Sashe na 1 Hannun GANE gama gari na abubuwan haɗin polar SMT

Ya kamata a biya kulawa ta musamman ga abubuwan polarity a cikin tsarin PCBA, kamar yadda kurakuran bangaren jagoranci na iya haifar da hatsarori da gazawar dukkan hukumar PCBA.Don haka, yana da matukar mahimmanci ga injiniyoyi da ma'aikatan samarwa su fahimci abubuwan polarity na SMT.

I. Ma'anar polarity
Polarity yana nufin cewa ingantattun sanduna mara kyau da mara kyau ko fil ɗin farko na abubuwan haɗin gwiwa suna kan hanya ɗaya tare da na PCB (allon da'ira da aka buga).Idan shugabanci na abubuwan da aka gyara da PCB bai dace ba, ana kiran shi mummunan baya.

II.Hanyar gano polarity
1. Resistor na guntu nau'in ne ba tare da polarity

2. Capacitor (Capacitor)

2.1 Masu ƙarfin yumbu ba su da iyakacin duniya

2.2 Tantalum capacitors ne iyakacin duniya.Kwamitin PCB da na'urar tabbataccen alamar sandar sanda: 1) Alamar ribbon;2) Alama "+";3) Tambarin bevel.

2.3 Aluminum electrolytic capacitor yana da polarity.Alamar sashi: band ɗin launi yana wakiltar korau;Alamar PCB: Kintinkiri ko “+” na wakiltar madaidaicin sanda.

3. Inductor

3.1 Babu buƙatar polarity don fakitin ƙarshen walda guda biyu kamar guntu nada.

3.2 Multi-pin inductors suna da buƙatun polarity.Alamar sashe: digo/” 1 “yana tsaye ga maƙasudin polarity;Alama akan PCB: Dot/da'irar/"* "yana nuna rashin daidaituwa.

4. Haske Emitting Diode

4.1 SMT tebur sitika LED yana da polarity.Sashe mara kyau alama: kore mara kyau;PCB korau alama: 1) a tsaye mashaya, 2) kintinkiri, 3) siliki allo mai kaifi Angle;4) Buga allo shine wakilin akwatin "na musamman".

5. Diode (9W)
5.1 Diode tare da manna tebur na SMT yana da polarity.Sashe mara kyau: 1) kintinkiri, 2) tsagi, 3) alamar launi (vitreous);PCB daki na zamani:1) sandar tsaye, 2) kintinkiri, 3) ƙaho bugu na allo, 4) Akwatin “Mai Zamantakewa”.

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:

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