6. Hadin Kai
6.1 nau'in nau'in SOIC marufi yana da polarity.Alamar polarity: 1) kintinkiri, 2) alama, 3) notches da tsagi, 4) bevel
6.2 KASHIN SOP ko nau'in QFP yana da polarity.Polarity labeled :1) daraja/tsagi mai lakabi, 2) Maki ɗaya ya bambanta (girma/siffa) da sauran maki biyu/uku.
6.3 QFN nau'in encapsulation yana da polarity.Polarity nuna:1) aya daya ya bambanta da sauran maki biyu (girma/siffa), 2) hypotenuse nuna, 3) alama alama (bar/" + "alama / digo).
7. Ball Grid Array
7.1 Part polarity: daraja / tsagi / digo / da'irar;Polarity na PCB board: da'irar/digo/harafi "1 ko A"/ alamar bevel.Ma'anar polarity na ɓangaren yayi daidai da ma'anar polarity akan PCB.Hanyar gano juriya ta SMT
Gabaɗaya, akwai launuka 12 na masu adawa da zoben launi: launin ruwan kasa, ja, orange, rawaya, kore, shuɗi, shunayya, launin toka, fari, baki, zinare da azurfa.Daga cikin su, launuka goma na farko suna wakiltar 1 ~ 9 (baƙar fata tana wakiltar 0), kuma zinare da azurfa suna wakiltar kurakurai iri biyu (da ko ragi 5% da ƙari ko debe 10%).
Launuka biyu na farko suna wakiltar lambobi masu tsabta.Misali, orange da baki suna wakiltar lamba 30 (ba a ce juriya ita ce Yuro 30 ba), kuma zoben launi na uku yana wakiltar adadin sifili.Misali, idan zoben launi na uku ja ne, yana nufin lamba 30 tana biye da sifili biyu, kuma ƙimar juriyar wannan juriya ita ce Yuro 30 00 (€3k).
Zoben launi na ƙarshe shine ko dai zinariya ko azurfa.Misali, idan zoben launi na ƙarshe shine azurfa, juriya na juriya zai kasance tsakanin 3000 ohms da ƙari ko debe 10% (juriya ta gaskiya na juriya zata zama kowane takamaiman ƙima a cikin wannan kewayon).
SMT capacitance polarity hukunci da iya aiki ganewa
Capacitor an raba shi zuwa electrolytic capacitor da wafer capacitor.Siffar capacitor electrolytic shine Silinda, kuma saman Silinda an yi masa alama da girman ƙarfinsa, kuma yana da polarity (dogon ƙafa shine tabbataccen sanda, gajeriyar ƙafa kuma itace mara kyau).
A daya hannun, wafer capacitance ba shi da polarity.Gabaɗaya ana siffanta shi da da'ira kuma an yi masa alama da Lambobi uku, daga cikinsu lambobi na farko da na biyu suna wakiltar ƙimar ƙarfin ƙarfi kuma lamba ta uku tana wakiltar adadin sifili, kamar 233, wanda ke wakiltar ƙimar ƙarfin 23000PF ko 0.023 micromethod.
NeoDen yana ba da cikakkiyar mafita na layin taro na SMT, gami da tanda na sake fitarwa na SMT, injin siyar da igiyar ruwa, na'ura mai ɗaukar hoto da wuri, firintar manna mai siyarwa, Tanda Reflow, Mai ɗaukar PCB, Mai saukar da PCB, mai ɗaukar guntu, injin SMT AOI, injin SMT SPI, SMT X- Ray inji, SMT taro line kayan aiki, PCB samar Equipment SMT kayayyakin gyara, da dai sauransu kowane irin SMT inji za ka iya bukatar, da fatan za a tuntube mu don ƙarin bayani:
Hangzhou NeoDen Technology Co., Ltd
Yanar Gizo:www.smtneoden.com
Imel:info@neodentech.com
Lokacin aikawa: Nuwamba-06-2020