在(zai)使(shi)(shi)(shi)用(yong)(yong)(yong)二(er)(er)(er)(er)极管(guan)(guan)(guan)时，应(ying)注(zhu)意(yi)其封装(zhuang)和(he)(he)(he)引脚的(de)(de)限(xian)制(zhi)(zhi)，超过限(xian)制(zhi)(zhi)会导致二(er)(er)(er)(er)极管(guan)(guan)(guan)无法安装(zhuang)或者(zhe)连(lian)接不良。在(zai)使(shi)(shi)(shi)用(yong)(yong)(yong)二(er)(er)(er)(er)极管(guan)(guan)(guan)时，应(ying)注(zhu)意(yi)其电(dian)路(lu)布局和(he)(he)(he)防(fang)静电(dian)措施，避免静电(dian)干扰(rao)和(he)(he)(he)电(dian)路(lu)噪(zao)声影响二(er)(er)(er)(er)极管(guan)(guan)(guan)的(de)(de)正常工(gong)作(zuo)(zuo)。在(zai)使(shi)(shi)(shi)用(yong)(yong)(yong)二(er)(er)(er)(er)极管(guan)(guan)(guan)时，应(ying)注(zhu)意(yi)其与(yu)其他(ta)器(qi)件的(de)(de)匹(pi)配和(he)(he)(he)配合，避免电(dian)路(lu)不匹(pi)配或者(zhe)不兼容导致二(er)(er)(er)(er)极管(guan)(guan)(guan)损坏或者(zhe)电(dian)路(lu)无法正常工(gong)作(zuo)(zuo)。在(zai)使(shi)(shi)(shi)用(yong)(yong)(yong)二(er)(er)(er)(er)极管(guan)(guan)(guan)时，应(ying)注(zhu)意(yi)其使(shi)(shi)(shi)用(yong)(yong)(yong)场景和(he)(he)(he)应(ying)用(yong)(yong)(yong)要(yao)求，选择(ze)合适的(de)(de)二(er)(er)(er)(er)极管(guan)(guan)(guan)型号和(he)(he)(he)参(can)数，以满足(zu)电(dian)路(lu)的(de)(de)需求和(he)(he)(he)性能要(yao)求。在(zai)使(shi)(shi)(shi)用(yong)(yong)(yong)二(er)(er)(er)(er)极管(guan)(guan)(guan)时，应(ying)注(zhu)意(yi)其使(shi)(shi)(shi)用(yong)(yong)(yong)方法和(he)(he)(he)操(cao)作(zuo)(zuo)规范，遵循相关(guan)的(de)(de)安全(quan)和(he)(he)(he)操(cao)作(zuo)(zuo)规程，确保二(er)(er)(er)(er)极管(guan)(guan)(guan)的(de)(de)安全(quan)和(he)(he)(he)可靠性。ESD静电(dian)保护二(er)(er)(er)(er)极管(guan)(guan)(guan)厂家就(jiu)找(zhao)成(cheng)都(dou)长(zhang)九电(dian)子科技有限(xian)公司。西藏TVS二(er)(er)(er)(er)极管(guan)(guan)(guan)经销商

二(er)极管(guan)(guan)温(wen)(wen)(wen)度(du)补(bu)偿电(dian)路(lu)(lu)及故(gu)障处理众所周知，PN结(jie)(jie)导(dao)(dao)通后有(you)(you)一个约(yue)为(wei)0.6V（指(zhi)硅材料PN结(jie)(jie)）的压降(jiang)，同时(shi)PN结(jie)(jie)还有(you)(you)一个与温(wen)(wen)(wen)度(du)相(xiang)关(guan)的特(te)性：PN结(jie)(jie)导(dao)(dao)通后的压降(jiang)基(ji)本(ben)不变(bian)，但不是(shi)不变(bian)，PN结(jie)(jie)两端的压降(jiang)随温(wen)(wen)(wen)度(du)升高而(er)略(lve)有(you)(you)下降(jiang)，温(wen)(wen)(wen)度(du)愈高其下降(jiang)的量愈多，当然PN结(jie)(jie)两端电(dian)压下降(jiang)量的值(zhi)对(dui)于0.6V而(er)言相(xiang)当小，利用这一特(te)性可以构(gou)(gou)(gou)成(cheng)(cheng)(cheng)(cheng)温(wen)(wen)(wen)度(du)补(bu)偿电(dian)路(lu)(lu)。