QV2220H系列貼片(pian)壓敏電(dian)阻介紹:
氧化(hua)鋅壓(ya)敏(min)電阻是(shi)一種以氧化(hua)鋅為(wei)主體(ti)、添加多(duo)種金屬氧化(hua)物為(wei)添加劑(ji)、經過空氣中高(gao)溫(wen)燒結而制成的多(duo)晶半(ban)導體(ti)陶瓷元件。壓(ya)敏(min)
電阻是一種限(xian)壓(ya)(ya)型(xing)保護器件。壓(ya)(ya)敏電(dian)(dian)(dian)阻和被保護電(dian)(dian)(dian)路元件并聯在電(dian)(dian)(dian)路中(zhong),當電(dian)(dian)(dian)路中(zhong)出現雷電(dian)(dian)(dian)過電(dian)(dian)(dian)壓(ya)(ya)、靜電(dian)(dian)(dian)過電(dian)(dian)(dian)壓(ya)(ya)或瞬態操作過電(dian)(dian)(dian)壓(ya)(ya)
時(shi),利用(yong)壓(ya)(ya)敏電(dian)阻的非線性特性,壓(ya)(ya)敏電(dian)阻會以納秒級時間(jian)的響應速度(du)將兩端(duan)電(dian)壓(ya)(ya)迅速下降鉗位(wei)到(dao)一個相對固(gu)定(ding)的安全電(dian)壓(ya)(ya)值,從
而避免被保護電路元件(jian)遭受過(guo)電壓的沖擊而損(sun)壞。
當(dang)施加于(yu)(yu)壓(ya)(ya)敏(min)(min)電阻器兩端電壓(ya)(ya)小于(yu)(yu)其壓(ya)(ya)敏(min)(min)電壓(ya)(ya),壓(ya)(ya)敏(min)(min)電阻器相當(dang)于(yu)(yu)10MΩ以上絕緣電阻;當(dang)在壓(ya)(ya)敏(min)(min)電阻器兩端施加大(da)于(yu)(yu)壓(ya)(ya)敏(min)(min)電壓(ya)(ya)的過
電(dian)壓時,壓敏電阻(zu)器的(de)電阻(zu)急劇下降呈現低阻(zu)態,從而(er)把電荷快速導走,有效地保護(hu)了電路中(zhong)的(de)其它(ta)元(yuan)器件不致過壓而(er)損壞(huai)。
多層片(pian)(pian)式(shi)壓敏(min)電阻是貼片(pian)(pian)封裝的壓敏(min)電阻器,采(cai)用多層獨石結構,具備寄生電感小、體(ti)積小、SMT效率高(gao)、響應時間(jian)短、工作溫(wen)度(du)高(gao)、
保護能力強的優勢。恭(gong)成科技QV****H系列貼片壓(ya)敏電阻應(ying)用于100V以內(nei)低電壓(ya)電路,包括(kuo)DC電源(yuan)和低頻信號(hao)線進(jin)行雷擊、浪涌防護,
吸收(shou)并衰減脈(mo)沖能量,可(ke)以吸收(shou)線(xian)路(lu)內部產生的(de)操(cao)作過電(dian)(dian)壓(整流、逆變換、變壓器產生的(de)電(dian)(dian)磁脈(mo)沖和線(xian)路(lu)浪(lang)涌)及衰減后的(de)雷電(dian)(dian)感
應過電壓,用(yong)作二級防護(可代替(ti)SMAJ/SMBJ的TVS),同時部分應用(yong)于(yu)手機、LCD-TV/STB/電腦等的通信接口進行ESD靜(jing)電防護,替(ti)代
TVS使用。
QV2220H系列貼片壓敏電(dian)阻特(te)點(dian):
1) SMD小型貼(tie)片,節省空間(jian),方便生(sheng)產(chan);
2) 響應(ying)時間為ns級,響應(ying)速(su)度滿足各種(zhong)電(dian)路(lu)保護要(yao)求;
3) 高(gao)浪涌(yong)抑制(zhi),同體積浪涌(yong)能力遠大(da)于TVS;
4) 高溫性(xing)能穩定,125℃不降額;
5) 低(di)的漏電(dian)流IL<10μA;
6) 雙向無極性保(bao)護,鉗位電(dian)壓(ya)低;
7) 優于UL94V-0可(ke)燃(ran)性等級;
8) 符合RoHS環(huan)保(bao)標準(zhun)
QV2220H系列貼片壓敏電阻應用范圍:
1) 汽車電子應(ying)用:汽車的(de)控制單元、電液制動、ABS / ESP、天(tian)窗、車窗控制等(deng)負載突(tu)降保(bao)(bao)護和迅速(su)啟動保(bao)(bao)護;
2) 工業儀表、控制(zhi)與測量(liang)設備(bei)、安防(fang)攝像(xiang)頭、電子電度表控制(zhi)板;
3) 5G通(tong)(tong)訊基站(zhan)、網通(tong)(tong)設備、網絡產品(pin)接口、漏電(dian)保(bao)護器控制(zhi)板;
4) 視頻(pin)(pin)和音(yin)頻(pin)(pin)線(xian)I / O端(duan)口(kou)、高速數據線(xian)(如(ru)HDMI、USB 3.0、IEEE 1394接口(kou)、射(she)頻(pin)(pin)天線(xian)、射(she)頻(pin)(pin)模塊)的ESD保護(hu);
5) IEC 61000-4-5的浪涌保護,IEC 61000-4-4的EFT保護,ESD保護符合IEC 61000-4-2(4級)
QV2220H系列貼片(pian)壓敏電阻性能參數:
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(bu)分 | ① | ② | ③ |
組成(cheng) | 片式壓敏電阻用(yong) ZnO半導(dao)體陶瓷 | 內電極 (Ag 或 Ag-Pd) | 端電極(ji) (Ag/Ni/Sn 三層) |
2) 電性(xing)能參數:
型號(hao) Part No. | 最大(da)工作電(dian)壓 Max. Working Voltage | 壓敏電壓 Varistor Voltage @1mA DC | 最大限位(wei)電壓 Max. Clamping Voltage (8/20μs) | 峰值電流 Peak Current (8/20μs) | 能量耐量 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(lei)型 | 盤規格 | 載(zai)帶 | 每盤(pan)數量(pcs) |
2220 | 7" | 塑載帶(dai) | 1K |