GPP和OJ芯(xin)片(pian)(pian)工艺(yi)的(de)(de)(de)(de)(de)区别就(jiu)(jiu)在P-N结(jie)的(de)(de)(de)(de)(de)保(bao)护上。OJ结(jie)构(gou)(gou)的(de)(de)(de)(de)(de)产(chan)品(pin)(pin)，采用(yong)涂胶(jiao)(jiao)保(bao)护结(jie)，然(ran)后在200度(du)左右(you)温(wen)度(du)进(jin)行(xing)固化(hua)。保(bao)护P-N结(jie)获得电(dian)压。GPP结(jie)构(gou)(gou)的(de)(de)(de)(de)(de)产(chan)品(pin)(pin)，芯(xin)片(pian)(pian)的(de)(de)(de)(de)(de)P-N结(jie)是(shi)(shi)在钝化(hua)玻璃(li)的(de)(de)(de)(de)(de)保(bao)护之下(xia)，玻璃(li)是(shi)(shi)将(jiang)玻璃(li)粉(fen)采用(yong)800度(du)左右(you)的(de)(de)(de)(de)(de)烧结(jie)熔化(hua)，冷却后形成玻璃(li)层。这玻璃(li)层和芯(xin)片(pian)(pian)熔为一(yi)体(ti)，无法用(yong)机(ji)械的(de)(de)(de)(de)(de)方法分开。而(er)OJ的(de)(de)(de)(de)(de)保(bao)护胶(jiao)(jiao)，是(shi)(shi)覆盖在P-N结(jie)的(de)(de)(de)(de)(de)表面(mian)。3．特性比较1）由(you)于结(jie)构(gou)(gou)的(de)(de)(de)(de)(de)不(bu)同(tong)，当(dang)有(you)外界(jie)应力产(chan)生(sheng)（比如(ru)(ru)进(jin)行(xing)弯角处理），器件进(jin)行(xing)冷热冲击(ji)，如(ru)(ru)果塑料封(feng)装体(ti)有(you)漏气，等(deng)(deng)等(deng)(deng)情况下(xia)。OJ的(de)(de)(de)(de)(de)产(chan)品(pin)(pin)，其保(bao)护胶(jiao)(jiao)和硅片(pian)(pian)结(jie)合的(de)(de)(de)(de)(de)不(bu)牢固，就(jiu)(jiu)会(hui)出(chu)(chu)现(xian)保(bao)护不(bu)好(hao)的(de)(de)(de)(de)(de)情况，使器件出(chu)(chu)现(xian)一(yi)定比率的(de)(de)(de)(de)(de)失(shi)效。GPP产(chan)品(pin)(pin)则不(bu)会(hui)出(chu)(chu)现(xian)类(lei)似的(de)(de)(de)(de)(de)情况。2）GPP二极(ji)管的(de)(de)(de)(de)(de)可靠性高。首先(xian)，GPP常(chang)温(wen)下(xia)，漏电(dian)比OJ的(de)(de)(de)(de)(de)就(jiu)(jiu)要(yao)小(xiao)。尤其重要(yao)的(de)(de)(de)(de)(de)是(shi)(shi)HTRB（高温(wen)反(fan)向偏置，是(shi)(shi)衡量(liang)产(chan)品(pin)(pin)可靠性的(de)(de)(de)(de)(de)重要(yao)标(biao)志参数）GPP要(yao)好(hao)很(hen)多，OJ的(de)(de)(de)(de)(de)产(chan)品(pin)(pin)能(neng)承受100度(du)左右(you)的(de)(de)(de)(de)(de)HTRB。而(er)GPP在温(wen)度(du)达到150度(du)时，仍然(ran)表现(xian)非常(chang)出(chu)(chu)色。4．说明：以前(qian)OJ的(de)(de)(de)(de)(de)产(chan)品(pin)(pin)限于DO系列的(de)(de)(de)(de)(de)轴(zhou)向封(feng)装，所以很(hen)多客户都使用(yong)片(pian)(pian)式封(feng)装（SMD）产(chan)品(pin)(pin)。因为片(pian)(pian)式产(chan)品(pin)(pin)，当(dang)时只能(neng)使用(yong)GPP芯(xin)片(pian)(pian)进(jin)行(xing)封(feng)装。但(dan)是(shi)(shi)，现(xian)在也出(chu)(chu)现(xian)了片(pian)(pian)式封(feng)装OJ产(chan)品(pin)(pin)。所以在选用(yong)上一(yi)定要(yao)注意分清(qing)。MUR1640CA是(shi)(shi)什么类(lei)型的(de)(de)(de)(de)(de)管子？TO263封(feng)装的(de)(de)(de)(de)(de)快恢复二极(ji)管MURF2040CT

