QV2220H系列貼(tie)片(pian)壓敏(min)電(dian)阻介紹(shao):
氧化(hua)鋅(xin)壓敏電阻是一(yi)種以氧化(hua)鋅(xin)為主體、添(tian)(tian)加多(duo)種金屬氧化(hua)物(wu)為添(tian)(tian)加劑、經過空(kong)氣(qi)中高溫燒結而(er)制成(cheng)的多(duo)晶(jing)半導體陶(tao)瓷元件。壓敏
電阻是一種限壓(ya)(ya)型(xing)保護器(qi)件。壓(ya)(ya)敏電(dian)(dian)(dian)(dian)阻和(he)被(bei)保護電(dian)(dian)(dian)(dian)路(lu)元(yuan)件并聯在(zai)電(dian)(dian)(dian)(dian)路(lu)中(zhong),當電(dian)(dian)(dian)(dian)路(lu)中(zhong)出(chu)現雷電(dian)(dian)(dian)(dian)過電(dian)(dian)(dian)(dian)壓(ya)(ya)、靜電(dian)(dian)(dian)(dian)過電(dian)(dian)(dian)(dian)壓(ya)(ya)或瞬態操(cao)作過電(dian)(dian)(dian)(dian)壓(ya)(ya)
時,利(li)用壓敏電阻的(de)非線性特性,壓敏電阻會以(yi)納秒級時間的(de)響應速度將兩(liang)端電壓迅速下降鉗位到(dao)一(yi)個相(xiang)對固(gu)定的(de)安全電壓值,從
而避免被(bei)保護電(dian)(dian)路元件遭受(shou)過(guo)電(dian)(dian)壓的沖(chong)擊而損(sun)壞。
當施(shi)加(jia)于(yu)壓(ya)(ya)敏電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)器(qi)(qi)兩端電(dian)(dian)(dian)(dian)壓(ya)(ya)小于(yu)其壓(ya)(ya)敏電(dian)(dian)(dian)(dian)壓(ya)(ya),壓(ya)(ya)敏電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)器(qi)(qi)相當于(yu)10MΩ以上絕緣電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu);當在(zai)壓(ya)(ya)敏電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)器(qi)(qi)兩端施(shi)加(jia)大(da)于(yu)壓(ya)(ya)敏電(dian)(dian)(dian)(dian)壓(ya)(ya)的過
電壓時,壓敏電(dian)阻器的電(dian)阻急劇下降(jiang)呈現(xian)低(di)阻態,從而把(ba)電(dian)荷快速導(dao)走,有(you)效地保護(hu)了電(dian)路中的其它元器件不致(zhi)過壓而損壞。
多層(ceng)片式壓敏電阻是貼(tie)片封裝的壓敏電阻器,采用多層(ceng)獨石(shi)結(jie)構,具備(bei)寄生電感(gan)小(xiao)、體積(ji)小(xiao)、SMT效率高、響應時間短、工作(zuo)溫度(du)高、
保護(hu)能力(li)強的優勢。恭成科技(ji)QV****H系列貼片壓敏電(dian)阻應(ying)用于100V以內低(di)(di)電(dian)壓電(dian)路(lu),包括(kuo)DC電(dian)源和低(di)(di)頻信號線進行雷擊、浪涌防護(hu),
吸收并衰(shuai)減脈沖能(neng)量,可(ke)以吸收線路(lu)內部產生的(de)操(cao)作過(guo)電(dian)壓(ya)(整流、逆變換、變壓(ya)器(qi)產生的(de)電(dian)磁脈沖和線路(lu)浪涌)及(ji)衰(shuai)減后的(de)雷電(dian)感(gan)
應過電壓,用(yong)(yong)作(zuo)二級防護(可代(dai)替SMAJ/SMBJ的TVS),同時部分應用(yong)(yong)于手機、LCD-TV/STB/電腦(nao)等的通信接口(kou)進(jin)行ESD靜電防護,替代(dai)
TVS使用。
QV2220H系列貼片壓敏電阻特(te)點:
1) SMD小型貼片,節(jie)省空(kong)間,方便生(sheng)產;
2) 響(xiang)應時間為ns級,響(xiang)應速度滿足各種電路保護要求;
