上海秦邦电子科技有限公司
T940N12TOF T143-800-18-N
  • T940N12TOF T143-800-18-N
  • T940N12TOF T143-800-18-N
  • T940N12TOF T143-800-18-N

产品描述

名称晶闸管 封装国际封装 批号new 型号齐全 包装盒装
特价供应WESTCODE、英飞凌、infineon、POWEREX等型号系列电力电子元器件。原装英国西码WESTCODE N系列相控可控硅、R系列快速可控硅、SM系列、SW系列普通二极管
晶闸管
T580N02TOF
T580N04TOF
T580N06TOF
T690N02TOF
T690N04TOF
T690N06TOF
T920N02TOF
T920N04TOF
T920N06TOF
T1080N02TOF
T1080N04TOF
T1080N06TOF
T1410N02TOF
T1410N04TOF
T1410N06TOF
T2510N02TOF
T2510N04TOF
T2510N06TOF
T3710N02TOF
T3710N04TOF
T3710N06TOF
T300N12TOF
T300N14TOF
T300N16TOF
T300N18TOF
T390N12TOF
T390N14TOF
T390N16TOF
T430N12TOF
T430N14TOF
T430N16TOF
T430N18TOF
T470N12TOF
T470N14TOF
T470N16TOF
T420N12TOF
T420N14TOF
T420N16TOF
T420N18TOF
T560N12TOF
T560N14TOF
T560N16TOF
T560N18TOF
T345N12TOF
T345N14TOF
T345N16TOF
T345N18TOF
T640N12TOF
T640N14TOF
T640N16TOF
T640N18TOF
T680N12TOF
T680N14TOF
T720N12TOF
T720N14TOF
T720N16TOF
T830N12TOF
T830N14TOF
T830N16TOF
T880N12TOF
T880N14TOF
T880N16TOF
T880N18TOF
T940N12TOF
T940N14TOF
T940N16TOF
T940N18TOF
T1190N12TOF
T1190N14TOF
T1190N16TOF
T1190N18TOF
T2180N12TOF
T2180N14TOF
T2180N16TOF
T2180N18TOF
T3160N12TOF
T3160N14TOF
T3160N16TOF
T3160N18TOF
T360N20TOF
T360N22TOF
T360N24TOF
T360N26TOF
T460N20TOF
T460N22TOF
T460N24TOF
T460N26TOF
T660N20TOF
T660N22TOF
T660N24TOF
T660N26TOF
T740N20TOF
T740N22TOF
T740N24TOF
T740N26TOF
T700N18TOF
T700N20TOF
T700N22TOF
T1040N18TOF
T1040N20TOF
T1040N22TOF
T1220N20TOF
T1220N22TOF
T1220N24TOF
T1220N26TOF
T1220N28TOF
T1330N18TOF
T1330N20TOF
T1330N22TOF
T1590N20TOF
T1590N22TOF
T1590N24TOF
T1590N26TOF
T1590N28TOF
T1960N18TOF
T1960N20TOF
T1960N22TOF
T2160N20TOF
T2160N22TOF
T2160N24TOF
T2160N26TOF
T2160N28TOF
T2480N22TOF
T2480N24TOF
T2480N26TOF
T2480N28TOF
T2810N16TOF
T2810N18TOF
T2810N20TOF
T2810N22TOF
T860N32TOF
T860N34TOF
T860N36TOF
T930N32TOF
T930N34TOF
T930N36TOF
T1930N30TOF
T1930N32TOF
T1930N34TOF
T1930N36TOF
T1930N38TOF
T1800N42TOF
高电压
T201N60TOH
T201N62TOH
T201N64TOH
T201N66TOH
T201N68TOH
T201N70TOH
T281N60TOF
T281N62TOF
T281N64TOF
T281N65TOF
T571N60TOF
T571N62TOF
T571N64TOF
T571N65TOF
T501N60TOH
T501N62TOH
T501N64TOH
T501N66TOH
T501N68TOH
T501N70TOH
T551N60TOF
T551N62TOF
T551N64TOF
T551N66TOF
T551N68TOF
T551N70TOF
T1620N65TOF
T1081N60TOH
T1081N62TOH
T1081N65TOH