如(ru)图(tu)9-42所示(shi)是(shi)利用二(er)极管(guan)(guan)温(wen)(wen)(wen)度(du)特(te)性构(gou)(gou)(gou)成(cheng)(cheng)(cheng)(cheng)的温(wen)(wen)(wen)度(du)补(bu)偿电(dian)路(lu)(lu)。对(dui)于初学者来(lai)讲，看(kan)不懂电(dian)路(lu)(lu)中(zhong)(zhong)VT1等元(yuan)(yuan)器件(jian)构(gou)(gou)(gou)成(cheng)(cheng)(cheng)(cheng)的是(shi)一种放大器，这对(dui)分(fen)析(xi)(xi)这一电(dian)路(lu)(lu)工作(zuo)原理不利。在(zai)电(dian)路(lu)(lu)分(fen)析(xi)(xi)中(zhong)(zhong)，熟悉VT1等元(yuan)(yuan)器件(jian)所构(gou)(gou)(gou)成(cheng)(cheng)(cheng)(cheng)的单元(yuan)(yuan)电(dian)路(lu)(lu)功(gong)能，对(dui)分(fen)析(xi)(xi)VD1工作(zuo)原理有(you)(you)着积极意义(yi)。了(le)解了(le)单元(yuan)(yuan)电(dian)路(lu)(lu)的功(gong)能，一切电(dian)路(lu)(lu)分(fen)析(xi)(xi)就可以围绕它进行展开，做到(dao)有(you)(you)的放矢(shi)、事半(ban)功(gong)倍。云南汽车电(dian)子TVS二(er)极管(guan)(guan)厂地址四川ESD静(jing)电(dian)保护二(er)极管(guan)(guan)厂家就找成(cheng)(cheng)(cheng)(cheng)都长九(jiu)电(dian)子科(ke)技(ji)有(you)(you)限公司。

分(fen)(fen)析一(yi)(yi)个从(cong)没(mei)有(you)(you)(you)见过(guo)的(de)电(dian)(dian)(dian)(dian)路(lu)(lu)工(gong)作(zuo)原理是(shi)(shi)困(kun)难的(de)，对基础知(zhi)识不的(de)初学(xue)者而言就更加困(kun)难了。关于(yu)这(zhei)一(yi)(yi)电(dian)(dian)(dian)(dian)路(lu)(lu)的(de)分(fen)(fen)析思(si)路(lu)(lu)主要说明(ming)如下。（1）从(cong)电(dian)(dian)(dian)(dian)路(lu)(lu)中可以看出(chu)3只(zhi)二(er)极(ji)(ji)管(guan)(guan)串联(lian)，根据(ju)串联(lian)电(dian)(dian)(dian)(dian)路(lu)(lu)特性(xing)可知(zhi)，这(zhei)3只(zhi)二(er)极(ji)(ji)管(guan)(guan)如果导(dao)通(tong)(tong)会(hui)同(tong)时(shi)(shi)导(dao)通(tong)(tong)，如果截(jie)止会(hui)同(tong)时(shi)(shi)截(jie)止。（2）根据(ju)二(er)极(ji)(ji)管(guan)(guan)是(shi)(shi)否(fou)导(dao)通(tong)(tong)的(de)判(pan)断原则分(fen)(fen)析，在(zai)二(er)极(ji)(ji)管(guan)(guan)的(de)正(zheng)(zheng)极(ji)(ji)接(jie)有(you)(you)(you)比(bi)负极(ji)(ji)高得多的(de)电(dian)(dian)(dian)(dian)压，无(wu)论是(shi)(shi)直(zhi)流(liu)(liu)(liu)(liu)(liu)还(hai)是(shi)(shi)交流(liu)(liu)(liu)(liu)(liu)的(de)电(dian)(dian)(dian)(dian)压，此时(shi)(shi)二(er)极(ji)(ji)管(guan)(guan)均处(chu)于(yu)导(dao)通(tong)(tong)状(zhuang)态。