QV0201~0603E系列ESD靜(jing)電(dian)防護(hu)貼片(pian)壓(ya)敏電(dian)阻介紹:
氧(yang)(yang)化(hua)鋅壓敏電阻是一(yi)種以氧(yang)(yang)化(hua)鋅為主(zhu)體(ti)、添加(jia)多(duo)種金屬氧(yang)(yang)化(hua)物為添加(jia)劑、經過空氣中高(gao)溫燒結而制(zhi)成的(de)多(duo)晶半導體(ti)陶瓷元件。壓敏
電阻是一種(zhong)限(xian)壓(ya)型保護器件(jian)。壓(ya)敏電(dian)(dian)阻(zu)和被保護電(dian)(dian)路元(yuan)件(jian)并聯在(zai)電(dian)(dian)路中(zhong)(zhong),當電(dian)(dian)路中(zhong)(zhong)出現雷電(dian)(dian)過電(dian)(dian)壓(ya)、靜(jing)電(dian)(dian)過電(dian)(dian)壓(ya)或瞬(shun)態(tai)操(cao)作過電(dian)(dian)壓(ya)
時(shi),利(li)用(yong)壓敏(min)電(dian)(dian)阻(zu)的(de)(de)(de)非(fei)線性特(te)性,壓敏(min)電(dian)(dian)阻(zu)會以納秒級時間(jian)的(de)(de)(de)響(xiang)應速度將兩端電(dian)(dian)壓迅速下(xia)降鉗位到一個(ge)相(xiang)對固定(ding)的(de)(de)(de)安全(quan)電(dian)(dian)壓值,從
而避免被保護電(dian)路元件遭(zao)受過(guo)電(dian)壓的沖擊而損(sun)壞(huai)。
當施(shi)加(jia)于壓(ya)(ya)(ya)敏(min)(min)電(dian)(dian)阻(zu)器(qi)(qi)兩端(duan)電(dian)(dian)壓(ya)(ya)(ya)小(xiao)于其壓(ya)(ya)(ya)敏(min)(min)電(dian)(dian)壓(ya)(ya)(ya),壓(ya)(ya)(ya)敏(min)(min)電(dian)(dian)阻(zu)器(qi)(qi)相(xiang)當于10MΩ以上絕緣電(dian)(dian)阻(zu);當在壓(ya)(ya)(ya)敏(min)(min)電(dian)(dian)阻(zu)器(qi)(qi)兩端(duan)施(shi)加(jia)大(da)于壓(ya)(ya)(ya)敏(min)(min)電(dian)(dian)壓(ya)(ya)(ya)的過
電壓(ya)時(shi),壓(ya)敏(min)電(dian)阻器的電(dian)阻急劇下降呈現低阻態(tai),從而(er)把電(dian)荷(he)快速(su)導走,有效地(di)保護了電(dian)路中的其它元器件不致過壓(ya)而(er)損壞。
QV0201~0603E系列ESD靜電防護(hu)貼(tie)片壓敏(min)電阻特點(dian):
1) SMD小(xiao)型(xing)貼(tie)片,節省空(kong)間,方便生產;
2) 響應時間為ns級(ji),響應速度滿足各種電路保護要(yao)求;
3) 雙向無極(ji)性(xing)保(bao)護,鉗(qian)位電壓低;
4) 優秀的(de)可(ke)焊性(Ni,Sn鍍(du)層);
5) 符(fu)合RoHS環(huan)保(bao)標準;
QV0201~0603E系列ESD靜電防護貼(tie)片(pian)壓敏電阻(zu)應用范(fan)圍(wei):
1) IC和晶體(ti)管的瞬態電(dian)壓保護(hu),用于移動通信、計算機/ EDP、LCD模(mo)塊、手(shou)持/便攜式(shi)設備、PDA等;
2) 視頻和音(yin)頻線I / O端(duan)口、高速數據線(如HDMI、USB 3.0、IEEE 1394接口、射頻天線、射頻模塊)的(de)ESD保護;
3) ESD保護符合IEC 61000-4-2(4級)
QV0201~0603E系列ESD靜電防(fang)護貼片壓敏(min)電阻產(chan)品參數:
類別 | 尺寸 L×W×T(mm) | 最大工作電壓 VDC(V) | 電容(rong)量 Cp(pF) | 最大浪涌電流 @8/20μs(A) |
QV0201*E | 0.60×0.30×0.30 | 5.5~9 | 0.1~80 | 1~10 |
QV0402*E | 1.00×0.50×0.50 | 5.5~30 | 0.1~230 | 1~20 |
QV0603*E | 1.60×0.80×0.80 | 5.5~30 | 0.1~820 | 1~30 |