T1081N66TOH
T1081N68TOH
T1081N70TOH
T1201N60TOH
T1201N62TOH
T1201N64TOH
T1201N66TOH
T1201N68TOH
T1201N70TOH
T1651N60TOH
T1651N62TOH
T1651N64TOH
T1651N66TOH
T1651N68TOH
T1651N70TOH
T1851N60TOH
T1851N62TOH
T1851N64TOH
T1851N66TOH
T1851N68TOH
T1851N70TOH
T1901N70TOH
T1901N72TOH
T1901N74TOH
T1901N76TOH
T1901N78TOH
T1901N80TOH
T2251N70TOH
T2251N72TOH
T2251N74TOH
T2251N76TOH
T2251N78TOH
T2251N80TOH
T2871N70TOH
T2871N72TOH
T2871N74TOH
T2871N76TOH
T2871N78TOH
T2871N80TOH
T3011N70TOH
T3011N72TOH
T3011N74TOH
T3011N76TOH
T3011N78TOH
T3011N80TOH
T940N12TOF
晶闸管的发展历史及制约因素
半导体的出现成为20世纪现代物理学其中一项重大的突破,标志着电子技术的诞生。而由于不同领域的实际需要,促使半导体器件自此分别向两个分支快速发展,其中一个分支即是以集成电路为代表的微电子器件,特点为小功率、集成化,作为信息的检出、传送和处理的工具;而另一类就是电力电子器件,特点为大功率、快速化。1955年,美国通用电气公司研发了世界上个以硅单晶为半导体整流材料的硅整流器(SR),1957年又开发了全球用于功率转换和控制的可控硅整流器(SCR)。由于它们具有体积小、重量轻、效率高、寿命长的优势,尤其是SCR能以微小的电流控制较大的功率,令半导体电力电子器件成功从弱电控制领域进入了强电控制领域、大功率控制领域。在整流器的应用上,晶闸管迅速取代了整流器(引燃管),实现整流器的固体化、静止化和无触点化,并获得巨大的节能效果。从1960年始,由普通晶闸管相继出了快速晶闸管、光控晶闸管、不对称晶闸管及双向晶闸管等各种特性的晶闸管,形成一个庞大的晶闸管家族。
但晶闸管本身存在两个制约其继续发展的重要因素。一是控制功能上的欠缺,普通的晶闸管属于半控型器件,通过门极(控制极)只能控制其开通而不能控制其关断,导通后控制极即不再起作用,要关断必须切断电源,即令流过晶闸管的正向电流小于维持电流。由于晶闸管的关断不可控的特性,必须另外配以由电感、电容及辅助开关器件等组成的强迫换流电路,从而使装置体积增大,成本增加,而且系统更为复杂、可靠性降低。二是因为此类器件立足于分立元件结构,开通损耗大,工作频率难以提高,限制了其应用范围。1970年代末,随着可关断晶闸管(GTO)日趋成熟,成功克服了普通晶闸管的缺陷,标志着电力电子器件已经从半控型器件发展到全控型器件
T940N12TOF
晶闸管的工作过程
晶闸管是四层三端器件,它有J1、J2、J3三个PN结,可以把它中间的NP分成两部分,构成一个PNP型三极管和一个NPN型三极管的复合管。
当晶闸管承受正向阳极电压时,为使晶闸管导通,必须使承受反向电压的PN结J2失去阻挡作用。每个晶体管的集电极电流同时就是另一个晶体管的基极电流。因此是两个互相复合的晶体管电路,当有足够的门极电流Ig流入时,就会形成强烈的正反馈,造成两晶体管饱和导通。
设PNP管和NPN管的集电极电流分别为IC1和IC2,发射极电流相应为Ia和Ik,电流放大系数相应为α1=IC1/Ia和α2=IC2/Ik,设流过J2结的反相漏电流为ICO,晶闸管的阳极电流等于两管的集电极电流和漏电流的总和:
Ia=IC1+IC2+ICO
=α1Ia+α2Ik+ICO (1)
若门极电流为Ig,则晶闸管阴极电流为:Ik=Ia+Ig。
硅PNP管和硅NPN管相应的电流放大系数α1和α2随其发射极电流的改变而急剧变化。当晶闸管承受正向阳极电压,而门极未接受电压的情况下,式(1)中Ig=0,(α1+α2)很小,故晶闸管的阳极电流Ia≈ICO,晶闸管处于正向阻断状态;当晶闸管在正向门极电压下,从门极G流入电流Ig,由于足够大的Ig流经NPN管的发射结,从而提高放大系数α2,产生足够大的集电极电流IC2流过PNP管的发射结,并提高了PNP管的电流放大系数α1,产生更大的集电极电流IC1流经NPN管的发射结,这样强烈的正反馈过程迅速进行。
当α1和α2随发射极电流增加而使得(α1+α2)≈1时,式(1)中的分母1-(α1+α2)≈0,因此提高了晶闸管的阳极电流Ia。这时,流过晶闸管的电流完全由主回路的电压和回路电阻决定,晶闸管已处于正向导通状态。晶闸管导通后,式(1)中1-(α1+α2)≈0,即使此时门极电流Ig=0,晶闸管仍能保持原来的阳极电流Ia而继续导通,门极已失去作用。在晶闸管导通后,如果不断地减小电源电压或增大回路电阻,使阳极电流Ia减小到维持电流IH以下时,由于α1和α2迅速下降,晶闸管恢复到阻断状态。
T940N12TOF
