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TO263封装的快恢复二极管MURF2040CT

发布时间:    来源:海润达物联科技有限责任公司   阅览次数:98958次

GPP和(he)OJ芯片工艺的(de)(de)(de)(de)(de)(de)区别(bie)就在(zai)(zai)P-N结的(de)(de)(de)(de)(de)(de)保(bao)(bao)护(hu)上。OJ结构(gou)的(de)(de)(de)(de)(de)(de)产(chan)品(pin),采(cai)用涂胶保(bao)(bao)护(hu)结,然后在(zai)(zai)200度(du)左(zuo)右温(wen)度(du)进(jin)行(xing)固化。保(bao)(bao)护(hu)P-N结获得电压(ya)。GPP结构(gou)的(de)(de)(de)(de)(de)(de)产(chan)品(pin),芯片的(de)(de)(de)(de)(de)(de)P-N结是(shi)(shi)在(zai)(zai)钝(dun)化玻(bo)璃(li)的(de)(de)(de)(de)(de)(de)保(bao)(bao)护(hu)之下,玻(bo)璃(li)是(shi)(shi)将玻(bo)璃(li)粉采(cai)用800度(du)左(zuo)右的(de)(de)(de)(de)(de)(de)烧结熔化,冷(leng)却后形成玻(bo)璃(li)层。这玻(bo)璃(li)层和(he)芯片熔为一体,无法(fa)用机(ji)械的(de)(de)(de)(de)(de)(de)方法(fa)分开(kai)。而OJ的(de)(de)(de)(de)(de)(de)保(bao)(bao)护(hu)胶,是(shi)(shi)覆(fu)盖在(zai)(zai)P-N结的(de)(de)(de)(de)(de)(de)表面。3.特性比(bi)较1)由(you)于结构(gou)的(de)(de)(de)(de)(de)(de)不(bu)同,当有(you)外界应力产(chan)生(sheng)(比(bi)如进(jin)行(xing)弯角处理(li)),器(qi)件进(jin)行(xing)冷(leng)热冲(chong)击,如果塑料封(feng)装体有(you)漏气,等(deng)等(deng)情况(kuang)下。OJ的(de)(de)(de)(de)(de)(de)产(chan)品(pin),其保(bao)(bao)护(hu)胶和(he)硅片结合的(de)(de)(de)(de)(de)(de)不(bu)牢(lao)固,就会出(chu)(chu)现保(bao)(bao)护(hu)不(bu)好(hao)的(de)(de)(de)(de)(de)(de)情况(kuang),使器(qi)件出(chu)(chu)现一定比(bi)率(lv)的(de)(de)(de)(de)(de)(de)失效。GPP产(chan)品(pin)则(ze)不(bu)会出(chu)(chu)现类(lei)似的(de)(de)(de)(de)(de)(de)情况(kuang)。2)GPP二极(ji)(ji)管(guan)(guan)的(de)(de)(de)(de)(de)(de)可(ke)靠(kao)性高(gao)。首先(xian),GPP常温(wen)下,漏电比(bi)OJ的(de)(de)(de)(de)(de)(de)就要小。尤(you)其重要的(de)(de)(de)(de)(de)(de)是(shi)(shi)HTRB(高(gao)温(wen)反(fan)向(xiang)偏置,是(shi)(shi)衡量产(chan)品(pin)可(ke)靠(kao)性的(de)(de)(de)(de)(de)(de)重要标志参(can)数)GPP要好(hao)很多,OJ的(de)(de)(de)(de)(de)(de)产(chan)品(pin)能承受(shou)100度(du)左(zuo)右的(de)(de)(de)(de)(de)(de)HTRB。而GPP在(zai)(zai)温(wen)度(du)达(da)到150度(du)时,仍然表现非常出(chu)(chu)色。4.说明(ming):以前(qian)OJ的(de)(de)(de)(de)(de)(de)产(chan)品(pin)限于DO系列的(de)(de)(de)(de)(de)(de)轴向(xiang)封(feng)装,所(suo)以很多客(ke)户都(dou)使用片式(shi)封(feng)装(SMD)产(chan)品(pin)。因为片式(shi)产(chan)品(pin),当时只(zhi)能使用GPP芯片进(jin)行(xing)封(feng)装。但是(shi)(shi),现在(zai)(zai)也出(chu)(chu)现了(le)片式(shi)封(feng)装OJ产(chan)品(pin)。所(suo)以在(zai)(zai)选用上一定要注意分清(qing)。MUR1640CA是(shi)(shi)什么类(lei)型的(de)(de)(de)(de)(de)(de)管(guan)(guan)子(zi)?TO263封(feng)装的(de)(de)(de)(de)(de)(de)快恢复(fu)二极(ji)(ji)管(guan)(guan)MURF2040CT

