GPP和OJ芯(xin)(xin)片(pian)(pian)工(gong)藝的(de)(de)區別就在(zai)(zai)(zai)(zai)P-N結(jie)(jie)(jie)的(de)(de)保(bao)(bao)(bao)護上。OJ結(jie)(jie)(jie)構(gou)(gou)的(de)(de)產(chan)(chan)(chan)品(pin)(pin)(pin)，采(cai)用涂膠保(bao)(bao)(bao)護結(jie)(jie)(jie)，然后在(zai)(zai)(zai)(zai)200度左右(you)溫(wen)度進行(xing)(xing)固(gu)化。保(bao)(bao)(bao)護P-N結(jie)(jie)(jie)獲得電(dian)壓。GPP結(jie)(jie)(jie)構(gou)(gou)的(de)(de)產(chan)(chan)(chan)品(pin)(pin)(pin)，芯(xin)(xin)片(pian)(pian)的(de)(de)P-N結(jie)(jie)(jie)是(shi)(shi)在(zai)(zai)(zai)(zai)鈍化玻(bo)(bo)璃的(de)(de)保(bao)(bao)(bao)護之下(xia)，玻(bo)(bo)璃是(shi)(shi)將玻(bo)(bo)璃粉采(cai)用800度左右(you)的(de)(de)燒結(jie)(jie)(jie)熔(rong)化，冷(leng)卻后形成玻(bo)(bo)璃層。這玻(bo)(bo)璃層和芯(xin)(xin)片(pian)(pian)熔(rong)為一體，無法(fa)用機(ji)械的(de)(de)方(fang)法(fa)分(fen)開(kai)。而OJ的(de)(de)保(bao)(bao)(bao)護膠，是(shi)(shi)覆蓋在(zai)(zai)(zai)(zai)P-N結(jie)(jie)(jie)的(de)(de)表面(mian)。3．特性(xing)比(bi)(bi)較1）由(you)于(yu)結(jie)(jie)(jie)構(gou)(gou)的(de)(de)不(bu)同，當有外界應力產(chan)(chan)(chan)生(sheng)（比(bi)(bi)如進行(xing)(xing)彎角(jiao)處理），器(qi)件進行(xing)(xing)冷(leng)熱(re)沖(chong)擊(ji)，如果塑料封裝(zhuang)(zhuang)體有漏(lou)氣，等等情(qing)況下(xia)。OJ的(de)(de)產(chan)(chan)(chan)品(pin)(pin)(pin)，其(qi)保(bao)(bao)(bao)護膠和硅片(pian)(pian)結(jie)(jie)(jie)合的(de)(de)不(bu)牢固(gu)，就會出(chu)現保(bao)(bao)(bao)護不(bu)好的(de)(de)情(qing)況，使(shi)器(qi)件出(chu)現一定(ding)(ding)比(bi)(bi)率的(de)(de)失效。GPP產(chan)(chan)(chan)品(pin)(pin)(pin)則不(bu)會出(chu)現類似的(de)(de)情(qing)況。2）GPP二極(ji)管(guan)的(de)(de)可(ke)靠(kao)性(xing)高。首先，GPP常溫(wen)下(xia)，漏(lou)電(dian)比(bi)(bi)OJ的(de)(de)就要(yao)(yao)(yao)小。尤其(qi)重要(yao)(yao)(yao)的(de)(de)是(shi)(shi)HTRB（高溫(wen)反(fan)向偏(pian)置，是(shi)(shi)衡量產(chan)(chan)(chan)品(pin)(pin)(pin)可(ke)靠(kao)性(xing)的(de)(de)重要(yao)(yao)(yao)標志(zhi)參數(shu)）GPP要(yao)(yao)(yao)好很(hen)多，OJ的(de)(de)產(chan)(chan)(chan)品(pin)(pin)(pin)能承受(shou)100度左右(you)的(de)(de)HTRB。而GPP在(zai)(zai)(zai)(zai)溫(wen)度達到(dao)150度時(shi)，仍然表現非常出(chu)色(se)。4．說明：以(yi)前OJ的(de)(de)產(chan)(chan)(chan)品(pin)(pin)(pin)限(xian)于(yu)DO系列(lie)的(de)(de)軸向封裝(zhuang)(zhuang)，所(suo)以(yi)很(hen)多客(ke)戶都使(shi)用片(pian)(pian)式(shi)封裝(zhuang)(zhuang)（SMD）產(chan)(chan)(chan)品(pin)(pin)(pin)。因為片(pian)(pian)式(shi)產(chan)(chan)(chan)品(pin)(pin)(pin)，當時(shi)只能使(shi)用GPP芯(xin)(xin)片(pian)(pian)進行(xing)(xing)封裝(zhuang)(zhuang)。但(dan)是(shi)(shi)，現在(zai)(zai)(zai)(zai)也出(chu)現了片(pian)(pian)式(shi)封裝(zhuang)(zhuang)OJ產(chan)(chan)(chan)品(pin)(pin)(pin)。所(suo)以(yi)在(zai)(zai)(zai)(zai)選用上一定(ding)(ding)要(yao)(yao)(yao)注意分(fen)清。MUR1640CA是(shi)(shi)什(shen)么類型的(de)(de)管(guan)子(zi)？TO263封裝(zhuang)(zhuang)的(de)(de)快恢復二極(ji)管(guan)MURF2040CT

繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)并(bing)聯快(kuai)恢(hui)(hui)復(fu)(fu)(fu)二(er)(er)(er)極(ji)管(guan)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)形式見圖1，其作(zuo)用主要(yao)是(shi)為了(le)保護晶(jing)體(ti)管(guan)等(deng)驅動(dong)(dong)元(yuan)器(qi)(qi)件。流經線(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流變(bian)化(hua)時(shi)，線(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)會(hui)(hui)(hui)產(chan)生(sheng)(sheng)自激(ji)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)來(lai)抑制電(dian)(dian)(dian)(dian)(dian)(dian)流的(de)(de)(de)(de)變(bian)化(hua)，當線(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)中(zhong)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流變(bian)化(hua)越快(kuai)時(shi)，所(suo)產(chan)生(sheng)(sheng)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)越高。在(zai)繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)開通(tong)到關斷(duan)的(de)(de)(de)(de)瞬間，由(you)于(yu)線(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)有電(dian)(dian)(dian)(dian)(dian)(dian)感(gan)的(de)(de)(de)(de)性質，所(suo)以(yi)瞬間會(hui)(hui)(hui)在(zai)繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)的(de)(de)(de)(de)線(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)的(de)(de)(de)(de)低電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)端產(chan)生(sheng)(sheng)一個(ge)瞬間電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)尖峰,通(tong)常能高達(da)數十(shi)倍(bei)的(de)(de)(de)(de)線(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)額(e)定工(gong)作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)。當圖中(zhong)晶(jing)體(ti)管(guan)VT由(you)導(dao)通(tong)變(bian)為截(jie)止時(shi)，流經繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)線(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流將(jiang)迅速減小，這時(shi)線(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)會(hui)(hui)(hui)產(chan)生(sheng)(sheng)很高的(de)(de)(de)(de)自感(gan)電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)勢與(yu)電(dian)(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)疊加(jia)后加(jia)在(zai)VT的(de)(de)(de)(de)c、e兩極(ji)間，會(hui)(hui)(hui)使晶(jing)體(ti)管(guan)擊穿(chuan)，并(bing)聯上(shang)(shang)快(kuai)恢(hui)(hui)復(fu)(fu)(fu)二(er)(er)(er)極(ji)管(guan)后，即可將(jiang)線(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)的(de)(de)(de)(de)自感(gan)電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)勢鉗位(wei)于(yu)快(kuai)恢(hui)(hui)復(fu)(fu)(fu)二(er)(er)(er)極(ji)管(guan)的(de)(de)(de)(de)正向(xiang)導(dao)通(tong)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)，此值(zhi)硅管(guan)約，鍺管(guan)約，從而避免(mian)擊穿(chuan)晶(jing)體(ti)管(guan)等(deng)驅動(dong)(dong)元(yuan)器(qi)(qi)件。