Amaphutha Okuklama Okujwayelekile kwe-MCCBB nokuthi Ungawagwema Kanjani

Ukuqonda Umthelela Wamaphutha Edizayini Ye-MCPCB

Amabhodi Esekethe Aphrintiwe Ensimbi Ane-Core enza imisebenzi ebalulekile ekukhanyeni kwe-LED enamandla amakhulu, amamojula okuguqulwa kwamandla, kanye ne-elekthronikhi yezimoto lapho ukuphathwa kokushisa kunquma khona ubude bomkhiqizo. Amaphutha okuklama kuma-MCPCB ngokuvamile avela njengokwehluleka kokushisa, izinkinga zobuqotho besignali, kanye nokuwohloka kwamadivayisi ngaphambi kwesikhathi okuphazamisa ukuthembeka kohlelo.

Ukugwema amaphutha edizayini ye-MCPCB kudinga ukunakwa okuhlelekile emizileni eshisayo, ukuhlukaniswa kukagesi, kanye nezingqinamba zokukhiqiza kuwo wonke umjikelezo wokuthuthukiswa. Onjiniyela abaphatha idizayini eshisayo njengokucatshangelwa kwakamuva babhekana nengozi enkulu kakhulu yokuklama kabusha okumba eqolo kanye nokwehluleka kwenkambu.

Amaphutha Edizayini Yokuphatha Okushisayo kuma-MCPCBs

Izidingo Zokushabalalisa Ukushisa Okuphansi

Amaphutha edizayini ye-MCPCB avame kakhulu asukela ekuhlaziyeni okushisayo okunganele phakathi nesigaba somqondo. Onjiniyela bavamise ukubukela phansi ukushisa kwangempela ngokwehluleka ukulandisa ngokuhlukahluka kwezinga lokushisa elizungezile, amaphethini omjikelezo wemisebenzi, kanye nemiphumela ekhulayo yokushisa evela ezingxenyeni eziseduze.

Izici ezibalulekile ezivame ukunganakwa ekubaleni okushisayo zifaka:

• Isixhumi esibonakalayo ukumelana nokushisa - Izinto zokusebenzelana ezishisayo zengeza u-0.5 kuye ku-2°C/W phakathi kwe-MCPCB nesinki sokushisa, okunomthelela omkhulu ekungangeni kwe-thermal okuphelele.
• Ukuhlukahluka kwesimo se-ambient - Izidingo zokunciphisa izinga lokushisa zinciphisa amandla wangempela ngo-20-40% uma kuqhathaniswa nezimo ezifanele zaselabhorethri.
• Imiphumela yokushisa enqwabelene - Imithombo yokushisa eminingi idala imithwalo eshisayo ehlanganisiwe eyeqa izibalo zengxenye ngayinye.

Izibalo zokumelana nokushisa kufanele zihlanganise indlela yokudlulisa ukushisa egcwele ukusuka enhlonhlweni yokuhlangana kuya endaweni ezungezile. Amathuluzi okulingisa afana ne-ANSYS noma i-ThermalCAD ​​ahlinzeka ngohlaziyo oluqagelayo lapho anikezwe ngezinto ezibonakalayo ezinembile nezimo zomngcele.

Amaphutha Wokukhetha Kwengqimba Ye-Dielectric

Ukukhetha izinto ze-dielectric ngokusekelwe kuphela ekucabangeni kwezindleko kumelela iphutha eliyisisekelo lokuklama i-MCPCB elinemiphumela emibi kakhulu yokushisa. Isendlalelo se-dielectric silawula ukumelana nokushisa okuphelele, ngamanani ajwayelekile okuqhuba ukushisa asukela ku-1 kuya ku-3 W/m·K wezinto ezijwayelekile kanye nakufika ku-5 W/m·K wezinketho ze-premium.

Ukukhetha ukushuba kwe-Dielectric kubandakanya ukulinganisa izidingo zokuhlukaniswa kukagesi ngokumelene nezinjongo zokusebenza ezishisayo. Ubukhulu busuka kuma-micrometer angu-50 kuye ku-150, ngezingqimba ezizacile ezinikeza ukumelana nokushisa okuphansi kodwa amandla e-dielectric ancishisiwe. Onjiniyela kufanele bahlole amazinga wokucindezeleka kwamandla kagesi ukuze bavimbele ukuwohloka ngenkathi begcina i-impedance eyamukelekayo yokushisa.