继(ji)(ji)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)并(bing)联快(kuai)(kuai)恢(hui)(hui)复二(er)极(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)路形式见图(tu)1，其作(zuo)用主要是为了保护(hu)晶(jing)体管(guan)(guan)(guan)(guan)(guan)(guan)等驱动(dong)元(yuan)器(qi)(qi)(qi)件(jian)。流(liu)经(jing)线(xian)(xian)(xian)(xian)圈(quan)的(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)变(bian)(bian)化时(shi)，线(xian)(xian)(xian)(xian)圈(quan)会(hui)产(chan)(chan)生(sheng)(sheng)自(zi)(zi)激电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)来(lai)抑制电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)的(de)(de)(de)变(bian)(bian)化，当(dang)线(xian)(xian)(xian)(xian)圈(quan)中(zhong)的(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)变(bian)(bian)化越(yue)快(kuai)(kuai)时(shi)，所产(chan)(chan)生(sheng)(sheng)的(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)越(yue)高。在(zai)(zai)继(ji)(ji)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)开通(tong)(tong)到(dao)关(guan)断的(de)(de)(de)瞬(shun)间(jian)，由于线(xian)(xian)(xian)(xian)圈(quan)有电(dian)(dian)(dian)(dian)(dian)(dian)(dian)感(gan)的(de)(de)(de)性质，所以瞬(shun)间(jian)会(hui)在(zai)(zai)继(ji)(ji)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)的(de)(de)(de)线(xian)(xian)(xian)(xian)圈(quan)的(de)(de)(de)低电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)端产(chan)(chan)生(sheng)(sheng)一(yi)个瞬(shun)间(jian)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)尖峰,通(tong)(tong)常能高达数十(shi)倍(bei)的(de)(de)(de)线(xian)(xian)(xian)(xian)圈(quan)额定工作(zuo)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)。当(dang)图(tu)中(zhong)晶(jing)体管(guan)(guan)(guan)(guan)(guan)(guan)VT由导(dao)通(tong)(tong)变(bian)(bian)为截止时(shi)，流(liu)经(jing)继(ji)(ji)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)线(xian)(xian)(xian)(xian)圈(quan)的(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)将迅速减小，这时(shi)线(xian)(xian)(xian)(xian)圈(quan)会(hui)产(chan)(chan)生(sheng)(sheng)很高的(de)(de)(de)自(zi)(zi)感(gan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)动(dong)势(shi)与电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)叠加后加在(zai)(zai)VT的(de)(de)(de)c、e两极(ji)(ji)间(jian)，会(hui)使晶(jing)体管(guan)(guan)(guan)(guan)(guan)(guan)击(ji)穿，并(bing)联上快(kuai)(kuai)恢(hui)(hui)复二(er)极(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)后，即可(ke)将线(xian)(xian)(xian)(xian)圈(quan)的(de)(de)(de)自(zi)(zi)感(gan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)动(dong)势(shi)钳位(wei)于快(kuai)(kuai)恢(hui)(hui)复二(er)极(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)正(zheng)向导(dao)通(tong)(tong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)，此值硅(gui)管(guan)(guan)(guan)(guan)(guan)(guan)约，锗管(guan)(guan)(guan)(guan)(guan)(guan)约，从而避免击(ji)穿晶(jing)体管(guan)(guan)(guan)(guan)(guan)(guan)等驱动(dong)元(yuan)器(qi)(qi)(qi)件(jian)。