TO263封装的快恢复二极管MURF2040CT,快恢复二极管

继电(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)并(bing)(bing)(bing)联(lian)快(kuai)(kuai)恢复二(er)(er)极(ji)(ji)管(guan)(guan)(guan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)形式见图1,其作用(yong)主要是为了保护晶体管(guan)(guan)(guan)等(deng)驱(qu)动(dong)(dong)元(yuan)器(qi)(qi)(qi)(qi)(qi)件。流(liu)(liu)经线(xian)圈的(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)变(bian)化时(shi),线(xian)圈会(hui)产生(sheng)(sheng)(sheng)自激电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)来抑(yi)(yi)(yi)制(zhi)(zhi)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)(de)(de)变(bian)化,当线(xian)圈中的(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)变(bian)化越(yue)快(kuai)(kuai)时(shi),所产生(sheng)(sheng)(sheng)的(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)越(yue)高(gao)(gao)(gao)。在(zai)继电(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)开通(tong)到关断的(de)(de)(de)(de)瞬(shun)间,由于线(xian)圈有(you)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)感的(de)(de)(de)(de)性质,所以(yi)瞬(shun)间会(hui)在(zai)继电(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)线(xian)圈的(de)(de)(de)(de)低电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)端产生(sheng)(sheng)(sheng)一个瞬(shun)间电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)尖峰(feng)(feng)(feng),通(tong)常能高(gao)(gao)(gao)达数十倍(bei)(bei)的(de)(de)(de)(de)线(xian)圈额定(ding)工作电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)。当图中晶体管(guan)(guan)(guan)VT由导(dao)通(tong)变(bian)为截止时(shi),流(liu)(liu)经继电(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)线(xian)圈的(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)将迅速减小,这时(shi)线(xian)圈会(hui)产生(sheng)(sheng)(sheng)很高(gao)(gao)(gao)的(de)(de)(de)(de)自感电(dian)(dian)(dian)(dian)(dian)(dian)(dian)动(dong)(dong)势(shi)与(yu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)叠加后加在(zai)VT的(de)(de)(de)(de)c、e两极(ji)(ji)间,会(hui)使晶体管(guan)(guan)(guan)击穿,并(bing)(bing)(bing)联(lian)上(shang)快(kuai)(kuai)恢复二(er)(er)极(ji)(ji)管(guan)(guan)(guan)后,即可(ke)(ke)将线(xian)圈的(de)(de)(de)(de)自感电(dian)(dian)(dian)(dian)(dian)(dian)(dian)动(dong)(dong)势(shi)钳位于快(kuai)(kuai)恢复二(er)(er)极(ji)(ji)管(guan)(guan)(guan)的(de)(de)(de)(de)正向(xiang)导(dao)通(tong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya),此值(zhi)硅管(guan)(guan)(guan)约(yue),锗管(guan)(guan)(guan)约(yue),从而避免(mian)击穿晶体管(guan)(guan)(guan)等(deng)驱(qu)动(dong)(dong)元(yuan)器(qi)(qi)(qi)(qi)(qi)件。并(bing)(bing)(bing)联(lian)快(kuai)(kuai)恢复二(er)(er)极(ji)(ji)管(guan)(guan)(guan)时(shi)一定(ding)要注意(yi)快(kuai)(kuai)恢复二(er)(er)极(ji)(ji)管(guan)(guan)(guan)的(de)(de)(de)(de)极(ji)(ji)性不(bu)可(ke)(ke)接反,否则容易损坏(huai)晶体管(guan)(guan)(guan)等(deng)驱(qu)动(dong)(dong)元(yuan)器(qi)(qi)(qi)(qi)(qi)件。继电(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)线(xian)圈断电(dian)(dian)(dian)(dian)(dian)(dian)(dian)瞬(shun)间,线(xian)圈上(shang)可(ke)(ke)产生(sheng)(sheng)(sheng)高(gao)(gao)(gao)于线(xian)圈额定(ding)工作电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)值(zhi)30倍(bei)(bei)以(yi)上(shang)的(de)(de)(de)(de)反峰(feng)(feng)(feng)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya),对电(dian)(dian)(dian)(dian)(dian)(dian)(dian)子线(xian)路(lu)(lu)有(you)极(ji)(ji)大的(de)(de)(de)(de)危害(hai),通(tong)常采用(yong)并(bing)(bing)(bing)联(lian)瞬(shun)态(tai)抑(yi)(yi)(yi)制(zhi)(zhi)(又叫削峰(feng)(feng)(feng))快(kuai)(kuai)恢复二(er)(er)极(ji)(ji)管(guan)(guan)(guan)或电(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻的(de)(de)(de)(de)方法加以(yi)抑(yi)(yi)(yi)制(zhi)(zhi),使反峰(feng)(feng)(feng)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)不(bu)超过(guo)50V,但并(bing)(bing)(bing)联(lian)快(kuai)(kuai)恢复二(er)(er)极(ji)(ji)管(guan)(guan)(guan)会(hui)延长继电(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)释放时(shi)间3~5倍(bei)(bei)。天津快(kuai)(kuai)恢复二(er)(er)极(ji)(ji)管(guan)(guan)(guan)MURB1060MURF2020CT是什么(me)类型(xing)的(de)(de)(de)(de)管(guan)(guan)(guan)子?

