Kuti akwaniritse zofunikira zamafuta pakugwiritsa ntchito, opanga amayenera kufananiza mawonekedwe amafuta amitundu yosiyanasiyana ya phukusi la semiconductor.M'nkhaniyi, Nexperia ikukamba za njira zotentha zamapaketi ake a waya ndi ma chip bond phukusi kuti opanga athe kusankha phukusi loyenera.
Momwe Mayendetsedwe Otenthetsera Amakwaniritsidwira mu Zida Zomangirira Waya
Chiwopsezo choyambirira cha kutentha mu chipangizo chopangidwa ndi waya chimachokera kumalo owonetserako ophatikizira kuzitsulo za solder pa bolodi losindikizidwa (PCB), monga momwe tawonetsera pa Chithunzi 1. Potsatira ndondomeko yosavuta ya kuyerekezera koyamba, zotsatira za mphamvu yachiwiri. njira yogwiritsira ntchito (yowonetsedwa pachithunzi) ndi yosafunika pakuwerengera kukana kutentha.
Njira zotenthetsera pazida zomangira mawaya
Njira ziwiri zoyendetsera matenthedwe mu chipangizo cha SMD
Kusiyanitsa pakati pa phukusi la SMD ndi phukusi lomangidwa ndi waya potengera kutentha kwa kutentha ndikuti kutentha kochokera pamgwirizano wa chipangizocho kumatha kutayidwa panjira ziwiri zosiyana, mwachitsanzo, kudzera mu leadframe (monga momwe zimakhalira ndi ma phukusi omangidwa ndi waya) ndi kudzera pa clip chimango.
Kutumiza kutentha mu phukusi lopangidwa ndi chip
Tanthauzo la kukana kwa kutentha kwa mphambano yopita ku solder joint Rth (j-sp) kumakhala kovuta kwambiri chifukwa cha kukhalapo kwa maumboni awiri a solder.Mfundo zolozerazi zitha kukhala ndi kutentha kosiyanasiyana, zomwe zimapangitsa kukana kwamafuta kukhala netiweki yofananira.
Nexperia imagwiritsa ntchito njira yomweyo kuchotsa mtengo wa Rth(j-sp) pazida zonse zolumikizidwa ndi chip ndi waya.Mtengo uwu umadziwika ndi njira yayikulu yotenthetsera kuchokera ku chip kupita ku leadframe kupita kumalo olumikizirana, kupanga zikhalidwe za zida zolumikizidwa ndi chip zofanana ndi zomwe zida zogulitsidwa ndi waya zomwe zimafanana ndi PCB.Komabe, tchanelo chachiwiri sichimagwiritsidwa ntchito mokwanira pochotsa mtengo wa Rth(j-sp), kotero mphamvu yakutentha ya chipangizocho nthawi zambiri imakhala yokwera.
M'malo mwake, njira yachiwiri yowunikira kutentha imapatsa opanga mwayi wokonza mapangidwe a PCB.Mwachitsanzo, pa chipangizo chogulitsidwa ndi waya, kutentha kumangotha kupyolera mu njira imodzi (kutentha kwakukulu kwa diode kumachotsedwa kudzera pa pini ya cathode);pa chipangizo cholumikizidwa ndi clip, kutentha kumatha kutayidwa pamaterminal onse awiri.
Kuyerekezera kwa Kutentha kwa Magwiridwe a Semiconductor Devices
Kuyesera koyerekeza kwawonetsa kuti magwiridwe antchito amatha kuwongolera bwino ngati ma terminals onse pa PCB ali ndi njira zotentha.Mwachitsanzo, mu CFP5-packaged PMEG6030ELP diode (Chithunzi 3), 35% ya kutentha imasamutsidwa ku zikhomo za anode kupyolera muzitsulo zamkuwa ndipo 65% imasamutsidwa ku zikhomo za cathode kupyolera muzitsulo.
CFP5 mmatumba diode
"Kuyesa koyerekeza kwatsimikizira kuti kugawaniza kutentha m'magawo awiri (monga momwe tawonetsera pa Chithunzi 4) ndikothandiza kwambiri kuti pakhale kutentha.
Ngati 1 cm² heatsink igawika kukhala ma heatsink awiri a 0.5 cm² oyikidwa pansi pa ma terminals awiriwa, kuchuluka kwa mphamvu yomwe imatha kutayidwa ndi diode pa kutentha komweko kumawonjezeka ndi 6%.
Ma heatsink awiri a 3 cm² amawonjezera kutayika kwa mphamvu ndi pafupifupi 20 peresenti poyerekeza ndi kapangidwe kake ka kutentha kwapakati kapena 6 cm² heatsink yongomangidwa pa cathode.
Zotsatira Zoyezetsa Zotentha Zokhala Ndi Ma Sinks Otentha M'madera Osiyanasiyana ndi Malo A Board
Nexperia Imathandiza Opanga Kusankha Phukusi Loyenerana ndi Ntchito Zawo
Ena opanga zida za semiconductor sapatsa opanga zidziwitso zofunikira kuti adziwe mtundu wa phukusi womwe ungapereke magwiridwe antchito abwinoko pakugwiritsa ntchito kwawo.M'nkhaniyi, Nexperia ikufotokoza njira zotenthetsera pazida zake zomangira mawaya ndi ma chip kuti zithandizire opanga kupanga zisankho zabwino pazogwiritsa ntchito.
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Nthawi yotumiza: Sep-13-2023