并(bing)联快(kuai)(kuai)恢(hui)(hui)复二(er)极(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)时(shi)一(yi)定要注意快(kuai)(kuai)恢(hui)(hui)复二(er)极(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)极(ji)(ji)性不可(ke)接(jie)反(fan)，否则容易(yi)损坏晶(jing)体管(guan)(guan)(guan)(guan)(guan)(guan)等驱动(dong)元(yuan)器(qi)(qi)(qi)件(jian)。继(ji)(ji)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)线(xian)(xian)(xian)(xian)圈(quan)断电(dian)(dian)(dian)(dian)(dian)(dian)(dian)瞬(shun)间(jian)，线(xian)(xian)(xian)(xian)圈(quan)上可(ke)产(chan)(chan)生(sheng)(sheng)高于线(xian)(xian)(xian)(xian)圈(quan)额定工作(zuo)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)值30倍(bei)以上的(de)(de)(de)反(fan)峰电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)，对电(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)线(xian)(xian)(xian)(xian)路有极(ji)(ji)大的(de)(de)(de)危害(hai)，通(tong)(tong)常采用并(bing)联瞬(shun)态(tai)抑制（又叫削峰）快(kuai)(kuai)恢(hui)(hui)复二(er)极(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)或电(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻的(de)(de)(de)方法加以抑制，使反(fan)峰电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)不超过50V，但并(bing)联快(kuai)(kuai)恢(hui)(hui)复二(er)极(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)会(hui)延长继(ji)(ji)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)的(de)(de)(de)释放时(shi)间(jian)3~5倍(bei)。天津快(kuai)(kuai)恢(hui)(hui)复二(er)极(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)MURB1060MURF2020CT是什么类型的(de)(de)(de)管(guan)(guan)(guan)(guan)(guan)(guan)子(zi)？

有一种二(er)(er)极(ji)管(guan)(guan)叫做SONIC二(er)(er)极(ji)管(guan)(guan)，其(qi)反(fan)(fan)(fan)向(xiang)(xiang)(xiang)(xiang)回(hui)复(fu)(fu)(fu)时间较(jiao)为(wei)(wei)长，约～µs，软度因(yin)子在(zai)(zai)(zai)。在(zai)(zai)(zai)制(zhi)(zhi)造中(zhong)除了(le)使用(yong)(yong)(yong)平面(mian)结(jie)终止结(jie)构(gou)，玻璃钝化(hua)(hua)并(bing)有硅(gui)橡胶保(bao)护外(wai)，还使用(yong)(yong)(yong)了(le)从硅(gui)片背面(mian)开(kai)展(zhan)深扩散(san)磷和(he)(he)控制(zhi)(zhi)轴(zhou)向(xiang)(xiang)(xiang)(xiang)寿(shou)命(ming)抑制(zhi)(zhi)因(yin)素，使迅速二(er)(er)极(ji)管(guan)(guan)的(de)(de)(de)(de)反(fan)(fan)(fan)向(xiang)(xiang)(xiang)(xiang)恢(hui)(hui)复(fu)(fu)(fu)电(dian)流(liu)衰减较(jiao)慢，具反(fan)(fan)(fan)向(xiang)(xiang)(xiang)(xiang)“软恢(hui)(hui)复(fu)(fu)(fu)”特点，防(fang)范(fan)在(zai)(zai)(zai)高频(pin)应(ying)用(yong)(yong)(yong)时在(zai)(zai)(zai)硬(ying)关(guan)(guan)断过(guo)程中(zhong)产生过(guo)高的(de)(de)(de)(de)反(fan)(fan)(fan)向(xiang)(xiang)(xiang)(xiang)尖峰电(dian)压，维(wei)护了(le)开(kai)关(guan)(guan)器件及其(qi)二(er)(er)极(ji)管(guan)(guan)自身。