Don saduwa da buƙatun thermal na aikace-aikacen, masu zanen kaya suna buƙatar kwatanta halayen thermal na nau'ikan fakitin semiconductor daban-daban.A cikin wannan labarin, Nexperia yayi magana game da hanyoyin zafi na fakitin haɗin waya da fakitin haɗin guntu domin masu ƙira su zaɓi fakitin da ya dace.
Yadda ake Samun Gudanar da Zazzagewa a cikin Na'urorin haɗi na Waya
Tushen zafi na farko a cikin na'urar da aka haɗa waya ta fito ne daga wurin junction point zuwa ga haɗin gwiwar solder akan allon da aka buga (PCB), kamar yadda aka nuna a cikin hoto 1. Biye da sauƙi algorithm na ƙima na farko, tasirin ikon sakandare. tashar amfani (wanda aka nuna a cikin adadi) ba shi da mahimmanci a cikin lissafin juriya na thermal.
Tashoshin zafi a cikin na'urorin haɗin waya
Tashoshin tafiyar da zafi biyu a cikin na'urar SMD
Bambanci tsakanin kunshin SMD da fakitin haɗin waya dangane da ɓarkewar zafi shine cewa za'a iya watsar da zafi daga mahaɗin na'urar tare da tashoshi daban-daban guda biyu, watau ta hanyar jagorar jagora (kamar yadda yake a cikin fakitin haɗin waya) da kuma ta hanyar clip frame.
Canja wurin zafi a cikin kunshin haɗin guntu
Ma'anar juriya na thermal na junction zuwa haɗin gwiwa mai siyarwar Rth (j-sp) yana daɗa rikitarwa ta kasancewar haɗin haɗin gwiwa guda biyu.Waɗannan wuraren tunani na iya samun yanayin zafi daban-daban, yana haifar da juriya na thermal ya zama cibiyar sadarwa iri ɗaya.
Nexperia yana amfani da hanya iri ɗaya don fitar da ƙimar Rth(j-sp) don na'urorin haɗin guntu da waya.Wannan ƙimar tana siffanta babbar hanyar zafi daga guntu zuwa firam ɗin jagora zuwa gaɓar mahaɗin, yana yin ƙima ga na'urorin haɗin guntu kama da ƙimar na'urorin da aka siyar da waya a cikin shimfidar PCB iri ɗaya.Koyaya, tashar ta biyu ba ta cika amfani da ita yayin fitar da ƙimar Rth(j-sp), don haka gabaɗayan ƙarfin zafi na na'urar ya fi girma.
A gaskiya ma, tashar tashoshi mai mahimmanci na biyu yana ba masu zanen kaya damar inganta ƙirar PCB.Misali, don na'urar da aka siyar da waya, zafi zai iya bazuwa ta hanyar daya kawai (yawancin zafin diode yana watsawa ta hanyar fil ɗin cathode);don na'urar da ke da alaƙa, za a iya watsar da zafi a duka tashoshi biyu.
Kwaikwayi Ayyukan Zazzabi na Na'urorin Semiconductor
Gwaje-gwajen kwaikwaiyo sun nuna cewa za a iya inganta aikin zafi sosai idan duk tashoshin na'urori akan PCB suna da hanyoyin zafi.Misali, a cikin PMEG6030ELP diode na CFP5 (Hoto na 3), 35% na zafi ana canjawa wuri zuwa fitilun anode ta ƙuƙumman jan ƙarfe kuma 65% ana canjawa wuri zuwa fil ɗin cathode ta hanyar firam ɗin jagora.
CFP5 kunshin diode
“Gwajin kwaikwaiyo ya tabbatar da cewa raba magudanar zafi zuwa sassa biyu (kamar yadda aka nuna a hoto na 4) ya fi dacewa da yaɗuwar zafi.
Idan 1 cm² heatsink ya kasu kashi biyu na 0.5 cm² da aka sanya a ƙarƙashin kowane tashoshi biyu, adadin ƙarfin da diode zai iya watsawa a daidai wannan zafin jiki yana ƙaruwa da 6%.
Heatsinks na 3cm² biyu suna haɓaka ɓarnawar wutar lantarki da kusan kashi 20 cikin ɗari idan aka kwatanta da daidaitaccen ƙirar ƙirar zafi ko 6 cm² heatsink da aka haɗe kawai a cathode.
Sakamakon Kwaikwayo na thermal tare da ɗumbin zafi a wurare daban-daban da wuraren allo
Nexperia yana Taimakawa Masu Zane-zane Zaɓan Fakitin Mafi dacewa da Aikace-aikacen su
Wasu masana'antun na'urorin semiconductor ba sa ba masu ƙira da mahimman bayanai don tantance nau'in fakitin da zai samar da ingantaccen aikin zafi don aikace-aikacen su.A cikin wannan labarin, Nexperia ya bayyana hanyoyin zafi a cikin haɗin waya da na'urorin haɗin guntu don taimakawa masu ƙira su yanke shawara mafi kyau don aikace-aikacen su.
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Lokacin aikawa: Satumba-13-2023