethe nkqo, izixhobo ezinamandla ezinamandla zicwangciswe kufutshane kangangoko kunokwenzeka ukuya phezulu kwiBhodi eprintiweyo ukuze inciphise ifuthe lezi zixhobo kwiqondo lobushushu bezixhobo. .
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Ukuhlanjwa kobushushu kwiBhodi ePriple kwizixhobo ikakhulu kuxhomekeke ekuhambeni komoya, ke indlela yokuhamba komoya kufuneka ifundwe ngoyilo, kwaye iBhodi yeSekethe iprintiweyo kufuneka ilungiswe ngokufanelekileyo.
Xa umoya uyahamba, ihlala idla ngokuhamba kwiindawo ezinenkcaso, ke xa kusenziwa izixhobo kwiBhodi yeSiphako eprintiweyo, kuphephe ukushiya i-airpace enkulu kwindawo ethile.
Uqwalaselo lweebhodi zesekethe ezininzi eziprintiweyo kulo matshini uphela kufuneka unikele ingqalelo kwingxaki enye.
08
Isixhobo esinobuthathaka seqondo lobushushu sibekwe kakuhle kwindawo esezantsi yobushushu (njengezantsi kwesixhobo). Ungaze uyibeke ngqo ngaphezulu kwesixhobo sokufudumeza. Kungcono kakhulu ukuba uxhase izixhobo ezininzi kwindiza ethe tyaba.
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Beka izixhobo zeyona moto iphakamileyo kakhulu kunye nesizukulwana sobushushu kufutshane nesona sikhundla sibalaseleyo sokutya okufudumeza. Sukubeka izixhobo zokufudumeza eziphezulu kwiimbombo kunye nemiphetho yedijithali yeBhodi eprintiweyo, ngaphandle kokuba i-suft senk icwangciswe kufutshane nayo. Xa uyila umkhuseli wombane, khetha isixhobo esikhulu kangangoko unakho, kwaye wenze indawo eyaneleyo yokutya ubushushu xa uhlengahlengisa ubume beBhodi eprintiweyo.