该(gai)(gai)二(er)(er)极(ji)管(guan)(guan)在(zai)(zai)(zai)整个工作温(wen)度范(fan)围内性能安定，并(bing)且对(dui)于温(wen)度的(de)(de)(de)(de)变化(hua)(hua)正向(xiang)(xiang)(xiang)(xiang)电(dian)压降的(de)(de)(de)(de)变化(hua)(hua)可以忽视不计(ji)。该(gai)(gai)二(er)(er)极(ji)管(guan)(guan)是为(wei)(wei)高频(pin)应(ying)用(yong)(yong)(yong)设(she)计(ji)的(de)(de)(de)(de)，在(zai)(zai)(zai)高频(pin)应(ying)用(yong)(yong)(yong)时安定确实(shi)。新的(de)(de)(de)(de)迅速软恢(hui)(hui)复(fu)(fu)(fu)二(er)(er)极(ji)管(guan)(guan)——SONIC二(er)(er)极(ji)管(guan)(guan)系列克服了(le)这(zhei)些缺陷，它(ta)们的(de)(de)(de)(de)优(you)点为(wei)(wei)：1．并(bing)联二(er)(er)极(ji)管(guan)(guan)工作时正向(xiang)(xiang)(xiang)(xiang)电(dian)压降Vf与温(wen)度无(wu)关(guan)(guan)；2．阻断电(dian)压平稳，漏电(dian)流(liu)比掺金和(he)(he)铂的(de)(de)(de)(de)小(xiao)；3．迅速软恢(hui)(hui)复(fu)(fu)(fu)二(er)(er)极(ji)管(guan)(guan)在(zai)(zai)(zai)高温(wen)下反(fan)(fan)(fan)向(xiang)(xiang)(xiang)(xiang)漏电(dian)流(liu)从25℃到(dao)125℃比掺铂FRED少50%。SONIC二(er)(er)极(ji)管(guan)(guan)使用(yong)(yong)(yong)磷深扩散(san)和(he)(he)轴(zhou)向(xiang)(xiang)(xiang)(xiang)寿(shou)命(ming)抑制(zhi)(zhi)因(yin)素，电(dian)压从600V至(zhi)1800V，如图3所(suo)(suo)示。在(zai)(zai)(zai)硼中(zhong)受控的(de)(de)(de)(de)轴(zhou)向(xiang)(xiang)(xiang)(xiang)寿(shou)命(ming)抑制(zhi)(zhi)因(yin)素用(yong)(yong)(yong)来(lai)支配区(qu)(qu)域1中(zhong)空(kong)穴的(de)(de)(de)(de)发(fa)射效率(lv)。区(qu)(qu)域2所(suo)(suo)示的(de)(de)(de)(de)软N区(qu)(qu)为(wei)(wei)软恢(hui)(hui)复(fu)(fu)(fu)提供了(le)额外(wai)电(dian)荷。空(kong)穴的(de)(de)(de)(de)较(jiao)低的(de)(de)(de)(de)发(fa)射效率(lv)使得器件的(de)(de)(de)(de)正向(xiang)(xiang)(xiang)(xiang)电(dian)压降对(dui)温(wen)度不太敏(min)感，这(zhei)有利二(er)(er)极(ji)管(guan)(guan)并(bing)联工作，并(bing)且在(zai)(zai)(zai)高温(wen)时开(kai)关(guan)(guan)损耗(hao)很(hen)小(xiao)。运用(yong)(yong)(yong)电(dian)子辐照作为(wei)(wei)外(wai)加(jia)的(de)(de)(de)(de)规范(fan)寿(shou)命(ming)抑制(zhi)(zhi)因(yin)素。

快恢(hui)复二(er)极(ji)管是指反(fan)向(xiang)(xiang)(xiang)恢(hui)复时(shi)间很短的(de)(de)二(er)极(ji)管(5us以(yi)下(xia))，工(gong)艺上多采用(yong)掺(chan)金措(cuo)施(shi)，结(jie)构(gou)上有采用(yong)PN结(jie)型结(jie)构(gou)，有的(de)(de)采用(yong)改进(jin)的(de)(de)PIN结(jie)构(gou)。其正(zheng)向(xiang)(xiang)(xiang)压降高于(yu)(yu)普通(tong)二(er)极(ji)管(1-2V)，反(fan)向(xiang)(xiang)(xiang)耐(nai)压多在(zai)1200V以(yi)下(xia)。从性(xing)能上可分为(wei)快恢(hui)复和超快恢(hui)复两个(ge)等级(ji)。前者(zhe)反(fan)向(xiang)(xiang)(xiang)恢(hui)复时(shi)间为(wei)数百纳(na)秒或(huo)更(geng)长，后者(zhe)则在(zai)100纳(na)秒以(yi)下(xia)。