从(cong)电(dian)(dian)(dian)(dian)路(lu)(lu)中可以看出(chu)，在(zai)VD1正(zheng)(zheng)极(ji)(ji)通(tong)(tong)过(guo)电(dian)(dian)(dian)(dian)阻R1接(jie)电(dian)(dian)(dian)(dian)路(lu)(lu)中的(de)直(zhi)流(liu)(liu)(liu)(liu)(liu)工(gong)作(zuo)电(dian)(dian)(dian)(dian)压+V，VD3的(de)负极(ji)(ji)接(jie)地，这(zhei)样在(zai)3只(zhi)串联(lian)二(er)极(ji)(ji)管(guan)(guan)上(shang)加有(you)(you)(you)足够(gou)大的(de)正(zheng)(zheng)向直(zhi)流(liu)(liu)(liu)(liu)(liu)电(dian)(dian)(dian)(dian)压。由此分(fen)(fen)析可知(zhi)，3只(zhi)二(er)极(ji)(ji)管(guan)(guan)VD1、VD2和VD3是(shi)(shi)在(zai)直(zhi)流(liu)(liu)(liu)(liu)(liu)工(gong)作(zuo)电(dian)(dian)(dian)(dian)压+V作(zuo)用下导(dao)通(tong)(tong)的(de)。（3）从(cong)电(dian)(dian)(dian)(dian)路(lu)(lu)中还(hai)可以看出(chu)，3只(zhi)二(er)极(ji)(ji)管(guan)(guan)上(shang)没(mei)有(you)(you)(you)加入交流(liu)(liu)(liu)(liu)(liu)信号电(dian)(dian)(dian)(dian)压，因(yin)为在(zai)VD1正(zheng)(zheng)极(ji)(ji)即电(dian)(dian)(dian)(dian)路(lu)(lu)中的(de)A点与地之间接(jie)有(you)(you)(you)大容量电(dian)(dian)(dian)(dian)容C1，将A点的(de)任何交流(liu)(liu)(liu)(liu)(liu)电(dian)(dian)(dian)(dian)压旁路(lu)(lu)到地端。

反(fan)(fan)向(xiang)击(ji)(ji)穿(chuan)按机理分(fen)为齐(qi)纳击(ji)(ji)穿(chuan)和雪崩(beng)击(ji)(ji)穿(chuan)两种(zhong)(zhong)情况。在高(gao)掺杂(za)浓度的情况下，因势垒区宽度很小，反(fan)(fan)向(xiang)电压(ya)较(jiao)大时，破坏了势垒区内共价(jia)(jia)(jia)键(jian)结构(gou)，使(shi)价(jia)(jia)(jia)电子(zi)(zi)脱(tuo)离共价(jia)(jia)(jia)键(jian)束缚，产生(sheng)电子(zi)(zi)-空穴对，致使(shi)电流(liu)急剧(ju)增(zeng)大，这(zhei)种(zhong)(zhong)击(ji)(ji)穿(chuan)称为齐(qi)纳击(ji)(ji)穿(chuan)。如果掺杂(za)浓度较(jiao)低，势垒区宽度较(jiao)宽，不容(rong)易产生(sheng)齐(qi)纳击(ji)(ji)穿(chuan)。雪崩(beng)击(ji)(ji)穿(chuan)另一种(zhong)(zhong)击(ji)(ji)穿(chuan)为雪崩(beng)击(ji)(ji)穿(chuan)。