半(ban)(ban)導(dao)體(ti)(ti)放電(dian)(dian)管(guan)，英文簡稱TSS，是一種(zhong)電(dian)(dian)壓開關(guan)型(xing)瞬(shun)態抑制(zhi)二極(ji)管(guan)，也叫涌抑制(zhi)晶(jing)體(ti)(ti)管(guan)，或導(dao)體(ti)(ti)放電(dian)(dian)管(guan)，或固體(ti)(ti)放電(dian)(dian)管(guan)等(deng)(deng)等(deng)(deng)。半(ban)(ban)導(dao)體(ti)(ti)放電(dian)(dian)管(guan)是利(li)用半(ban)(ban)導(dao)體(ti)(ti)工(gong)藝制(zhi)成的(de)保護器(qi)件，專(zhuan)業(ye)被動保護器(qi)件供應廠商東沃(wo)電(dian)(dian)子自主(zhu)研發、生產及銷售多種(zhong)規格、型(xing)號的(de)半(ban)(ban)導(dao)體(ti)(ti)放電(dian)(dian)管(guan)，種(zhong)類繁多，型(xing)號齊(qi)全，產品(pin)主(zhu)要(yao)用于(yu)信號電(dian)(dian)路的(de)防雷(lei)保護，不能用在(zai)電(dian)(dian)源端口。半(ban)(ban)導(dao)體(ti)(ti)放電(dian)(dian)管(guan)的(de)通流容量一般最高可達(da)到150A（8/20uS）。

眾所周知(zhi)，半(ban)(ban)導(dao)體(ti)放電(dian)(dian)管(guan)(guan)和TVS管(guan)(guan)都是(shi)利用半(ban)(ban)導(dao)體(ti)工藝制(zhi)成的(de)限壓保(bao)護(hu)器(qi)(qi)件，然而(er)，半(ban)(ban)導(dao)體(ti)放電(dian)(dian)管(guan)(guan)是(shi)電(dian)(dian)壓開關(guan)型的(de)，TVS管(guan)(guan)是(shi)電(dian)(dian)壓鉗位(wei)型的(de)。半(ban)(ban)導(dao)體(ti)放電(dian)(dian)管(guan)(guan)在響(xiang)應時間、結(jie)電(dian)(dian)容方面與(yu)TVS管(guan)(guan)相(xiang)似，易制(zhi)成表(biao)貼器(qi)(qi)件，適合在單(dan)板(ban)上(shang)使用。半(ban)(ban)導(dao)體(ti)放電(dian)(dian)管(guan)(guan)適合于信(xin)號(hao)電(dian)(dian)平較(jiao)高的(de)信(xin)號(hao)電(dian)(dian)路(lu)保(bao)護(hu)。

在(zai)工(gong)作之中，半(ban)導(dao)體放(fang)電(dian)(dian)(dian)管發生動作后，會將(jiang)過電(dian)(dian)(dian)壓從(cong)擊(ji)穿電(dian)(dian)(dian)壓值(zhi)附近下拉(la)到接近0V的(de)(de)水平，這時(shi)(shi)二極管的(de)(de)結(jie)壓降(jiang)小，所以用(yong)于信(xin)號電(dian)(dian)(dian)平較高的(de)(de)線路(lu)（例(li)如：模擬用(yong)戶線、ADSL等）保護時(shi)(shi)通流量比TVS管大，保護效果也比TVS管好。故，半(ban)導(dao)體放(fang)電(dian)(dian)(dian)管適合于信(xin)號電(dian)(dian)(dian)平較高的(de)(de)信(xin)號線路(lu)的(de)(de)保護。

在(zai)實(shi)際應用(yong)中，在(zai)使用(yong)半(ban)(ban)導體放電(dian)(dian)管需要注意的一個問題是：半(ban)(ban)導體放電(dian)(dian)管在(zai)過電(dian)(dian)壓作用(yong)下擊穿后(hou)，當流過TSS的電(dian)(dian)流值(zhi)(zhi)下降到臨界(jie)(jie)值(zhi)(zhi)以下后(hou)，TSS才恢(hui)復開路狀態，因此TSS在(zai)信(xin)號(hao)線路中使用(yong)時(shi)，信(xin)號(hao)線路的常態電(dian)(dian)流應小于TSS管的臨界(jie)(jie)恢(hui)復電(dian)(dian)流。臨界(jie)(jie)恢(hui)復電(dian)(dian)流值(zhi)(zhi)隨(sui)TSS管的型號(hao)和(he)設計應用(yong)場合的不同而(er)不同，使用(yong)時(shi)應注意在(zai)器件手冊中查明(ming)所用(yong)具體型號(hao)的確切值(zhi)(zhi)。

TSS管的擊穿電壓（min(UBR））、通流容量是電路設計時應重點考慮的。在信號回路中時，應當有：min(UBR)≥(1.2～1.5)Umax，式中Umax為信號回路的峰值電壓。TSS管的失效模式主要是短路。但當通過的過電流太大時，也可能造成TSS管被炸裂而開路。TSS管的使用壽命相對較長。東沃電子，不僅是一家專業的被動保護器件供應廠商，同時也是一體化電路解決方案的服務提供商，免費指導選(xuan)型、設計方案、樣品申請。欲想了解更多有關半導體(ti)放電(dian)管應用知識，東沃電子，隨(sui)時(shi)等您來撩！