TO263封装的快恢复二极管MURF2040CT,快恢复二极管

有(you)一(yi)种二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)叫做(zuo)SONIC二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan),其反(fan)(fan)向(xiang)(xiang)(xiang)回(hui)复(fu)时(shi)间较为(wei)长,约~µs,软(ruan)度(du)因子在。在制(zhi)(zhi)造中除了(le)使用(yong)平面结终(zhong)止结构,玻璃钝(dun)化并(bing)(bing)有(you)硅(gui)橡胶保护外,还使用(yong)了(le)从(cong)硅(gui)片背面开展深(shen)扩散(san)磷和(he)控制(zhi)(zhi)轴向(xiang)(xiang)(xiang)寿命(ming)抑(yi)制(zhi)(zhi)因素,使迅(xun)速二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)的(de)(de)反(fan)(fan)向(xiang)(xiang)(xiang)恢复(fu)电(dian)(dian)(dian)(dian)流(liu)衰减较慢,具(ju)反(fan)(fan)向(xiang)(xiang)(xiang)“软(ruan)恢复(fu)”特点,防范(fan)在高频(pin)应(ying)用(yong)时(shi)在硬关(guan)断过(guo)(guo)程中产生过(guo)(guo)高的(de)(de)反(fan)(fan)向(xiang)(xiang)(xiang)尖(jian)峰电(dian)(dian)(dian)(dian)压(ya),维(wei)护了(le)开关(guan)器(qi)件及其二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)自(zi)身。该二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)在整个工作温(wen)度(du)范(fan)围内性能安定,并(bing)(bing)且对(dui)于温(wen)度(du)的(de)(de)变化正向(xiang)(xiang)(xiang)电(dian)(dian)(dian)(dian)压(ya)降(jiang)的(de)(de)变化可以忽视不计。该二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)是为(wei)高频(pin)应(ying)用(yong)设(she)计的(de)(de),在高频(pin)应(ying)用(yong)时(shi)安定确实。新的(de)(de)迅(xun)速软(ruan)恢复(fu)二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)——SONIC二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)系列克服了(le)这些(xie)缺陷,它们的(de)(de)优点为(wei):1.并(bing)(bing)联(lian)二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)工作时(shi)正向(xiang)(xiang)(xiang)电(dian)(dian)(dian)(dian)压(ya)降(jiang)Vf与温(wen)度(du)无关(guan);2.阻断电(dian)(dian)(dian)(dian)压(ya)平稳,漏(lou)电(dian)(dian)(dian)(dian)流(liu)比掺金和(he)铂(bo)的(de)(de)小(xiao);3.迅(xun)速软(ruan)恢复(fu)二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)在高温(wen)下反(fan)(fan)向(xiang)(xiang)(xiang)漏(lou)电(dian)(dian)(dian)(dian)流(liu)从(cong)25℃到(dao)125℃比掺铂(bo)FRED少(shao)50%。