当反(fan)(fan)向(xiang)电压(ya)增(zeng)加到较(jiao)大数(shu)值时，外加电场(chang)使(shi)电子(zi)(zi)漂移速度加快，从而与(yu)共价(jia)(jia)(jia)键(jian)中的价(jia)(jia)(jia)电子(zi)(zi)相碰撞(zhuang)(zhuang)(zhuang)，把价(jia)(jia)(jia)电子(zi)(zi)撞(zhuang)(zhuang)(zhuang)出(chu)(chu)共价(jia)(jia)(jia)键(jian)，产生(sheng)新(xin)的电子(zi)(zi)-空穴对。新(xin)产生(sheng)的电子(zi)(zi)-空穴被电场(chang)加速后又撞(zhuang)(zhuang)(zhuang)出(chu)(chu)其它价(jia)(jia)(jia)电子(zi)(zi)，载流(liu)子(zi)(zi)雪崩(beng)式地增(zeng)加，致使(shi)电流(liu)急剧(ju)增(zeng)加，这(zhei)种(zhong)(zhong)击(ji)(ji)穿(chuan)称为雪崩(beng)击(ji)(ji)穿(chuan)。无论哪种(zhong)(zhong)击(ji)(ji)穿(chuan)，若对其电流(liu)不加限制，都可能造成PN结长(zhang)久性损坏。云南车规级TVS二(er)极管厂(chang)家就找成都长(zhang)九电子(zi)(zi)科技有限公司(si)。

在使用(yong)(yong)(yong)二(er)(er)极(ji)管(guan)(guan)(guan)(guan)进行(xing)(xing)发光和(he)(he)显示(shi)时(shi)(shi)，应(ying)注(zhu)意(yi)其(qi)(qi)亮度(du)和(he)(he)色彩的(de)(de)限(xian)制(zhi)(zhi)，超(chao)(chao)过(guo)限(xian)制(zhi)(zhi)会(hui)(hui)导(dao)(dao)致显示(shi)效(xiao)果(guo)不佳(jia)或者无(wu)法(fa)正(zheng)常显示(shi)。在使用(yong)(yong)(yong)二(er)(er)极(ji)管(guan)(guan)(guan)(guan)进行(xing)(xing)电源管(guan)(guan)(guan)(guan)理(li)和(he)(he)节能(neng)(neng)时(shi)(shi)，应(ying)注(zhu)意(yi)其(qi)(qi)功(gong)耗(hao)和(he)(he)效(xiao)率的(de)(de)限(xian)制(zhi)(zhi)，超(chao)(chao)过(guo)限(xian)制(zhi)(zhi)会(hui)(hui)导(dao)(dao)致电源损(sun)耗(hao)过(guo)大或者节能(neng)(neng)效(xiao)果(guo)不佳(jia)。在使用(yong)(yong)(yong)二(er)(er)极(ji)管(guan)(guan)(guan)(guan)时(shi)(shi)，应(ying)注(zhu)意(yi)其(qi)(qi)工作温(wen)度(du)范围(wei)和(he)(he)环境条件的(de)(de)限(xian)制(zhi)(zhi)，超(chao)(chao)过(guo)限(xian)制(zhi)(zhi)会(hui)(hui)导(dao)(dao)致二(er)(er)极(ji)管(guan)(guan)(guan)(guan)损(sun)坏或者电路无(wu)法(fa)正(zheng)常工作。在使用(yong)(yong)(yong)二(er)(er)极(ji)管(guan)(guan)(guan)(guan)时(shi)(shi)，应(ying)注(zhu)意(yi)其(qi)(qi)静态和(he)(he)动态特性(xing)的(de)(de)限(xian)制(zhi)(zhi)，超(chao)(chao)过(guo)限(xian)制(zhi)(zhi)会(hui)(hui)导(dao)(dao)致电路失效(xiao)或者性(xing)能(neng)(neng)下降。在使用(yong)(yong)(yong)二(er)(er)极(ji)管(guan)(guan)(guan)(guan)时(shi)(shi)，应(ying)注(zhu)意(yi)其(qi)(qi)寿(shou)命(ming)和(he)(he)可靠(kao)性(xing)的(de)(de)限(xian)制(zhi)(zhi)，超(chao)(chao)过(guo)限(xian)制(zhi)(zhi)会(hui)(hui)导(dao)(dao)致二(er)(er)极(ji)管(guan)(guan)(guan)(guan)寿(shou)命(ming)缩短或者失效(xiao)。云南汽车二(er)(er)极(ji)管(guan)(guan)(guan)(guan)厂(chang)家(jia)就找成都长(zhang)九电子科技有限(xian)公司。重庆ESD二(er)(er)极(ji)管(guan)(guan)(guan)(guan)厂(chang)价(jia)