本公司长期供应三菱(MITSUBISHI)、富士(FUJI)、欧派克(EUPEC)、西门康(SEMIKRON)、西码(WESTCODE)、三社(SANREX) 、ABB公司现代功率器件(IGBT、GTR、IPM、PIM、GTO、单,双向可控硅、平板系列模块、熔断器等。具体型号如下:
西码平板可控硅
N0606YC200
N0606YC240
N0606YC250
N0606YC200
N0606YC240
N0606YC250
N1042LC120
N1042LC180
N1114LC120
N1114LC180
N1265LC120
N1265LC160
N1297NC200
N1297NC260
N0465WN140
N0465WN160
N0530YN220
N0530YN250
N0795YN140
N0795YN180
N1075LN180
N1140LN140
N1159NC380
N1159NC420
N0910LC200
N0910LC260
N1479NC24R
N1479NC30R
N1479NC240
N1479NC300
N1547NC160
N1547NC200
N1588NC200
N1588NC260
N1718NC120
N1718NC180
N1718NC200
N1802NC120
N1802NC160
N2046NC120
N2046NC160
N2086NC060
N2086NC100
N2600MC160
N2600MC180
N2825TE450
N2825TE400
N2825TJ400
N2825TJ450
N2830HE260
N2830HE280
N2900QL020
N2900QL040
N2900QL060
N3165HA260
N3165HA280
N3175HE160
N3175HE180
N3533ZC180
N3565HA160
N3565HA180
N3790TE240
N3790TE280
N3790TJ240
N3790TJ280
N4340TE180
N4340TE220
N4340TJ180
N4340TJ220
N0194WC120
N0194WC160
N0255WC120
N0255WC160
N0339WC120
N0339WC160
N0392WC120
N0392WC160
N0491WC040
N0491WC080
N0606YS200
N0606YS240
N0606YS250
N0616LC400
N0616LC450
N0634LC380
N0634LC420
N0646LC300
N0646LC360
N0676YS120
N0676YS180
N0734YS120
N0734YS160
N0782YS120
N0782YS160
N0845NC600
N0845NC650
N0845NG600
N0845NG650
N0882NC400
N0882NC450
N0910LS200
N0910LS260
N0992YS020
N0992YS060
N1010NC300
N1010NC380
N1042LS120
N1042LS180
N1114LS120
N1114LS160
N1114LS180
N1132NC300
N1132NC320
N1159NC380
N1159NC420
N1174JK200
N1174JK220
N1263JK160
N1263JK180
N1265LS120
N1265LS160
N1297NS200
N1297NS260
N1314NC300
N1314NC360
N1351VC400
N1351VC450
N1351VF400
N1351VF450
N1366JK080
N1366JK120
N1366JK140
N1449QL200
N1449QL220
N1467NS200
N1467NS260
N1479NS240
N1479NS300
N1581QL160
N1581QL180
N1547NS160
N1547NS200
N1588NS200
N1588NS260
N1651QK200
N1651QK220
N1661VC300
N1661VC360
N1661VF300
N1661VF360
N1712VC240
N1712VC300
N1712VF240
N1712VF300
N1718NS120
N1718NS180
N1718NS200
N1802NS120
N1802NS160
N1806QK160
N1806QK180
N1817QK080
N1817QK120
N1817QK140
N2046NS120
N2046NS160
N2083QK080
N2083QK120
N2083QK140
N2086NS060
N2086NS100
N2015ML200
N2015ML220
N2154JK020
N2154JK040
N2154JK060
N2172ZC400
N2172ZC450
N2172ZD400
N2172ZD450
N2191ML160
N2191ML180
N2293VC180
N2293VC220
N2293VF180
N2293VF220
N2367MK200
N2367MK220
N2418ZC300
N2418ZC360
N2418ZD300
N2418ZD360