并(bing)聯快(kuai)恢(hui)(hui)復(fu)(fu)(fu)二(er)(er)(er)極(ji)管(guan)時(shi)一定要(yao)注意快(kuai)恢(hui)(hui)復(fu)(fu)(fu)二(er)(er)(er)極(ji)管(guan)的(de)(de)(de)(de)極(ji)性不可接反(fan)，否則容易損(sun)壞晶(jing)體(ti)管(guan)等(deng)驅動(dong)(dong)元(yuan)器(qi)(qi)件。繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)線(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)斷(duan)電(dian)(dian)(dian)(dian)(dian)(dian)瞬間，線(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)上(shang)(shang)可產(chan)生(sheng)(sheng)高于(yu)線(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)額(e)定工(gong)作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)值(zhi)30倍(bei)以(yi)上(shang)(shang)的(de)(de)(de)(de)反(fan)峰電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)，對(dui)電(dian)(dian)(dian)(dian)(dian)(dian)子線(xian)(xian)(xian)(xian)路(lu)有極(ji)大的(de)(de)(de)(de)危害，通(tong)常采(cai)用并(bing)聯瞬態抑制（又叫削峰）快(kuai)恢(hui)(hui)復(fu)(fu)(fu)二(er)(er)(er)極(ji)管(guan)或(huo)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)的(de)(de)(de)(de)方法加(jia)以(yi)抑制，使反(fan)峰電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)不超(chao)過50V，但(dan)并(bing)聯快(kuai)恢(hui)(hui)復(fu)(fu)(fu)二(er)(er)(er)極(ji)管(guan)會(hui)(hui)(hui)延長繼(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)的(de)(de)(de)(de)釋放時(shi)間3~5倍(bei)。天津快(kuai)恢(hui)(hui)復(fu)(fu)(fu)二(er)(er)(er)極(ji)管(guan)MURB1060MURF2020CT是(shi)什(shen)么類型(xing)的(de)(de)(de)(de)管(guan)子？

有(you)一種二(er)(er)(er)極管(guan)(guan)叫做SONIC二(er)(er)(er)極管(guan)(guan)，其反(fan)向(xiang)(xiang)(xiang)回復(fu)(fu)時(shi)(shi)間(jian)較為長，約～μs，軟(ruan)(ruan)(ruan)度(du)因(yin)子在(zai)(zai)。在(zai)(zai)制造中除了(le)使(shi)用(yong)(yong)(yong)平面(mian)結終止結構(gou)，玻璃鈍化并(bing)有(you)硅橡(xiang)膠保護(hu)外(wai)，還使(shi)用(yong)(yong)(yong)了(le)從硅片背面(mian)開(kai)展深擴散磷和控制軸(zhou)向(xiang)(xiang)(xiang)壽(shou)命(ming)抑(yi)制因(yin)素，使(shi)迅(xun)速(su)(su)二(er)(er)(er)極管(guan)(guan)的(de)(de)反(fan)向(xiang)(xiang)(xiang)恢(hui)復(fu)(fu)電(dian)流衰減(jian)較慢，具(ju)反(fan)向(xiang)(xiang)(xiang)“軟(ruan)(ruan)(ruan)恢(hui)復(fu)(fu)”特點，防范(fan)在(zai)(zai)高(gao)頻(pin)(pin)應(ying)用(yong)(yong)(yong)時(shi)(shi)在(zai)(zai)硬關(guan)(guan)斷過程中產生過高(gao)的(de)(de)反(fan)向(xiang)(xiang)(xiang)尖峰電(dian)壓(ya)，維護(hu)了(le)開(kai)關(guan)(guan)器件(jian)及其二(er)(er)(er)極管(guan)(guan)自身(shen)。該二(er)(er)(er)極管(guan)(guan)在(zai)(zai)整個工(gong)作(zuo)溫(wen)度(du)范(fan)圍(wei)內性能安(an)定(ding)，并(bing)且對(dui)于溫(wen)度(du)的(de)(de)變化正(zheng)向(xiang)(xiang)(xiang)電(dian)壓(ya)降(jiang)(jiang)(jiang)的(de)(de)變化可(ke)以忽(hu)視不(bu)計。