肖(xiao)(xiao)特基(ji)二(er)极(ji)管是以(yi)金属和半导体(ti)接触形成(cheng)的(de)(de)势垒为(wei)基(ji)础(chu)的(de)(de)二(er)极(ji)管，简称肖(xiao)(xiao)特基(ji)二(er)极(ji)管(Schottky Barrier Diode)，具有正(zheng)向(xiang)(xiang)(xiang)压降低(di)(di)(di)(0.4--0.5V)、反(fan)向(xiang)(xiang)(xiang)恢(hui)复时(shi)间很短(10-40纳(na)秒)，而且反(fan)向(xiang)(xiang)(xiang)漏电(dian)(dian)流较(jiao)大，耐(nai)压低(di)(di)(di)，一般低(di)(di)(di)于(yu)(yu)150V，多用(yong)于(yu)(yu)低(di)(di)(di)电(dian)(dian)压场(chang)合。这两种管子通(tong)常用(yong)于(yu)(yu)开关电(dian)(dian)源。快恢(hui)复二(er)极(ji)管可以(yi)在(zai)冷焊机上的(de)(de)使用(yong)。

快(kuai)(kuai)恢(hui)(hui)复(fu)(fu)(fu)整(zheng)(zheng)流(liu)(liu)(liu)二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)属于(yu)(yu)整(zheng)(zheng)流(liu)(liu)(liu)二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)中(zhong)的(de)(de)(de)高(gao)(gao)频(pin)(pin)整(zheng)(zheng)流(liu)(liu)(liu)二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)，适(shi)用(yong)(yong)于(yu)(yu)高(gao)(gao)频(pin)(pin)率(lv)(lv)的(de)(de)(de)电(dian)路(lu)(lu)场合，低(di)频(pin)(pin)如(ru)工(gong)频(pin)(pin)50HZ以(yi)下用(yong)(yong)普(pu)通(tong)的(de)(de)(de)整(zheng)(zheng)流(liu)(liu)(liu)二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)就(jiu)好(hao)。快(kuai)(kuai)恢(hui)(hui)复(fu)(fu)(fu)二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)做整(zheng)(zheng)流(liu)(liu)(liu)二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)常(chang)用(yong)(yong)在在频(pin)(pin)率(lv)(lv)较高(gao)(gao)的(de)(de)(de)逆变(bian)电(dian)路(lu)(lu)中(zhong)。但是(shi)由于(yu)(yu)整(zheng)(zheng)流(liu)(liu)(liu)电(dian)路(lu)(lu)由于(yu)(yu)频(pin)(pin)率(lv)(lv)很(hen)低(di)，故(gu)只(zhi)对耐压(ya)有(you)要求(qiu)，只(zhi)要耐压(ya)能(neng)满足，肯定(ding)是(shi)可以(yi)代(dai)(dai)用(yong)(yong)的(de)(de)(de)，且快(kuai)(kuai)恢(hui)(hui)复(fu)(fu)(fu)二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)也有(you)用(yong)(yong)于(yu)(yu)整(zheng)(zheng)流(liu)(liu)(liu)的(de)(de)(de)情况，就(jiu)是(shi)在开关电(dian)源次级(ji)整(zheng)(zheng)流(liu)(liu)(liu)部份，由于(yu)(yu)频(pin)(pin)率(lv)(lv)较高(gao)(gao)，只(zhi)能(neng)使(shi)用(yong)(yong)快(kuai)(kuai)恢(hui)(hui)复(fu)(fu)(fu)二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)整(zheng)(zheng)流(liu)(liu)(liu)，否则由于(yu)(yu)二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)损耗太大会(hui)(hui)造成电(dian)源整(zheng)(zheng)体(ti)效率(lv)(lv)降(jiang)低(di)，严(yan)重时(shi)(shi)(shi)会(hui)(hui)烧毁二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)。