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來源(yuan):發布(bu)時(shi)間(jian):2020-11-27 16:31:06點(dian)擊率(lv):
Schottky has three pin extraction methods: common cathode (the negative pole of the two tubes are connected), co-positive (the positive pole of the two tubes are connected) and series (the positive pole of one diode is connected to the negative pole of the other diode).
肖(xiao)特基(ji)二(er)極(ji)管是以(yi)金(jin)屬(shu)和(he)半(ban)導(dao)體觸(chu)模(mo)構成(cheng)的勢(shi)壘為(wei)根(gen)底(di)的二極管。它(ta)具(ju)有正(zheng)向(xiang)壓(ya)降(jiang)低(di)0.4V、開(kai)關(guan)速度極快,反向恢複(fu)時間很短(duan)(2-10ns納(na)秒(miao))等。缺點是(shi)反(fan)向漏(lou)電流較大(da),耐壓低,一般(ban)低於(yu)是一種低功(gong)耗、大電流、超(chao)高(gao)速(su)半導體(ti)器材(cai),多(duo)用於低電壓場(chang)合(he)。
分(fen)類(lei)肖特基二極管分為:插(cha)件(jian)(DO-41)和貼片(SOD,SOT)兩種(zhong)封裝(zhuang)方法。DO-41封裝的肖特基二極管一般作為高頻大電流整(zheng)流二極管(guan)、續(xu)流(liu)二極管或維護(hu)二極管使(shi)用(yong)。它有單管式(shi)和對管(雙(shuang)二極管)式兩種(zhong)封裝(zhuang)方法 。
肖特(te)基對管又(you)有共(gong)陰(yin)(兩管的(de)負極相(xiang)連)、共陽(兩管的正極相連(lian))和串聯(lian)(一隻(zhi)二極管的正極接(jie)另一(yi)隻二極管的負(fu)極)三種管腳引出方法 。