該二(er)(er)(er)極管(guan)(guan)是為高(gao)頻(pin)(pin)應(ying)用(yong)(yong)(yong)設計的(de)(de)，在(zai)(zai)高(gao)頻(pin)(pin)應(ying)用(yong)(yong)(yong)時(shi)(shi)安(an)定(ding)確實。新的(de)(de)迅(xun)速(su)(su)軟(ruan)(ruan)(ruan)恢(hui)復(fu)(fu)二(er)(er)(er)極管(guan)(guan)——SONIC二(er)(er)(er)極管(guan)(guan)系列克(ke)服了(le)這些缺陷，它(ta)們的(de)(de)優點為：1．并(bing)聯二(er)(er)(er)極管(guan)(guan)工(gong)作(zuo)時(shi)(shi)正(zheng)向(xiang)(xiang)(xiang)電(dian)壓(ya)降(jiang)(jiang)(jiang)Vf與溫(wen)度(du)無(wu)關(guan)(guan)；2．阻斷電(dian)壓(ya)平穩，漏(lou)電(dian)流比摻金和鉑的(de)(de)小(xiao)；3．迅(xun)速(su)(su)軟(ruan)(ruan)(ruan)恢(hui)復(fu)(fu)二(er)(er)(er)極管(guan)(guan)在(zai)(zai)高(gao)溫(wen)下反(fan)向(xiang)(xiang)(xiang)漏(lou)電(dian)流從25℃到125℃比摻鉑FRED少50%。SONIC二(er)(er)(er)極管(guan)(guan)使(shi)用(yong)(yong)(yong)磷深擴散和軸(zhou)向(xiang)(xiang)(xiang)壽(shou)命(ming)抑(yi)制因(yin)素，電(dian)壓(ya)從600V至1800V，如圖3所(suo)示(shi)。在(zai)(zai)硼中受控的(de)(de)軸(zhou)向(xiang)(xiang)(xiang)壽(shou)命(ming)抑(yi)制因(yin)素用(yong)(yong)(yong)來(lai)支配區(qu)(qu)域1中空(kong)穴的(de)(de)發射效率。區(qu)(qu)域2所(suo)示(shi)的(de)(de)軟(ruan)(ruan)(ruan)N區(qu)(qu)為軟(ruan)(ruan)(ruan)恢(hui)復(fu)(fu)提(ti)供了(le)額外(wai)電(dian)荷。空(kong)穴的(de)(de)較低(di)的(de)(de)發射效率使(shi)得器件(jian)的(de)(de)正(zheng)向(xiang)(xiang)(xiang)電(dian)壓(ya)降(jiang)(jiang)(jiang)對(dui)溫(wen)度(du)不(bu)太敏感，這有(you)利二(er)(er)(er)極管(guan)(guan)并(bing)聯工(gong)作(zuo)，并(bing)且在(zai)(zai)高(gao)溫(wen)時(shi)(shi)開(kai)關(guan)(guan)損耗很小(xiao)。運用(yong)(yong)(yong)電(dian)子輻照作(zuo)為外(wai)加的(de)(de)規范(fan)壽(shou)命(ming)抑(yi)制因(yin)素。

快(kuai)(kuai)恢復(fu)二極管(guan)(guan)是指反(fan)(fan)向(xiang)(xiang)(xiang)恢復(fu)時(shi)間(jian)(jian)很(hen)短的(de)(de)(de)二極管(guan)(guan)(5us以下(xia)(xia))，工藝(yi)上多采用摻金措施，結構上有采用PN結型結構，有的(de)(de)(de)采用改進的(de)(de)(de)PIN結構。其正向(xiang)(xiang)(xiang)壓(ya)降高(gao)于(yu)普通(tong)二極管(guan)(guan)(1-2V)，反(fan)(fan)向(xiang)(xiang)(xiang)耐(nai)壓(ya)多在1200V以下(xia)(xia)。從(cong)性(xing)能上可分為(wei)快(kuai)(kuai)恢復(fu)和超快(kuai)(kuai)恢復(fu)兩(liang)個(ge)等(deng)級。前者(zhe)反(fan)(fan)向(xiang)(xiang)(xiang)恢復(fu)時(shi)間(jian)(jian)為(wei)數百(bai)納秒(miao)或更(geng)長(chang)，后(hou)者(zhe)則在100納秒(miao)以下(xia)(xia)。肖(xiao)特基二極管(guan)(guan)是以金屬和半導體接觸(chu)形成的(de)(de)(de)勢壘(lei)為(wei)基礎的(de)(de)(de)二極管(guan)(guan)，簡(jian)稱(cheng)肖(xiao)特基二極管(guan)(guan)(Schottky Barrier Diode)，具有正向(xiang)(xiang)(xiang)壓(ya)降低(di)(di)(0.4--0.5V)、反(fan)(fan)向(xiang)(xiang)(xiang)恢復(fu)時(shi)間(jian)(jian)很(hen)短(10-40納秒(miao))，而且反(fan)(fan)向(xiang)(xiang)(xiang)漏電(dian)流較大，耐(nai)壓(ya)低(di)(di)，一般低(di)(di)于(yu)150V，多用于(yu)低(di)(di)電(dian)壓(ya)場合。這兩(liang)種(zhong)管(guan)(guan)子通(tong)常用于(yu)開關電(dian)源。快(kuai)(kuai)恢復(fu)二極管(guan)(guan)可以在冷焊機上的(de)(de)(de)使用。