另外快(kuai)(kuai)恢(hui)(hui)复(fu)(fu)(fu)二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)的(de)(de)(de)价格(ge)较整(zheng)(zheng)流(liu)(liu)(liu)二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)贵(gui)很(hen)多，耐压(ya)越(yue)高(gao)(gao)越(yue)贵(gui)，所以(yi)一(yi)般是(shi)不会(hui)(hui)拿快(kuai)(kuai)恢(hui)(hui)复(fu)(fu)(fu)二(er)(er)代(dai)(dai)管(guan)(guan)(guan)使(shi)用(yong)(yong)的(de)(de)(de)。之所以(yi)称其为快(kuai)(kuai)速(su)(su)恢(hui)(hui)复(fu)(fu)(fu)二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)，这是(shi)因为普(pu)通(tong)整(zheng)(zheng)流(liu)(liu)(liu)二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)一(yi)般工(gong)作于(yu)(yu)低(di)频(pin)(pin)(如(ru)市电(dian)频(pin)(pin)率(lv)(lv)为50Hz)，其工(gong)作频(pin)(pin)率(lv)(lv)低(di)于(yu)(yu)3kHz，当工(gong)作频(pin)(pin)率(lv)(lv)在几十至几百kHz时(shi)(shi)(shi)，正(zheng)反(fan)向(xiang)电(dian)压(ya)变(bian)化的(de)(de)(de)时(shi)(shi)(shi)间慢(man)于(yu)(yu)恢(hui)(hui)复(fu)(fu)(fu)时(shi)(shi)(shi)间，普(pu)通(tong)整(zheng)(zheng)流(liu)(liu)(liu)二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)就(jiu)不能(neng)正(zheng)常(chang)实现单向(xiang)导通(tong)了，这时(shi)(shi)(shi)就(jiu)要用(yong)(yong)快(kuai)(kuai)速(su)(su)恢(hui)(hui)复(fu)(fu)(fu)整(zheng)(zheng)流(liu)(liu)(liu)二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)。快(kuai)(kuai)速(su)(su)恢(hui)(hui)复(fu)(fu)(fu)二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)的(de)(de)(de)特点就(jiu)是(shi)它的(de)(de)(de)恢(hui)(hui)复(fu)(fu)(fu)时(shi)(shi)(shi)间很(hen)短，这一(yi)特点使(shi)其适(shi)合高(gao)(gao)频(pin)(pin)整(zheng)(zheng)流(liu)(liu)(liu)。快(kuai)(kuai)恢(hui)(hui)复(fu)(fu)(fu)二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)有(you)一(yi)个决定(ding)其性能(neng)的(de)(de)(de)重要参数——反(fan)向(xiang)恢(hui)(hui)复(fu)(fu)(fu)时(shi)(shi)(shi)间。反(fan)向(xiang)恢(hui)(hui)复(fu)(fu)(fu)时(shi)(shi)(shi)间的(de)(de)(de)定(ding)义是(shi)，二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)从(cong)(cong)正(zheng)向(xiang)导通(tong)状(zhuang)态急剧转换到(dao)截止状(zhuang)态，从(cong)(cong)输出(chu)脉冲下降(jiang)到(dao)零线(xian)开始(shi)。Trr越(yue)小的(de)(de)(de)快(kuai)(kuai)速(su)(su)恢(hui)(hui)复(fu)(fu)(fu)二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)的(de)(de)(de)工(gong)作频(pin)(pin)率(lv)(lv)越(yue)高(gao)(gao)。MUR3060CTR是(shi)什(shen)么(me)类型的(de)(de)(de)管(guan)(guan)(guan)子？天(tian)津快(kuai)(kuai)恢(hui)(hui)复(fu)(fu)(fu)二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)MURB1060

MUR2020CTR是什么类型(xing)的管(guan)子(zi)？TO263封(feng)装(zhuang)的快(kuai)恢复二(er)极管(guan)MURF2040CT