云南(nan)防雷二极(ji)(ji)管厂家就(jiu)找成都长九电子科技有限公司。西藏TVS二极(ji)(ji)管经(jing)销商

二(er)(er)极(ji)(ji)(ji)管在(zai)使用时需(xu)要注意(yi)(yi)其(qi)正(zheng)(zheng)(zheng)负(fu)(fu)极(ji)(ji)(ji)性(xing)，正(zheng)(zheng)(zheng)极(ji)(ji)(ji)应(ying)(ying)连(lian)接在(zai)电(dian)(dian)源的(de)(de)(de)正(zheng)(zheng)(zheng)极(ji)(ji)(ji)，负(fu)(fu)极(ji)(ji)(ji)应(ying)(ying)连(lian)接在(zai)电(dian)(dian)源的(de)(de)(de)负(fu)(fu)极(ji)(ji)(ji)，否(fou)则会(hui)(hui)导致(zhi)电(dian)(dian)路(lu)(lu)无法(fa)正(zheng)(zheng)(zheng)常工作(zuo)(zuo)(zuo)或(huo)(huo)者(zhe)损坏二(er)(er)极(ji)(ji)(ji)管。在(zai)使用二(er)(er)极(ji)(ji)(ji)管进(jin)(jin)行(xing)整流(liu)时，应(ying)(ying)注意(yi)(yi)其(qi)比较大反向电(dian)(dian)压(ya)和比较大正(zheng)(zheng)(zheng)向电(dian)(dian)流(liu)的(de)(de)(de)限(xian)制(zhi)(zhi)(zhi)，超(chao)过限(xian)制(zhi)(zhi)(zhi)会(hui)(hui)导致(zhi)二(er)(er)极(ji)(ji)(ji)管损坏或(huo)(huo)者(zhe)电(dian)(dian)路(lu)(lu)无法(fa)正(zheng)(zheng)(zheng)常工作(zuo)(zuo)(zuo)。在(zai)使用二(er)(er)极(ji)(ji)(ji)管进(jin)(jin)行(xing)稳压(ya)时，应(ying)(ying)注意(yi)(yi)其(qi)反向击穿电(dian)(dian)压(ya)和反向漏电(dian)(dian)流(liu)的(de)(de)(de)限(xian)制(zhi)(zhi)(zhi)，超(chao)过限(xian)制(zhi)(zhi)(zhi)会(hui)(hui)导致(zhi)二(er)(er)极(ji)(ji)(ji)管损坏或(huo)(huo)者(zhe)电(dian)(dian)路(lu)(lu)无法(fa)正(zheng)(zheng)(zheng)常工作(zuo)(zuo)(zuo)。在(zai)使用二(er)(er)极(ji)(ji)(ji)管进(jin)(jin)行(xing)开关(guan)控制(zhi)(zhi)(zhi)时，应(ying)(ying)注意(yi)(yi)其(qi)正(zheng)(zheng)(zheng)向导通电(dian)(dian)压(ya)和反向截止(zhi)电(dian)(dian)压(ya)的(de)(de)(de)限(xian)制(zhi)(zhi)(zhi)，超(chao)过限(xian)制(zhi)(zhi)(zhi)会(hui)(hui)导致(zhi)二(er)(er)极(ji)(ji)(ji)管损坏或(huo)(huo)者(zhe)电(dian)(dian)路(lu)(lu)无法(fa)正(zheng)(zheng)(zheng)常工作(zuo)(zuo)(zuo)。西藏(zang)TVS二(er)(er)极(ji)(ji)(ji)管经销(xiao)商

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