SONIC二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)使用(yong)磷深(shen)扩散(san)和(he)轴向(xiang)(xiang)(xiang)寿命(ming)抑(yi)制(zhi)(zhi)因素,电(dian)(dian)(dian)(dian)压(ya)从(cong)600V至1800V,如图(tu)3所示。在硼中受控的(de)(de)轴向(xiang)(xiang)(xiang)寿命(ming)抑(yi)制(zhi)(zhi)因素用(yong)来支配区(qu)域1中空穴的(de)(de)发射(she)效(xiao)率。区(qu)域2所示的(de)(de)软(ruan)N区(qu)为(wei)软(ruan)恢复(fu)提供了(le)额外电(dian)(dian)(dian)(dian)荷(he)。空穴的(de)(de)较低的(de)(de)发射(she)效(xiao)率使得器(qi)件的(de)(de)正向(xiang)(xiang)(xiang)电(dian)(dian)(dian)(dian)压(ya)降(jiang)对(dui)温(wen)度(du)不太敏感,这有(you)利二(er)(er)极(ji)(ji)(ji)(ji)(ji)管(guan)(guan)(guan)并(bing)(bing)联(lian)工作,并(bing)(bing)且在高温(wen)时(shi)开关(guan)损耗很小(xiao)。运用(yong)电(dian)(dian)(dian)(dian)子辐照(zhao)作为(wei)外加的(de)(de)规范(fan)寿命(ming)抑(yi)制(zhi)(zhi)因素。

快恢(hui)复(fu)(fu)二(er)极(ji)(ji)管(guan)(guan)(guan)是指反向恢(hui)复(fu)(fu)时间(jian)很(hen)短的(de)二(er)极(ji)(ji)管(guan)(guan)(guan)(5us以(yi)下(xia)),工(gong)艺(yi)上(shang)多(duo)采用(yong)(yong)掺金措(cuo)施,结(jie)(jie)构(gou)上(shang)有(you)采用(yong)(yong)PN结(jie)(jie)型(xing)结(jie)(jie)构(gou),有(you)的(de)采用(yong)(yong)改进的(de)PIN结(jie)(jie)构(gou)。其正(zheng)向压降(jiang)高于(yu)普通二(er)极(ji)(ji)管(guan)(guan)(guan)(1-2V),反向耐(nai)压多(duo)在1200V以(yi)下(xia)。从性(xing)能上(shang)可(ke)分为(wei)快恢(hui)复(fu)(fu)和超快恢(hui)复(fu)(fu)两(liang)个等级(ji)。前者反向恢(hui)复(fu)(fu)时间(jian)为(wei)数(shu)百纳秒或更长,后(hou)者则在100纳秒以(yi)下(xia)。肖特基二(er)极(ji)(ji)管(guan)(guan)(guan)是以(yi)金属和半导体接触形成的(de)势垒为(wei)基础的(de)二(er)极(ji)(ji)管(guan)(guan)(guan),简称肖特基二(er)极(ji)(ji)管(guan)(guan)(guan)(Schottky Barrier Diode),具有(you)正(zheng)向压降(jiang)低(0.4--0.5V)、反向恢(hui)复(fu)(fu)时间(jian)很(hen)短(10-40纳秒),而且反向漏电流较大,耐(nai)压低,一(yi)般低于(yu)150V,多(duo)用(yong)(yong)于(yu)低电压场合。这(zhei)两(liang)种管(guan)(guan)(guan)子通常(chang)用(yong)(yong)于(yu)开关电源。快恢(hui)复(fu)(fu)二(er)极(ji)(ji)管(guan)(guan)(guan)可(ke)以(yi)在冷焊机上(shang)的(de)使用(yong)(yong)。