这种铜(tong)底(di)板(ban)尚存在(zai)(zai)(zai)一定弧度的(de)(de)(de)(de)焊(han)(han)成品，当模(mo)(mo)(mo)块(kuai)(kuai)压(ya)(ya)装在(zai)(zai)(zai)散热(re)(re)器上时，能(neng)保(bao)证(zheng)它们之间(jian)的(de)(de)(de)(de)充(chong)分(fen)接触(chu)，有利(li)(li)于(yu)热(re)(re)传(chuan)导(dao)(dao)(dao)(dao)(dao)，从(cong)而使模(mo)(mo)(mo)块(kuai)(kuai)的(de)(de)(de)(de)接触(chu)热(re)(re)阻降低(di)，有利(li)(li)于(yu)模(mo)(mo)(mo)块(kuai)(kuai)的(de)(de)(de)(de)出力和可靠性。(3)由(you)于(yu)FRED模(mo)(mo)(mo)块(kuai)(kuai)工作于(yu)高(gao)频(20kHZ以(yi)上)，因(yin)此，必须在(zai)(zai)(zai)结构设计要充(chong)分(fen)考(kao)虑消除(chu)寄(ji)生电(dian)(dian)(dian)感(gan)(gan)等问题，为(wei)此，在(zai)(zai)(zai)电(dian)(dian)(dian)磁等原(yuan)理基(ji)础上，充(chong)分(fen)考(kao)虑三个主(zhu)电(dian)(dian)(dian)极形状、布局和走向(xiang)，同(tong)时对键合铝丝长短和走向(xiang)也作了(le)合适安排。以(yi)减(jian)少(shao)模(mo)(mo)(mo)块(kuai)(kuai)内部的(de)(de)(de)(de)分(fen)布电(dian)(dian)(dian)感(gan)(gan)，确保(bao)二单元的(de)(de)(de)(de)分(fen)布电(dian)(dian)(dian)感(gan)(gan)一致，从(cong)而解(jie)决模(mo)(mo)(mo)块(kuai)(kuai)的(de)(de)(de)(de)噪音(yin)和发热(re)(re)问题，提高(gao)装置效率。3.主(zhu)要技术参数图(tu)(tu)3是FRED模(mo)(mo)(mo)块(kuai)(kuai)导(dao)(dao)(dao)(dao)(dao)通(tong)(tong)和关(guan)(guan)断(duan)期间(jian)的(de)(de)(de)(de)电(dian)(dian)(dian)流和电(dian)(dian)(dian)压(ya)(ya)波形图(tu)(tu)，它显示了(le)FRED器件从(cong)正(zheng)(zheng)向(xiang)导(dao)(dao)(dao)(dao)(dao)通(tong)(tong)到反(fan)(fan)向(xiang)恢复的(de)(de)(de)(de)全过(guo)程。其主(zhu)要关(guan)(guan)断(duan)特性参数为(wei)：反(fan)(fan)向(xiang)恢复时间(jian)trr=ta+tb（ta为(wei)少(shao)数载流子(zi)存储时间(jian)，tb为(wei)少(shao)数载流子(zi)复合时间(jian)）；软度因(yin)子(zi)S=(表示器件反(fan)(fan)向(xiang)恢复曲线的(de)(de)(de)(de)软度)；反(fan)(fan)向(xiang)恢复峰(feng)值电(dian)(dian)(dian)流：；反(fan)(fan)向(xiang)恢复电(dian)(dian)(dian)荷(he)。而导(dao)(dao)(dao)(dao)(dao)通(tong)(tong)参数为(wei)：反(fan)(fan)向(xiang)重复峰(feng)值电(dian)(dian)(dian)压(ya)(ya)URRM.；正(zheng)(zheng)向(xiang)平均(jun)(jun)电(dian)(dian)(dian)流IF(AV)；正(zheng)(zheng)向(xiang)峰(feng)值电(dian)(dian)(dian)压(ya)(ya)UFM；正(zheng)(zheng)向(xiang)均(jun)(jun)方根电(dian)(dian)(dian)流IF(RMS)和正(zheng)(zheng)向(xiang)浪(lang)涌电(dian)(dian)(dian)流IFSM等。图(tu)(tu)2（a）预弯后的(de)(de)(de)(de)铜(tong)底(di)板(ban)（b）铜(tong)底(di)板(ban)与DBC基(ji)板(ban)焊(han)(han)接后的(de)(de)(de)(de)合格品图(tu)(tu)3FRED导(dao)(dao)(dao)(dao)(dao)通(tong)(tong)和关(guan)(guan)断(duan)期间(jian)的(de)(de)(de)(de)电(dian)(dian)(dian)流和电(dian)(dian)(dian)压(ya)(ya)波形图(tu)(tu)这里需要注意(yi)的(de)(de)(de)(de)是：trr随所(suo)加反(fan)(fan)向(xiang)电(dian)(dian)(dian)压(ya)(ya)UR的(de)(de)(de)(de)增加而增加，例如600V的(de)(de)(de)(de)FRED。TO263封装的(de)(de)(de)(de)快恢复二极管MURF2040CT

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