3) 高浪涌抑制,同體積浪涌能(neng)力(li)遠(yuan)大于(yu)TVS;
4) 高溫(wen)性(xing)能穩定,125℃不降額;
5) 低的漏電流IL<10μA;
6) 雙向無(wu)極性(xing)保護,鉗位電壓(ya)低;
7) 優于UL94V-0可燃性(xing)等級;
8) 符(fu)合RoHS環(huan)保標準
QV2220H系列貼片壓敏電阻應用范圍(wei):
1) 汽車(che)電子應用:汽車(che)的(de)控制單元(yuan)、電液(ye)制動(dong)(dong)、ABS / ESP、天窗、車(che)窗控制等負載(zai)突降保護(hu)和迅速啟動(dong)(dong)保護(hu);
2) 工業儀表、控(kong)制與(yu)測(ce)量(liang)設備、安防攝像頭、電子電度(du)表控(kong)制板;
3) 5G通訊基(ji)站、網(wang)通設(she)備、網(wang)絡產品接口、漏(lou)電(dian)保護器控制板(ban);
4) 視頻(pin)和(he)音頻(pin)線(xian)I / O端口、高速數據線(xian)(如HDMI、USB 3.0、IEEE 1394接(jie)口、射頻(pin)天線(xian)、射頻(pin)模塊)的(de)ESD保護;
5) IEC 61000-4-5的浪涌保護(hu)(hu),IEC 61000-4-4的EFT保護(hu)(hu),ESD保護(hu)(hu)符合IEC 61000-4-2(4級)
QV2220H系(xi)列貼片壓敏電阻(zu)性能(neng)參數:
1) 結構與尺寸;
類型 | L(mm) | W(mm) | T(mm) | a(mm) |
2220 | 5.7±0.4 | 5.0±0.4 | 2.5 Max. | 0.25~1.0 |
部分 | ① | ② | ③ |
組成 | 片式(shi)壓敏(min)電阻用 ZnO半(ban)導體陶瓷 | 內電極(ji) (Ag 或 Ag-Pd) | 端電極 (Ag/Ni/Sn 三(san)層) |
2) 電(dian)性能參(can)數:
型(xing)號 Part No. | 最大工作電壓 Max. Working Voltage | 壓敏電壓 Varistor Voltage @1mA DC | 最大限(xian)位電壓 Max. Clamping Voltage (8/20μs) | 峰值電流 Peak Current (8/20μs) | 能(neng)量耐量 Energy (10/1000μs) | |||
VDC(V) | VAC(V) | VB(V) | ΔVB | Vc(V) | Ic(A) | Ip(A) | WT (J) | |
QV2220H260KT | 26 | 20 | 36 | ± 10% | 60 | 5.0 | 1200 | 5.0 |
QV2220H300KT | 30 | 25 | 41 | ± 10% | 70 | 5.0 | 1200 | 5.0 |
QV2220H330KT | 33 | 26 | 44 | ± 10% | 75 | 5.0 | 1200 | 5.0 |
QV2220H380KT | 38 | 30 | 50 | ± 10% | 85 | 5.0 | 1200 | 5.0 |
QV2220H420KT | 42 | 33 | 55 | ± 10% | 95 | 5.0 | 1200 | 5.0 |
QV2220H450KT | 45 | 35 | 59 | ± 10% | 100 | 5.0 | 1200 | 5.0 |
QV2220H480KT | 48 | 37 | 62 | ± 10% | 106 | 5.0 | 1200 | 5.0 |
QV2220H560KT | 56 | 40 | 72 | ± 10% | 118 | 5.0 | 1200 | 5.0 |
QV2220H600KT | 60 | 45 | 76 | ± 10% | 131 | 5.0 | 1200 | 5.0 |
QV2220H650KT | 65 | 50 | 82 | ± 10% | 142 | 5.0 | 1200 | 5.0 |
QV2220H750KT | 75 | 55 | 94 | ± 10% | 160 | 5.0 | 1200 | 5.0 |
QV2220H850KT | 85 | 60 | 100 | ± 10% | 175 | 5.0 | 1200 | 5.0 |
3) 產品(pin)包裝:
類型(xing) | 盤規格 | 載帶 | 每(mei)盤數量(pcs) |
2220 | 7" | 塑載帶 | 1K |