TO263封装的快恢复二极管MURF2040CT,快恢复二极管

快(kuai)恢(hui)(hui)复(fu)(fu)(fu)(fu)(fu)(fu)(fu)整(zheng)(zheng)流(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)属于(yu)(yu)(yu)整(zheng)(zheng)流(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)中的(de)(de)(de)高(gao)(gao)频(pin)(pin)(pin)(pin)整(zheng)(zheng)流(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan),适(shi)用(yong)于(yu)(yu)(yu)高(gao)(gao)频(pin)(pin)(pin)(pin)率(lv)(lv)(lv)的(de)(de)(de)电路(lu)场(chang)合,低频(pin)(pin)(pin)(pin)如(ru)工(gong)频(pin)(pin)(pin)(pin)50HZ以(yi)下用(yong)普(pu)通的(de)(de)(de)整(zheng)(zheng)流(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)就(jiu)好(hao)。快(kuai)恢(hui)(hui)复(fu)(fu)(fu)(fu)(fu)(fu)(fu)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)做整(zheng)(zheng)流(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)常(chang)用(yong)在在频(pin)(pin)(pin)(pin)率(lv)(lv)(lv)较(jiao)(jiao)高(gao)(gao)的(de)(de)(de)逆(ni)变电路(lu)中。但是(shi)由(you)(you)于(yu)(yu)(yu)整(zheng)(zheng)流(liu)(liu)(liu)(liu)电路(lu)由(you)(you)于(yu)(yu)(yu)频(pin)(pin)(pin)(pin)率(lv)(lv)(lv)很(hen)低,故(gu)只对耐压有(you)(you)要(yao)求,只要(yao)耐压能(neng)满足,肯定是(shi)可以(yi)代(dai)用(yong)的(de)(de)(de),且(qie)快(kuai)恢(hui)(hui)复(fu)(fu)(fu)(fu)(fu)(fu)(fu)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)也(ye)有(you)(you)用(yong)于(yu)(yu)(yu)整(zheng)(zheng)流(liu)(liu)(liu)(liu)的(de)(de)(de)情况(kuang),就(jiu)是(shi)在开(kai)关电源次级整(zheng)(zheng)流(liu)(liu)(liu)(liu)部份(fen),由(you)(you)于(yu)(yu)(yu)频(pin)(pin)(pin)(pin)率(lv)(lv)(lv)较(jiao)(jiao)高(gao)(gao),只能(neng)使用(yong)快(kuai)恢(hui)(hui)复(fu)(fu)(fu)(fu)(fu)(fu)(fu)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)整(zheng)(zheng)流(liu)(liu)(liu)(liu),否则由(you)(you)于(yu)(yu)(yu)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)损耗太大会(hui)造(zao)成(cheng)电源整(zheng)(zheng)体效率(lv)(lv)(lv)降(jiang)低,严重(zhong)(zhong)时(shi)(shi)会(hui)烧毁(hui)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)。另外快(kuai)恢(hui)(hui)复(fu)(fu)(fu)(fu)(fu)(fu)(fu)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)价格较(jiao)(jiao)整(zheng)(zheng)流(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)贵很(hen)多,耐压越(yue)高(gao)(gao)越(yue)贵,所以(yi)一(yi)般是(shi)不(bu)会(hui)拿(na)快(kuai)恢(hui)(hui)复(fu)(fu)(fu)(fu)(fu)(fu)(fu)二(er)(er)(er)(er)(er)代(dai)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)使用(yong)的(de)(de)(de)。