快(kuai)(kuai)(kuai)恢(hui)(hui)(hui)(hui)(hui)復(fu)整(zheng)(zheng)(zheng)(zheng)(zheng)流(liu)(liu)(liu)(liu)二(er)(er)(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)屬于(yu)(yu)(yu)整(zheng)(zheng)(zheng)(zheng)(zheng)流(liu)(liu)(liu)(liu)二(er)(er)(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)中的(de)(de)(de)高頻(pin)整(zheng)(zheng)(zheng)(zheng)(zheng)流(liu)(liu)(liu)(liu)二(er)(er)(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)，適(shi)用于(yu)(yu)(yu)高頻(pin)率(lv)(lv)的(de)(de)(de)電(dian)路(lu)場(chang)合，低(di)(di)頻(pin)如(ru)工(gong)(gong)頻(pin)50HZ以(yi)下(xia)用普通(tong)(tong)的(de)(de)(de)整(zheng)(zheng)(zheng)(zheng)(zheng)流(liu)(liu)(liu)(liu)二(er)(er)(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)就(jiu)(jiu)好。快(kuai)(kuai)(kuai)恢(hui)(hui)(hui)(hui)(hui)復(fu)二(er)(er)(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)做整(zheng)(zheng)(zheng)(zheng)(zheng)流(liu)(liu)(liu)(liu)二(er)(er)(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)常(chang)用在在頻(pin)率(lv)(lv)較高的(de)(de)(de)逆變電(dian)路(lu)中。但是由(you)(you)于(yu)(yu)(yu)整(zheng)(zheng)(zheng)(zheng)(zheng)流(liu)(liu)(liu)(liu)電(dian)路(lu)由(you)(you)于(yu)(yu)(yu)頻(pin)率(lv)(lv)很低(di)(di)，故只(zhi)對耐壓有要求，只(zhi)要耐壓能(neng)滿(man)足，肯定(ding)是可以(yi)代(dai)用的(de)(de)(de)，且(qie)快(kuai)(kuai)(kuai)恢(hui)(hui)(hui)(hui)(hui)復(fu)二(er)(er)(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)也有用于(yu)(yu)(yu)整(zheng)(zheng)(zheng)(zheng)(zheng)流(liu)(liu)(liu)(liu)的(de)(de)(de)情況，就(jiu)(jiu)是在開關電(dian)源次級整(zheng)(zheng)(zheng)(zheng)(zheng)流(liu)(liu)(liu)(liu)部份，由(you)(you)于(yu)(yu)(yu)頻(pin)率(lv)(lv)較高，只(zhi)能(neng)使用快(kuai)(kuai)(kuai)恢(hui)(hui)(hui)(hui)(hui)復(fu)二(er)(er)(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)整(zheng)(zheng)(zheng)(zheng)(zheng)流(liu)(liu)(liu)(liu)，否則由(you)(you)于(yu)(yu)(yu)二(er)(er)(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)損耗太大會造成電(dian)源整(zheng)(zheng)(zheng)(zheng)(zheng)體(ti)效(xiao)率(lv)(lv)降低(di)(di)，嚴重(zhong)時(shi)會燒毀(hui)二(er)(er)(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)。另(ling)外快(kuai)(kuai)(kuai)恢(hui)(hui)(hui)(hui)(hui)復(fu)二(er)(er)(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)的(de)(de)(de)價格較整(zheng)(zheng)(zheng)(zheng)(zheng)流(liu)(liu)(liu)(liu)二(er)(er)(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)貴(gui)很多(duo)，耐壓越(yue)高越(yue)貴(gui)，所以(yi)一般(ban)(ban)是不會拿快(kuai)(kuai)(kuai)恢(hui)(hui)(hui)(hui)(hui)復(fu)二(er)(er)(er)(er)代(dai)管(guan)(guan)(guan)(guan)使用的(de)(de)(de)。