來自深圳的一位客(ke)戶(hu)發來了一張圖片，如下圖所(suo)示，看圖片可知，上面印著這樣的絲(si)印：DOWO BFR 845，這時候很多客(ke)戶(hu)就好奇：DOWO是(shi)什(shen)么(me)(me)(me)？代(dai)表(biao)什(shen)么(me)(me)(me)意(yi)思？中文是(shi)什(shen)么(me)(me)(me)意(yi)思？是(shi)屬于哪家(jia)公司的？這個二(er)極管(guan)(guan)是(shi)什(shen)么(me)(me)(me)類型的二(er)極管(guan)(guan)？字(zi)(zi)母BFR是(shi)什(shen)么(me)(me)(me)意(yi)思？代(dai)表(biao)什(shen)么(me)(me)(me)含(han)義(yi)？數字(zi)(zi)845又代(dai)表(biao)什(shen)么(me)(me)(me)？有什(shen)么(me)(me)(me)含(han)義(yi)呢？

針對(dui)客戶提出(chu)的(de)問題，接下(xia)來(lai)TVS二(er)極(ji)管(guan)(guan)廠家(jia)東(dong)(dong)(dong)沃(wo)(wo)電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)（DOWOSEMI）一(yi)一(yi)為您(nin)做詳細解答。DOWO，中文：東(dong)(dong)(dong)沃(wo)(wo)，是(shi)東(dong)(dong)(dong)沃(wo)(wo)電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)（DOWOSEMI）英(ying)文品(pin)牌的(de)縮(suo)寫，隸屬(shu)于杭(hang)州(zhou)(zhou)東(dong)(dong)(dong)沃(wo)(wo)電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)科(ke)(ke)技有限(xian)公司旗(qi)下(xia)品(pin)牌。對(dui)于東(dong)(dong)(dong)沃(wo)(wo)電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)的(de)名(ming)稱(cheng)叫法(fa)有很多種，常見的(de)有：DOWO、東(dong)(dong)(dong)沃(wo)(wo)、DOWO/東(dong)(dong)(dong)沃(wo)(wo)、東(dong)(dong)(dong)沃(wo)(wo)DOWO、DOWOSEMI、東(dong)(dong)(dong)沃(wo)(wo)電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)DOWOSEMI、杭(hang)州(zhou)(zhou)東(dong)(dong)(dong)沃(wo)(wo)、杭(hang)州(zhou)(zhou)東(dong)(dong)(dong)沃(wo)(wo)DOWO、杭(hang)州(zhou)(zhou)東(dong)(dong)(dong)沃(wo)(wo)電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)、東(dong)(dong)(dong)沃(wo)(wo)電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)科(ke)(ke)技有限(xian)公司、東(dong)(dong)(dong)沃(wo)(wo)（杭(hang)州(zhou)(zhou)）電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)科(ke)(ke)技有限(xian)公司、杭(hang)州(zhou)(zhou)東(dong)(dong)(dong)沃(wo)(wo)電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)科(ke)(ke)技有限(xian)公司等等。東(dong)(dong)(dong)沃(wo)(wo)DOWO是(shi)一(yi)家(jia)專業高品(pin)質電(dian)(dian)(dian)(dian)(dian)路保(bao)(bao)護器(qi)件廠商和優質保(bao)(bao)護方(fang)(fang)案服(fu)務商，主營產品(pin)涵蓋：TVS二(er)極(ji)管(guan)(guan)、ESD靜電(dian)(dian)(dian)(dian)(dian)保(bao)(bao)護二(er)極(ji)管(guan)(guan)、壓敏電(dian)(dian)(dian)(dian)(dian)阻MOV、陶(tao)瓷氣體(ti)(ti)放電(dian)(dian)(dian)(dian)(dian)管(guan)(guan)GDT、自恢(hui)(hui)復保(bao)(bao)險絲PPTC、半導體(ti)(ti)放電(dian)(dian)(dian)(dian)(dian)管(guan)(guan)TSS、穩壓二(er)極(ji)管(guan)(guan)Zener、整流(liu)二(er)極(ji)管(guan)(guan)STD、快恢(hui)(hui)復二(er)極(ji)管(guan)(guan)FR、肖特基(ji)二(er)極(ji)管(guan)(guan)SKY等等，免費方(fang)(fang)案優化設計、免費器(qi)件選型、免費EMC測試、免費樣品(pin)服(fu)務，竭(jie)誠(cheng)歡(huan)迎廣大新老客戶前來(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，具體是什么型號呢？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又代表什么？有什么含義呢？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，生產于2022年第32周。好了，關于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