之所以(yi)称其为(wei)快(kuai)速恢(hui)(hui)复(fu)(fu)(fu)(fu)(fu)(fu)(fu)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan),这(zhei)是(shi)因为(wei)普(pu)通整(zheng)(zheng)流(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)一(yi)般工(gong)作于(yu)(yu)(yu)低频(pin)(pin)(pin)(pin)(如(ru)市电频(pin)(pin)(pin)(pin)率(lv)(lv)(lv)为(wei)50Hz),其工(gong)作频(pin)(pin)(pin)(pin)率(lv)(lv)(lv)低于(yu)(yu)(yu)3kHz,当工(gong)作频(pin)(pin)(pin)(pin)率(lv)(lv)(lv)在几(ji)十至几(ji)百kHz时(shi)(shi),正反向(xiang)电压变化的(de)(de)(de)时(shi)(shi)间(jian)慢(man)于(yu)(yu)(yu)恢(hui)(hui)复(fu)(fu)(fu)(fu)(fu)(fu)(fu)时(shi)(shi)间(jian),普(pu)通整(zheng)(zheng)流(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)就(jiu)不(bu)能(neng)正常(chang)实现单向(xiang)导(dao)通了,这(zhei)时(shi)(shi)就(jiu)要(yao)用(yong)快(kuai)速恢(hui)(hui)复(fu)(fu)(fu)(fu)(fu)(fu)(fu)整(zheng)(zheng)流(liu)(liu)(liu)(liu)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)。快(kuai)速恢(hui)(hui)复(fu)(fu)(fu)(fu)(fu)(fu)(fu)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(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)(fu)(fu)(fu)(fu)时(shi)(shi)间(jian)很(hen)短,这(zhei)一(yi)特点使其适(shi)合高(gao)(gao)频(pin)(pin)(pin)(pin)整(zheng)(zheng)流(liu)(liu)(liu)(liu)。快(kuai)恢(hui)(hui)复(fu)(fu)(fu)(fu)(fu)(fu)(fu)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)有(you)(you)一(yi)个(ge)决定其性(xing)能(neng)的(de)(de)(de)重(zhong)(zhong)要(yao)参数——反向(xiang)恢(hui)(hui)复(fu)(fu)(fu)(fu)(fu)(fu)(fu)时(shi)(shi)间(jian)。反向(xiang)恢(hui)(hui)复(fu)(fu)(fu)(fu)(fu)(fu)(fu)时(shi)(shi)间(jian)的(de)(de)(de)定义是(shi),二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)从正向(xiang)导(dao)通状(zhuang)态急(ji)剧转(zhuan)换到截止(zhi)状(zhuang)态,从输出脉冲下降(jiang)到零线开(kai)始(shi)。Trr越(yue)小的(de)(de)(de)快(kuai)速恢(hui)(hui)复(fu)(fu)(fu)(fu)(fu)(fu)(fu)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)工(gong)作频(pin)(pin)(pin)(pin)率(lv)(lv)(lv)越(yue)高(gao)(gao)。MUR3060CTR是(shi)什么类型(xing)的(de)(de)(de)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)子(zi)?天津快(kuai)恢(hui)(hui)复(fu)(fu)(fu)(fu)(fu)(fu)(fu)二(er)(er)(er)(er)(er)极(ji)(ji)(ji)(ji)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)MURB1060