之所以(yi)稱其(qi)為快(kuai)(kuai)(kuai)速恢(hui)(hui)(hui)(hui)(hui)復(fu)二(er)(er)(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)，這(zhe)是因為普通(tong)(tong)整(zheng)(zheng)(zheng)(zheng)(zheng)流(liu)(liu)(liu)(liu)二(er)(er)(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)一般(ban)(ban)工(gong)(gong)作(zuo)于(yu)(yu)(yu)低(di)(di)頻(pin)(如(ru)市(shi)電(dian)頻(pin)率(lv)(lv)為50Hz)，其(qi)工(gong)(gong)作(zuo)頻(pin)率(lv)(lv)低(di)(di)于(yu)(yu)(yu)3kHz，當(dang)工(gong)(gong)作(zuo)頻(pin)率(lv)(lv)在幾(ji)十至幾(ji)百kHz時(shi)，正反向(xiang)(xiang)電(dian)壓變化的(de)(de)(de)時(shi)間(jian)慢(man)于(yu)(yu)(yu)恢(hui)(hui)(hui)(hui)(hui)復(fu)時(shi)間(jian)，普通(tong)(tong)整(zheng)(zheng)(zheng)(zheng)(zheng)流(liu)(liu)(liu)(liu)二(er)(er)(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)就(jiu)(jiu)不能(neng)正常(chang)實現單向(xiang)(xiang)導通(tong)(tong)了(le)，這(zhe)時(shi)就(jiu)(jiu)要用快(kuai)(kuai)(kuai)速恢(hui)(hui)(hui)(hui)(hui)復(fu)整(zheng)(zheng)(zheng)(zheng)(zheng)流(liu)(liu)(liu)(liu)二(er)(er)(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)。快(kuai)(kuai)(kuai)速恢(hui)(hui)(hui)(hui)(hui)復(fu)二(er)(er)(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)的(de)(de)(de)特(te)點就(jiu)(jiu)是它的(de)(de)(de)恢(hui)(hui)(hui)(hui)(hui)復(fu)時(shi)間(jian)很短，這(zhe)一特(te)點使其(qi)適(shi)合高頻(pin)整(zheng)(zheng)(zheng)(zheng)(zheng)流(liu)(liu)(liu)(liu)。快(kuai)(kuai)(kuai)恢(hui)(hui)(hui)(hui)(hui)復(fu)二(er)(er)(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)有一個決定(ding)其(qi)性(xing)能(neng)的(de)(de)(de)重(zhong)要參數——反向(xiang)(xiang)恢(hui)(hui)(hui)(hui)(hui)復(fu)時(shi)間(jian)。反向(xiang)(xiang)恢(hui)(hui)(hui)(hui)(hui)復(fu)時(shi)間(jian)的(de)(de)(de)定(ding)義(yi)是，二(er)(er)(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)從正向(xiang)(xiang)導通(tong)(tong)狀態急(ji)劇轉換到截止狀態，從輸出脈沖下(xia)降到零線開始。Trr越(yue)小的(de)(de)(de)快(kuai)(kuai)(kuai)速恢(hui)(hui)(hui)(hui)(hui)復(fu)二(er)(er)(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)的(de)(de)(de)工(gong)(gong)作(zuo)頻(pin)率(lv)(lv)越(yue)高。MUR3060CTR是什么類型的(de)(de)(de)管(guan)(guan)(guan)(guan)子？天津快(kuai)(kuai)(kuai)恢(hui)(hui)(hui)(hui)(hui)復(fu)二(er)(er)(er)(er)極(ji)(ji)管(guan)(guan)(guan)(guan)MURB1060

MUR2020CTR是什么(me)類(lei)型的管(guan)子？TO263封裝的快恢(hui)復(fu)二極管(guan)MURF2040CT

