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來自深圳的一位客戶(hu)發來了一張圖(tu)片，如下(xia)圖(tu)所示(shi)，看圖(tu)片可知(zhi)，上面印著這樣的絲印：DOWO BFR 845，這時(shi)候很多客戶(hu)就(jiu)好奇：DOWO是什(shen)麼(ma)(ma)？代(dai)表什(shen)麼(ma)(ma)意(yi)思(si)(si)？中文是什(shen)麼(ma)(ma)意(yi)思(si)(si)？是屬於哪家公司的？這個二極(ji)管是什(shen)麼(ma)(ma)類(lei)型的二極(ji)管？字母BFR是什(shen)麼(ma)(ma)意(yi)思(si)(si)？代(dai)表什(shen)麼(ma)(ma)含義？數(shu)字845又代(dai)表什(shen)麼(ma)(ma)？有什(shen)麼(ma)(ma)含義呢？

針對(dui)(dui)客戶(hu)(hu)提(ti)出的問題，接下來(lai)TVS二(er)(er)(er)極(ji)管(guan)(guan)(guan)(guan)廠(chang)家東(dong)(dong)(dong)(dong)沃(wo)(wo)(wo)(wo)電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)（DOWOSEMI）一一為您做詳細解答。DOWO，中(zhong)文：東(dong)(dong)(dong)(dong)沃(wo)(wo)(wo)(wo)，是(shi)東(dong)(dong)(dong)(dong)沃(wo)(wo)(wo)(wo)電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)（DOWOSEMI）英文品(pin)(pin)牌的縮(suo)寫，隸(li)屬於(wu)杭(hang)(hang)州(zhou)東(dong)(dong)(dong)(dong)沃(wo)(wo)(wo)(wo)電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)科技(ji)有(you)限公(gong)司旗(qi)下品(pin)(pin)牌。對(dui)(dui)於(wu)東(dong)(dong)(dong)(dong)沃(wo)(wo)(wo)(wo)電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)的名稱叫法有(you)很(hen)多種，常(chang)見(jian)的有(you)：DOWO、東(dong)(dong)(dong)(dong)沃(wo)(wo)(wo)(wo)、DOWO/東(dong)(dong)(dong)(dong)沃(wo)(wo)(wo)(wo)、東(dong)(dong)(dong)(dong)沃(wo)(wo)(wo)(wo)DOWO、DOWOSEMI、東(dong)(dong)(dong)(dong)沃(wo)(wo)(wo)(wo)電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)DOWOSEMI、杭(hang)(hang)州(zhou)東(dong)(dong)(dong)(dong)沃(wo)(wo)(wo)(wo)、杭(hang)(hang)州(zhou)東(dong)(dong)(dong)(dong)沃(wo)(wo)(wo)(wo)DOWO、杭(hang)(hang)州(zhou)東(dong)(dong)(dong)(dong)沃(wo)(wo)(wo)(wo)電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)、東(dong)(dong)(dong)(dong)沃(wo)(wo)(wo)(wo)電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)科技(ji)有(you)限公(gong)司、東(dong)(dong)(dong)(dong)沃(wo)(wo)(wo)(wo)（杭(hang)(hang)州(zhou)）電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)科技(ji)有(you)限公(gong)司、杭(hang)(hang)州(zhou)東(dong)(dong)(dong)(dong)沃(wo)(wo)(wo)(wo)電(dian)(dian)(dian)(dian)子(zi)(zi)(zi)科技(ji)有(you)限公(gong)司等(deng)等(deng)。東(dong)(dong)(dong)(dong)沃(wo)(wo)(wo)(wo)DOWO是(shi)一家專業高(gao)品(pin)(pin)質電(dian)(dian)(dian)(dian)路保(bao)(bao)護器件廠(chang)商和優質保(bao)(bao)護方案服務(wu)商，主營(ying)產(chan)品(pin)(pin)涵蓋：TVS二(er)(er)(er)極(ji)管(guan)(guan)(guan)(guan)、ESD靜電(dian)(dian)(dian)(dian)保(bao)(bao)護二(er)(er)(er)極(ji)管(guan)(guan)(guan)(guan)、壓(ya)敏電(dian)(dian)(dian)(dian)阻MOV、陶瓷氣體(ti)放電(dian)(dian)(dian)(dian)管(guan)(guan)(guan)(guan)GDT、自恢復保(bao)(bao)險絲PPTC、半導體(ti)放電(dian)(dian)(dian)(dian)管(guan)(guan)(guan)(guan)TSS、穩壓(ya)二(er)(er)(er)極(ji)管(guan)(guan)(guan)(guan)Zener、整(zheng)流二(er)(er)(er)極(ji)管(guan)(guan)(guan)(guan)STD、快恢復二(er)(er)(er)極(ji)管(guan)(guan)(guan)(guan)FR、肖特基二(er)(er)(er)極(ji)管(guan)(guan)(guan)(guan)SKY等(deng)等(deng)，免(mian)費(fei)方案優化設計(ji)、免(mian)費(fei)器件選型、免(mian)費(fei)EMC測試、免(mian)費(fei)樣品(pin)(pin)服務(wu)，竭誠歡迎(ying)廣大新老客戶(hu)(hu)前來(lai)咨詢。

查看圖片中的電子元器件可知，這顆物料是一個雙向、SMC封裝的TVS二極管，具體是什麼型號呢？就要看絲印符號BFR，查詢東沃電子產品手冊「TVS-SMCJ Series Datasheet」可知，絲印BFR，對應的雙向TVS管型號是：SMCJ40CA，工作電壓40V、擊穿電壓44.4V-49.1、鉗位電壓64.5V、峰值脈沖電流23.26A、峰值脈沖功率1500SMC（DO-214AB）封裝，具體參數詳情詳見產品手冊。

SMCJ40CA絲印數字845又代表什麼？有什麼含義呢？這個是東沃TVS二極管的生產周期碼，其中8代表的是2018年，45代表的是2018年的第45周。再舉個例子：DOWO BFR 232雙向，經查詢可知是TVS二極管型號：SMCJ40CA，來自品牌DOWO東沃，生產於2022年第32周。好了，關於今天的話題就分享到這兒了，相信您對DOWO東沃品牌和東沃TVS二極管絲印符號含義已經有了新的認識了。想了解更多，可咨詢東沃電產品工程師：136 7581 6901（微信同號）朱工