MUR2020CTR是什么类型(xing)的管(guan)子?TO263封装的快恢复二极(ji)管(guan)MURF2040CT

这种铜(tong)(tong)底(di)板(ban)(ban)尚存在一(yi)定(ding)弧度的(de)(de)焊成品,当(dang)模(mo)(mo)块(kuai)(kuai)(kuai)压装在散热器(qi)上(shang)时(shi),能保(bao)证它们之间(jian)(jian)(jian)的(de)(de)充(chong)分(fen)接触,有利(li)于(yu)热传导(dao)(dao),从而使模(mo)(mo)块(kuai)(kuai)(kuai)的(de)(de)接触热阻降低(di),有利(li)于(yu)模(mo)(mo)块(kuai)(kuai)(kuai)的(de)(de)出力和(he)可(ke)靠性(xing)。(3)由于(yu)FRED模(mo)(mo)块(kuai)(kuai)(kuai)工(gong)作(zuo)于(yu)高频(20kHZ以(yi)上(shang)),因此(ci)(ci),必须在结(jie)构设计要充(chong)分(fen)考虑消除寄生电(dian)(dian)(dian)(dian)(dian)(dian)感等问题,为(wei)此(ci)(ci),在电(dian)(dian)(dian)(dian)(dian)(dian)磁等原理基础上(shang),充(chong)分(fen)考虑三个主电(dian)(dian)(dian)(dian)(dian)(dian)极形状、布(bu)(bu)(bu)局和(he)走向(xiang),同时(shi)对键合(he)铝丝长(zhang)短和(he)走向(xiang)也(ye)作(zuo)了(le)合(he)适安排(pai)。以(yi)减少模(mo)(mo)块(kuai)(kuai)(kuai)内部的(de)(de)分(fen)布(bu)(bu)(bu)电(dian)(dian)(dian)(dian)(dian)(dian)感,确保(bao)二(er)单(dan)元的(de)(de)分(fen)布(bu)(bu)(bu)电(dian)(dian)(dian)(dian)(dian)(dian)感一(yi)致(zhi),从而解决模(mo)(mo)块(kuai)(kuai)(kuai)的(de)(de)噪(zao)音和(he)发热问题,提高装置(zhi)效率(lv)。3.主要技(ji)术参(can)数(shu)图3是FRED模(mo)(mo)块(kuai)(kuai)(kuai)导(dao)(dao)通(tong)和(he)关(guan)断期(qi)(qi)间(jian)(jian)(jian)的(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)和(he)电(dian)(dian)(dian)(dian)(dian)(dian)压波(bo)形图,它显示了(le)FRED器(qi)件从正(zheng)向(xiang)导(dao)(dao)通(tong)到反(fan)向(xiang)恢(hui)复(fu)的(de)(de)全过程。其主要关(guan)断特性(xing)参(can)数(shu)为(wei):反(fan)向(xiang)恢(hui)复(fu)时(shi)间(jian)(jian)(jian)trr=ta+tb(ta为(wei)少数(shu)载(zai)流(liu)子(zi)存储时(shi)间(jian)(jian)(jian),tb为(wei)少数(shu)载(zai)流(liu)子(zi)复(fu)合(he)时(shi)间(jian)(jian)(jian));软度因子(zi)S=(表(biao)示器(qi)件反(fan)向(xiang)恢(hui)复(fu)曲线(xian)的(de)(de)软度);反(fan)向(xiang)恢(hui)复(fu)峰(feng)值(zhi)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu):;反(fan)向(xiang)恢(hui)复(fu)电(dian)(dian)(dian)(dian)(dian)(dian)荷。而导(dao)(dao)通(tong)参(can)数(shu)为(wei):反(fan)向(xiang)重复(fu)峰(feng)值(zhi)电(dian)(dian)(dian)(dian)(dian)(dian)压URRM.;正(zheng)向(xiang)平均电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)IF(AV);正(zheng)向(xiang)峰(feng)值(zhi)电(dian)(dian)(dian)(dian)(dian)(dian)压UFM;正(zheng)向(xiang)均方根(gen)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)IF(RMS)和(he)正(zheng)向(xiang)浪涌电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)IFSM等。图2(a)预弯后的(de)(de)铜(tong)(tong)底(di)板(ban)(ban)(b)铜(tong)(tong)底(di)板(ban)(ban)与DBC基板(ban)(ban)焊接后的(de)(de)合(he)格品图3FRED导(dao)(dao)通(tong)和(he)关(guan)断期(qi)(qi)间(jian)(jian)(jian)的(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)和(he)电(dian)(dian)(dian)(dian)(dian)(dian)压波(bo)形图这里(li)需要注(zhu)意(yi)的(de)(de)是:trr随所加反(fan)向(xiang)电(dian)(dian)(dian)(dian)(dian)(dian)压UR的(de)(de)增加而增加,例如600V的(de)(de)FRED。TO263封装的(de)(de)快恢(hui)复(fu)二(er)极管MURF2040CT