Isakhiwo Sengxenye namaphutha Omklamo Wokubekwa

Amasu Okusabalalisa Ingxenye Empofu

Amaphutha okubekwa kwezingxenye adala izindawo ezishisayo zendawo ezeqa umthamo wokusabalalisa ukushisa we-metal core substrate. Ukugxilisa amadivaysi anamandla amakhulu ezindaweni ezincane kukhiqiza ama-gradient ashisayo abangela ukwanda okungalingani, okuholela ekudambiseni phakathi kwe-foil yethusi kanye nezingqimba ze-dielectric.

Ukuphathwa kokushisa okuphumelelayo kudinga ukusabalalisa imithombo yokushisa kuyo yonke indawo ngenkathi kugcinwa izindlela zokulethwa kwamandla ezinengqondo. Ukubekwa ngendlela ehlelekile kwe- thermal vias ezindaweni zethusi ezizungezile amadivayisi kagesi kuthuthukisa ukusabalala kokushisa okuseceleni ngaphambi kokudluliselwa ngesendlalelo se-dielectric.

Amaphutha e-Copper Trace kanye ne-Pad Design

Isisindo sethusi esinganele noma ububanzi bokulandelela bumele iphutha elivamile le-MCPCB lomklamo elithinta kokubili umthamo wamanje wokuthwala nokusebenza okushisayo. Amathrekhi kufanele aphathe amandla kagesi ngaphandle kokushisisa okunamandla okweqile kuyilapho esebenza njengamakhondatha ashisayo ukusuka ezingxenyeni kuya kunkambo yensimbi.

I-Pad geometry ithonya ngokuqondile ubuqotho obuhlangene be-solder bokushisa nokwemishini emihlanganweni ye-MCPCB. Amaphedi amakhulu angenawo amaphethini okusiza ekushiseni okushisayo akhipha ukushisa okudlulele ngesikhathi sokusoda, okuholela emajoyini abandayo. Ngokuphambene, amaphedi amancane afaka engozini amandla okusebenza kanye nokuhlangana okushisayo kumongo wensimbi ongaphansi.

Amaphutha Edizayini Yokuhlukanisa Kagesi kuma-MCPCB we-Voltage High-Voltage

I-Creepage enganele kanye ne-Clearance Distance

Izinhlelo zokusebenza ze-MCPCB ezinamandla aphezulu zidinga ukunakwa okujulile ezidingweni zesikhala sikagesi abaklami abasafufusa abavame ukungasinaki. Ibanga lokuhamba , elilinganiswa phakathi kwama-conductors ngama-potential ahlukene, kumele lihlangabezane nezindinganiso ezifana ne-IEC 60664 ukuvimbela ukulandelwa kwendawo kanye nokwehluleka kwe-dielectric ekugcineni.

Izidingo ezibalulekile zesikhala zikagesi zifaka:

• Izindinganiso zebanga le-creepage – Ubuncane be-0.25 millimeters ngekhilovolthi busebenza njengesisekelo, bulungiselwe idigri yokungcola kanye nokuphakama.
• Ukususwa emoyeni - Isikhala esanele sivimbela i-arcing kanye nokukhishwa kwe-corona, ikakhulukazi eduze kwendiza yesisekelo sensimbi.
• Izithiyo ze-mask ze-solder - Izendlalelo ezengeziwe zokufakelwa zingadingeka ukuze kufinyelelwe izilinganiso zamandla kagesi ezakhiweni ezihlangene.

Amaphutha edizayini esikhaleni sikagesi avamise ukwenzeka lapho onjiniyela basebenzisa imithetho ye-PCB ejwayelekile ngaphandle kokubala ukusondela kwendiza yesisekelo sensimbi. Ukuxhumana okuthuthukisiwe kwe-insulation kungase kudinge isicelo sokuhlanganisa esivumelanayo ukuze kuzuzwe izilinganiso zamandla kagesi ezidingekayo.