這(zhe)種(zhong)銅底板尚存在一(yi)定弧度的(de)(de)(de)(de)焊(han)成品，當模(mo)(mo)塊(kuai)(kuai)壓(ya)裝(zhuang)在散熱(re)器(qi)上時(shi)，能保證它們之(zhi)間的(de)(de)(de)(de)充(chong)(chong)分接觸(chu)，有利(li)于熱(re)傳導，從(cong)而(er)(er)使模(mo)(mo)塊(kuai)(kuai)的(de)(de)(de)(de)接觸(chu)熱(re)阻降低，有利(li)于模(mo)(mo)塊(kuai)(kuai)的(de)(de)(de)(de)出力(li)和(he)(he)(he)可(ke)靠性。(3)由于FRED模(mo)(mo)塊(kuai)(kuai)工作于高(gao)頻(pin)(20kHZ以上)，因(yin)此，必須(xu)在結(jie)構設計要(yao)充(chong)(chong)分考(kao)慮消(xiao)除寄生電(dian)(dian)(dian)感等問題，為(wei)(wei)此，在電(dian)(dian)(dian)磁等原(yuan)理基礎(chu)上，充(chong)(chong)分考(kao)慮三個主電(dian)(dian)(dian)極(ji)形狀、布局和(he)(he)(he)走向(xiang)(xiang)(xiang)，同(tong)時(shi)對鍵合鋁絲長(chang)短和(he)(he)(he)走向(xiang)(xiang)(xiang)也作了(le)合適安排(pai)。以減少(shao)模(mo)(mo)塊(kuai)(kuai)內部(bu)的(de)(de)(de)(de)分布電(dian)(dian)(dian)感，確保二單元(yuan)的(de)(de)(de)(de)分布電(dian)(dian)(dian)感一(yi)致，從(cong)而(er)(er)解決模(mo)(mo)塊(kuai)(kuai)的(de)(de)(de)(de)噪音和(he)(he)(he)發熱(re)問題，提高(gao)裝(zhuang)置效率。3.主要(yao)技術參數圖(tu)3是(shi)FRED模(mo)(mo)塊(kuai)(kuai)導通和(he)(he)(he)關(guan)(guan)(guan)斷(duan)(duan)期間的(de)(de)(de)(de)電(dian)(dian)(dian)流(liu)和(he)(he)(he)電(dian)(dian)(dian)壓(ya)波(bo)形圖(tu)，它顯示了(le)FRED器(qi)件從(cong)正向(xiang)(xiang)(xiang)導通到反(fan)向(xiang)(xiang)(xiang)恢(hui)復(fu)(fu)(fu)的(de)(de)(de)(de)全(quan)過程。其主要(yao)關(guan)(guan)(guan)斷(duan)(duan)特性參數為(wei)(wei)：反(fan)向(xiang)(xiang)(xiang)恢(hui)復(fu)(fu)(fu)時(shi)間trr=ta+tb（ta為(wei)(wei)少(shao)數載流(liu)子存儲時(shi)間，tb為(wei)(wei)少(shao)數載流(liu)子復(fu)(fu)(fu)合時(shi)間）；軟度因(yin)子S=(表示器(qi)件反(fan)向(xiang)(xiang)(xiang)恢(hui)復(fu)(fu)(fu)曲線的(de)(de)(de)(de)軟度)；反(fan)向(xiang)(xiang)(xiang)恢(hui)復(fu)(fu)(fu)峰(feng)值(zhi)電(dian)(dian)(dian)流(liu)：；反(fan)向(xiang)(xiang)(xiang)恢(hui)復(fu)(fu)(fu)電(dian)(dian)(dian)荷。而(er)(er)導通參數為(wei)(wei)：反(fan)向(xiang)(xiang)(xiang)重(zhong)復(fu)(fu)(fu)峰(feng)值(zhi)電(dian)(dian)(dian)壓(ya)URRM.；正向(xiang)(xiang)(xiang)平均(jun)電(dian)(dian)(dian)流(liu)IF(AV)；正向(xiang)(xiang)(xiang)峰(feng)值(zhi)電(dian)(dian)(dian)壓(ya)UFM；正向(xiang)(xiang)(xiang)均(jun)方(fang)根電(dian)(dian)(dian)流(liu)IF(RMS)和(he)(he)(he)正向(xiang)(xiang)(xiang)浪涌電(dian)(dian)(dian)流(liu)IFSM等。圖(tu)2（a）預彎后(hou)的(de)(de)(de)(de)銅底板（b）銅底板與(yu)DBC基板焊(han)接后(hou)的(de)(de)(de)(de)合格(ge)品圖(tu)3FRED導通和(he)(he)(he)關(guan)(guan)(guan)斷(duan)(duan)期間的(de)(de)(de)(de)電(dian)(dian)(dian)流(liu)和(he)(he)(he)電(dian)(dian)(dian)壓(ya)波(bo)形圖(tu)這(zhe)里需要(yao)注意(yi)的(de)(de)(de)(de)是(shi)：trr隨所(suo)加反(fan)向(xiang)(xiang)(xiang)電(dian)(dian)(dian)壓(ya)UR的(de)(de)(de)(de)增加而(er)(er)增加，例如600V的(de)(de)(de)(de)FRED。TO263封裝(zhuang)的(de)(de)(de)(de)快恢(hui)復(fu)(fu)(fu)二極(ji)管(guan)MURF2040CT

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