N2500VC120
N2500VC160
N2500VF120
N2500VF160
N2520ML080
N2520ML120
N2520ML140
N2543ZC240
N2543ZC300
N2543ZD240
N2543ZD300
N2593MK160
N2593MK180
N2783QL020
N2783QL040
N2783QL060
N3012ZC200
N3012ZC260
N3012ZD200
N3012ZD260
N3022MK080
N3022MK120
N3022MK140
N3022ZC160
N3022ZC220
N3022ZD160
N3022ZD220
N3029ZC240
N3029ZC280
N3029ZD240
N3029ZD280
N3229QK020
N3229QK040
N3229QK060
N3533ZC140
N3533ZC200
N3533ZC220
N3533ZD140
N3533ZD200
N3533ZD220
N3597ML020
N3597ML040
N3597ML060
N3839TC300
N3839TC350
N3839TD300
N3839TD350
N3880ZD160
N3880ZD180
N3904HK200
N3904HK220
N3930ZC120
N3930ZC160
N3930ZD120
N3930ZD160
N4085ZC080
N4085ZC120
N4085ZD080
N4085ZD120
N4151FC360
N4151FC420
N4151FD360
N4151FD420
N4316MK020
N4316MK040
N4316MK060
N4400TC120
N4400TC160
N4400TC200
N4400TC220
N4400TC280
N4400TD120
N4400TD160
N4400TD200
N4400TD220
N4400TD280
N4472HK160
N4472HK180
N4803FC300
N4803FC350
N4803FD300
N4803FD350
N5177FC200
N5177FC280
N5177FD200
N5177FD280
N5946FC180
N5946FC220
N5946FD180
N5946FD220
N6012ZD020
N6012ZD040
N6012ZD060
N6974HK020
N6974HK040
N6974HK060
NX203MC300
NX203MC360
NX204MC240
NX204MC280
西码平板可控硅
K0349LC600
K0349LC650
K0349LG600
K0349LG650
K0443LC600
K0443LC650
K0443LG600
K0443LG650
K0566LC440
K0566LC480
K0566LC520
K0566LG440
K0566LG480
K0566LG520
K0620QA600
K0620QA650
K0620QE600
K0620QE650
K0682LC360
K0682LC420
K0682LG360
K0682LG420
K0769NC600
K0769NC650
K0769NG600
K0769NG650
K0885NC450
K0885NC480
K0885NC520
K0885NG450
K0885NG480
K0885NG520
K0890NC360
K0890NC420
K1000MA600
K1000MA650
K1000ME600
K1000ME650
K1120NC360
K1120NC420
K1120NG360
K1120NG420
K1121NC320
K1121NC360
K1197NC300
K1197NC320
K1351VC600
K1351VC650
K1351VF600
K1351VF650
K1947ZC400
K1947ZC450
K1947ZD400
K1947ZD450
K2065VC360
K2065VC420
K2065VF360
K2065VF420
K2095ZC360
K2095ZC420
K2095ZD360
K2095ZD420
K2359TC600
K2359TC650
K2359TD600
K2359TD650
K2623TC450
K2623TC480
K2623TC520
K2623TD450
K2623TD480
K2623TD520
K2960TC450
K2960TC480
K2960TC520
K2960TD450
K2960TD480
K2960TD520
K2973FC600
K2973FC650
K2973FD600
K2973FD650
K3207EC450
K3207EC480
K3207EC520
K3362TC360
K3362TC420
K3362TD360
K3362TD420
K3503FC450
K3503FC480
K3503FC520
K3503FD450
K3503FD480
K3503FD520
-/gbaibbi/-

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