Ugqinsi lwethusi kanye nenqubo yokusakaza ye-4L PCB

Ungakhetha kanjani ukujiya kwethusi okungaphakathi ebhodini kanye nenqubo yokusakazwa kwe-foil yethusi ye-4-layer PCB

Lapho uklama futhi ukhiqiza amabhodi esekethe aphrintiwe (ama-PCB), kunezici eziningi okufanele zicatshangelwe. Isici esibalulekile ukukhetha ukujiya kwethusi okungaphakathi ebhodini kanye nenqubo yokufaka ukufa kwe-foil yethusi, ikakhulukazi uma usebenzisana nama-PCB anezingqimba ezi-4. Kulokhu okuthunyelwe kwebhulogi, sizoxoxa ngokuthi kungani lezi zinketho zibalulekile futhi sikunikeze amathiphu okuthi ungenza kanjani isinqumo esingcono kakhulu.

Ukubaluleka kokuqina kwethusi ebhodini

Ugqinsi lwethusi lwe-PCB olungaphakathi kwebhodi ludlala indima ebalulekile ekusebenzeni kwayo konke nokuthembeka. Ithinta ngokuqondile ikhono lebhodi lokuqhuba ugesi ngokuphumelelayo nokulawula ukuchithwa kokushisa. Ukukhetha ukujiya kwethusi okulungile kubalulekile ukuze kuqinisekiswe ukuthi i-PCB ingakwazi ukuphatha amandla amanje ngaphandle kokushisisa ngokweqile noma ukwehla kwamandla kagesi.

Uma ama-PCB anezingqimba ezi-4 ebandakanyeka, isimo siba nzima kakhulu. Izendlalelo ezengeziwe ku-PCB zandisa ubunkimbinkimbi bomklamo, futhi ukujiya kwethusi kudinga ukucatshangelwa ngokucophelela ukuze kugcinwe ukusebenza kahle. Kodwa kufanele kukhunjulwe ukuthi ukujiya kufanele kukhethwe ngokuya ngezidingo ezithile ze-PCB kunokulandela ngokumpumputhe noma yikuphi ukucaciswa komkhakha.

Izinto Okufanele Zicatshangelwe Lapho Ukhetha Ukuqina Kwethusi Kwangaphakathi

1. Umthamo wamanje wokuthwala:Okunye okucatshangelwayo okuyinhloko lapho kukhethwa ukujiya kwethusi umthamo wamanje wokuthwala umkhondo. Amadizayini wesifunda anezingxenye zamandla aphezulu noma izinhlelo zokusebenza ezidinga ukusebenza kwamanje kufanele zisebenzise imikhondo yethusi ewugqinsi ukuze kugwenywe ukunqanyulwa kokushisa okukhulu.

2. Ukuphathwa kokushisa:Ukukhipha ukushisa okusebenzayo kubalulekile empilweni ye-PCB nokuthembeka. Izendlalelo zethusi eziwugqinsi zisiza ukuthuthukisa ukunqanyulwa kokushisa ngokunikeza indawo engaphezulu yokudlulisa ukushisa. Ngakho-ke, uma uhlelo lwakho lokusebenza lubandakanya izingxenye ezikhiqiza ukushisa okukhulu, kunconywa ukukhetha ungqimba lwethusi olukhudlwana.

3. Ukulawulwa kokuphazamiseka:Ezinhlelweni ezithile, ezifana nefrikhwensi ephezulu noma amasekhethi omsakazo, ukugcina i-impedance enembile kubalulekile. Kulokhu, ubukhulu be-copper obungaphakathi kwebhodi kufanele bukhethwe ngokucophelela ukuze kugcinwe inani elidingekayo le-impedance. Izendlalelo zethusi eziwugqinsi zisiza ekufinyeleleni ukulawulwa kwe-impedance okunembile.

Ukukhetha inqubo ye-copper foil die-casting efanele

Ngaphezu kokuqina kwethusi, inqubo yokukhipha i-foil yethusi ingesinye isici esibalulekile okufanele sicatshangelwe. Inqubo ye-die-casting inquma ikhwalithi nokufana kongqimba lwethusi ku-PCB. Nazi ezinye izici okufanele uzikhumbule lapho ukhetha inqubo efanele yokufaka ukufa:

1. Ukuqedwa kobuso:Inqubo ye-die-casting kufanele iqinisekise ukuqedwa okubushelelezi nokufana okufanayo. Lokhu kubaluleke kakhulu ukuze kuqinisekiswe ukuthengiselana okuhle nokuxhumana okuthembekile kukagesi. Ukuqedwa kwe-surface okungalungile kungabangela izinkinga ezifana nokuhluleka kokujoyina i-solder noma ukungahambi kahle okwanele.

2. Ukunamathela:Ungqimba lwethusi kufanele luxhunywe ngokuqinile ku-substrate ye-PCB ukuvimbela ukubola noma ukuwa ngesikhathi sokusebenza. Inqubo ye-die-casting kufanele iqinisekise ukunamathela okuhle phakathi kwethusi kanye ne-substrate material (imvamisa i-FR-4) ukuze kuqinisekiswe ukwethembeka nokuphila isikhathi eside kwe-PCB.

3. Ukungaguquguquki:Ukungaguquguquki kogqinsi lwethusi kuyo yonke i-PCB kubalulekile ekuqinisekiseni ukusebenza kukagesi okungaguquki kanye nokulawulwa kokuvimba. Inqubo yokufaka ukufa kufanele inikeze imiphumela engaguquki futhi inciphise ukuhluka kogqinsi lwethusi.

Thola ibhalansi efanele

Ukuthola ibhalansi efanele phakathi kokusebenza, ukwethembeka kanye nezindleko kubalulekile lapho kukhethwa ukujiya kwethusi okungaphakathi ebhodini kanye nenqubo yokusakazwa kwe-foil ye-copper. Izendlalelo zethusi eziwugqinsi kanye nezinqubo ezithuthuke kakhulu zokulingisa zingase zithuthukise ukusebenza, kodwa futhi zikhulise izindleko zokukhiqiza. Kunconywa ukuthi uthintane nomkhiqizi we-PCB onolwazi noma uchwepheshe ukuze unqume ubukhulu bekhopha obufanele kanye nenqubo yokusakaza i-die-casting ezofanela kangcono izidingo zakho ezithile kanye nemikhawulo yesabelomali.

Ekuphetheni

Ukukhetha ugqinsi lwethusi olungaphakathi ebhodini kanye nenqubo yokusakaza nge-foil yethusi kubalulekile ukuze kuqinisekiswe ukusebenza kwesikhathi eside, ukwethembeka kanye nokusebenza kwe-PCB enezingqimba ezi-4. Ukucatshangelwa ngokucophelela kwezinto ezifana nomthamo wamanje wokuthwala, ukuphathwa kwe-thermal, nokulawulwa kwe-impedance kubalulekile ekwenzeni ukukhetha okufanele. Ukwengeza, ukukhetha inqubo ye-die-casting ehlinzeka ngokuqeda okubushelelezi, ukunamathela okuhle kakhulu, nemiphumela engaguquki kuzothuthukisa ikhwalithi iyonke ye-PCB. Khumbula, yonke idizayini ye-PCB ihlukile futhi ukuthola ibhalansi ephelele phakathi kwezidingo zobuchwepheshe kanye nokuba nokwenzeka kokukhiqiza kuwukhiye wempumelelo.