I-Metal Core Grounding Design Amaphutha

Ukuphatha ungqimba oluwumgogodla wensimbi njengendawo esebenza ngogesi ngaphandle kwesu elifanele lokuhlukanisa lihlanganisa iphutha elibalulekile lomklamo we-MCPCB ezinhlelweni eziningi. Nakuba isisekelo sensimbi singasebenza njengereferensi ephansi kweminye imiklamo, izihibe ezingahlosiwe zaphansi kanye nokuhlangana komsindo kwenzeka lapho amaphuzu amaningi aphansi enza izindlela zamanje eziyindilinga.

Amasistimu adinga ukuhlukaniswa kukagesi phakathi kwengqikithi yensimbi nendawo yesekethe adinga ukunakwa okukhethekile ngesikhathi sokuhlela nokuhlanganisa. Amadokhumenti edizayini kufanele akhulume ngokucacile ngezidingo zokuhlukaniswa ukuze kuvinjelwe amaphutha omhlangano afaka ukuphepha engozini.

Amaphutha Okukhiqiza kanye Nokwakhiwa Kwenhlangano

Ukuziba Idizayini Yezimiso Zokukhiqiza

Amaphutha edizayini ye-MCPCB avame ukuvela ngenxa yokuntuleka kokuxhumana nabalingani bokukhiqiza phakathi nesigaba sokuklama. Ubuncane bosayizi besici, izilinganiso zokumboza, kanye nokusetshenziswa kwamaphaneli kuthinta ngokuqondile isivuno sokwenziwa kanye nezindleko kodwa zithola ukucatshangelwa okunganele kubaklami okugxile ekusebenzeni kukagesi kuphela.

Izinqubo ezijwayelekile ze-MCPCB zivame ukusekela ububanzi bokulandelela obuncane obungamamilimitha angu-6 kanye namadayamitha wokubhoboza angamamilimitha angu-0.3, nakuba amandla ehluka phakathi kwabakhiqizi. Izindlela zokuhlukanisa iphaneli kufanele zibe nomthelela kububanzi besiteshi somzila kanye nokubekwa kwamathebhu ukuze kuqinisekiswe ukuhlukaniswa kwebhodi okuhlanzekile ngaphandle kokulimala.

Amaphutha Wokukhetha Okuphezulu

Ukucaciswa kokuqedwa kobuso kumelela iphuzu elibalulekile lesinqumo lapho amaphutha okuklama e-MCPCB angaphazamisa khona ukukhiqizwa kokuhlanganiswa kanye nokuthembeka kwesikhathi eside. Ukulinganisa i-Hot Air Solder kunikeza isivikelo esingabizi kakhulu kodwa kudala izindawo ezingalingani eziyinkinga zezingxenye eziqondile kanye nokuhlolwa okuzenzakalelayo kwe-optical.

Ukucatshangelwa okujwayelekile kokuqedwa kwe-surface kufaka:

• Izinzuzo ze-ENIG - I-Electroless Nickel Immersion Gold inikeza izindawo eziyisicaba ezilungele ukuxhunywa kwezintambo nempilo yeshelufu eyandisiwe.
• Ukuhambisana nokuhamba ngebhayisikili okushisayo - I-coefficient yokungezwani kokwanda okushisayo phakathi kwezinto zokuqeda kanye nesisekelo sensimbi yethusi kudala ukucindezelwa kobuso.
• Imikhawulo ye-OSP - I-Organic Solderability Preservative inikeza ukuguquguquka okuncane kodwa kudinga ukugcinwa ngokucophelela ukuze kugcinwe ukudayiswa.

Ukusebenzisana phakathi kokuphela kwendawo kanye nokuhamba ngebhayisikili okushisayo kudinga ukunakwa ngokukhethekile ezinhlelweni ze-MCPCB ezingaphansi kohambo lokushisa oluphindaphindiwe.