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南昌停车棚定制

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充气式停(ting)车棚(peng)的灵活性高主要有以下哪些原因?1. 可(ke)移(yi)动性:充气式停(ting)车棚(peng)采用(yong)(yong)充气技(ji)术(shu),可(ke)以随时充气和放(fang)气,使其具有可(ke)移(yi)动性。用(yong)(yong)户可(ke)以根据需要将停(ting)车棚(peng)放(fang)置在不同的位置,无需进行复杂的拆卸和安(an)装过程。2. 。

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第6楼
共(gong)板 等 36 人赞同该回答

共板(ban)法(fa)(fa)兰(lan)风(feng)管(guan)是一种新型的风(feng)管(guan)连接方(fang)式,与传统的钢法(fa)(fa)兰(lan)风(feng)管(guan)相比,它(ta)在(zai)外观效果(guo)上有所改变(bian)。在(zai)选择哪家共板(ban)法(fa)(fa)兰(lan)风(feng)管(guan)好时(shi),可以考虑采用高科(ke)技、自动化的无法(fa)(fa)兰(lan)生产(chan)工(gong)艺(yi)(yi),代(dai)替半机械(xie)化或纯手工(gong)的有法(fa)(fa)兰(lan)工(gong)艺(yi)(yi)的生产(chan)过(guo)程(cheng) 。

宽城区养老护理院价格
第7楼
丰(feng)园(yuan) 等 89 人赞同该回答

丰园老年公寓设施齐全,居室(shi)(shi)内宽敞明亮,设有(you)医 用护(hu)理床、宽敞舒适的木制床、大(da)衣柜、挂衣架(jia),电视机(ji)等;室(shi)(shi)外(wai)有(you)室(shi)(shi)外(wai)广场、健(jian)身(shen)设施、休闲长廊、凉亭(ting)、室(shi)(shi)外(wai)拉链区。室(shi)(shi)内有(you)室(shi)(shi)内图书馆 娱(yu)乐区、保健(jian)室(shi)(shi),乒乓球室(shi)(shi)公寓 。

上海无纺布箱包套制袋机供应
第8楼
方法 等 99 人赞同该回(hui)答

方(fang)法原装日本NTK换能器及(ji)(ji)超声(sheng)波系统。整(zheng)机铸件及(ji)(ji)烤漆(qi)工艺,设备外观(guan)及(ji)(ji)性能。配置质量进口高速电(dian)机运作,全(quan)(quan)自动底盘旋(xuan)转式缝合(he)机,功率强(qiang)大,可根据不同面料、厚度调节功率。频率自动,无频电(dian)路(lu)全(quan)(quan)线保护,安全(quan)(quan)、可 。

太原挂轨式巡检仪
第9楼
西安 等 79 人赞(zan)同(tong)该回答

西安淘美克(ke)生产的轮式(shi)巡检(jian)机(ji)器(qi)人配备了多种传(chuan)感器(qi),用于(yu)避障(zhang)和环境监测。避障(zhang)传(chuan)感器(qi)具有0到3.0米(mi)的探测距离(li)和1厘米(mi)的检(jian)测精度(du),更新频率大于(yu)20Hz,能(neng)够快速、准(zhun)确(que)(que)地检(jian)测周围障(zhang)碍物,确(que)(que)保机(ji)器(qi)人安全运行。此(ci) 。

天津电动铆接
第10楼
Fi 等 38 人(ren)赞同该回答

FireBird®Pro–新型电(dian)池式电(dian)动铆螺母枪铆螺母安装工(gong)具-适用于(yu)规格(ge)高达M8钢制的铆螺母,拉(la)力大,速度快。FireBirdRPro增(zeng)强了Pro产品系列。15,000N的拉(la)力和历经考验的无(wu) 。

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