Ukuqinisekisa kanye namaphutha omklamo wokuhlola

Amaphrothokholi Okuhlola Okushisayo Angenele

Ukweqa ukuqinisekiswa okugcwele kokushisa kumelela iphutha lokuklama le-MCPCB elibizayo elivumela izinkinga ukuthi zisakazeke emkhiqizweni. I-infrared thermal imaging ngesikhathi sokusebenza okunikwe amandla kuveza ukusatshalaliswa kwezinga lokushisa kwangempela futhi ihlonze izindawo ezishisayo ezingabikezelwa ngokulingisa ngenxa yokulinganisa kokumodela noma ukuhlukahluka kwempahla.

Ukuhlolwa kokuhamba ngebhayisikili okushisayo kusheshisa izindlela zokwehluleka ezihlobene ne-coefficient yokungezwani kokwanda okushisayo phakathi kwezinto eziku-stackup ye-MCPCB. Amazinga emboni ngokuvamile acacisa izinga lokushisa elisuka ku -40°C kuya ku-+125°C ngezibalo zomjikelezo zisuka ku-500 kuye kwezingu-1000 eziphindaphindayo kuye ngezidingo zohlelo lokusebenza.

Imikhawulo Yokuhlola Ugesi

Ukuthembela kuphela ekuhloleni ukuqhubeka kukagesi ngaphandle kokuqinisekisa okuphelele kwamandla e-dielectric kudala ubungozi bokuhluleka kwenkambu ngenxa yokukhubazeka okucashile. Ukuhlola okungaba namandla aphezulu kuma-voltage adlula izimo zokusebenza ezijwayelekile ngamamajini okuphepha acacisiwe kukhomba izindawo ezibuthakathaka ezinhlelweni zokuvala izinto ngaphambi kokuthunyelwa komkhiqizo.

Ukuhlolwa kwe-Flying probe kunikeza ukuqinisekiswa okusebenzayo kokuxhumeka kukagesi kwe-MCPCB kodwa akukwazi ukuhlola ukusebenza okushisayo noma ubuqotho bemishini. Ukuqinisekiswa kwedizayini kudinga ukuhlanganisa ukuhlolwa kukagesi nezimpawu ezishisayo kanye nokuhlolwa kokucindezeleka komshini ukuze kuqinisekiswe ukuthi zonke izinhlaka ezibalulekile ziyahlangabezana nokucaciswa.

Ukugwema Amaphutha Edizayini Ye-MCPCB: Izindlela Ezinhle Kakhulu

Umklamo we-MCPCB ophumelelayo udinga ukulinganisela ukusebenza kokushisa, izidingo zikagesi, imikhawulo yemishini, kanye nokwenzeka kokukhiqiza kuyo yonke inqubo yokuthuthukisa. Amaphutha okuklama abaluleke kakhulu avela ekuphatheni lezi zici njengezici ezizimele kunokuqaphela uhlobo lwazo oluxhumene.

Onjiniyela abatshala isikhathi ekuhlaziyeni okuphelele kokushisayo, ukukhetha izinto ezifanele, kanye nezinqubo zokuhlola eziphelele bathola imiphumela ehamba phambili ngokuphindaphinda kwedizayini okumbalwa. Ukuxhumana kusenesikhathi nozakwethu bokukhiqiza kunika amandla ukuthuthukiswa kwedizayini ngaphambi kokuzibophezela ekusetshenzisweni kwamathuluzi okukhiqiza kanye nokuthengwa kwezinto ezibonakalayo.

Kwa-Highleap Electronics, ithimba lethu lobunjiniyela lisebenzisana namakhasimende ukuhlonza nokuxazulula amaphutha okuklama e-MCPCB ngaphambi kokwenziwa. Sihlinzeka ngezinsizakalo zokubuyekezwa komklamo, ukwesekwa kokulingisa ukushisa, kanye nokuhlaziywa kokwenzeka kokukhiqiza ukuqinisekisa ukuthi imikhiqizo yakho ihlangabezana nezidingo zokusebenza kanye nemigomo yezindleko zokukhiqiza. Xhumana nethimba lethu lobuchwepheshe ukuze uxoxe ngokuthi singaluthuthukisa kanjani umklamo wakho olandelayo we-MCPCB ukuze ube nokuthembeka kanye nokukhiqizwa.