QV1812H系列貼片壓(ya)敏電阻介紹(shao):
氧化鋅(xin)壓(ya)敏電阻是一種以氧化鋅(xin)為(wei)主(zhu)體(ti)、添(tian)加(jia)(jia)多種金屬氧化物為(wei)添(tian)加(jia)(jia)劑、經過空氣(qi)中高(gao)溫燒結(jie)而制成的(de)多晶半導體(ti)陶(tao)瓷元件。壓(ya)敏
電阻是一種限壓(ya)型保(bao)護器件。壓(ya)敏(min)電(dian)(dian)(dian)(dian)阻和被保(bao)護電(dian)(dian)(dian)(dian)路元件并聯(lian)在(zai)電(dian)(dian)(dian)(dian)路中,當(dang)電(dian)(dian)(dian)(dian)路中出現雷電(dian)(dian)(dian)(dian)過(guo)(guo)電(dian)(dian)(dian)(dian)壓(ya)、靜電(dian)(dian)(dian)(dian)過(guo)(guo)電(dian)(dian)(dian)(dian)壓(ya)或瞬(shun)態操作過(guo)(guo)電(dian)(dian)(dian)(dian)壓(ya)
時,利用壓(ya)敏電(dian)(dian)阻的非線性特性,壓(ya)敏電(dian)(dian)阻會(hui)以納秒級(ji)時(shi)間的響(xiang)應速度將兩(liang)端電(dian)(dian)壓(ya)迅速下降鉗位到一(yi)個相對(dui)固定的安全電(dian)(dian)壓(ya)值(zhi),從
而避(bi)免(mian)被(bei)保護電(dian)(dian)路(lu)元件遭受過電(dian)(dian)壓的沖擊而(er)損壞。
當施加于壓(ya)敏(min)電(dian)(dian)(dian)阻器(qi)兩端(duan)(duan)電(dian)(dian)(dian)壓(ya)小于其壓(ya)敏(min)電(dian)(dian)(dian)壓(ya),壓(ya)敏(min)電(dian)(dian)(dian)阻器(qi)相當于10MΩ以(yi)上絕緣電(dian)(dian)(dian)阻;當在(zai)壓(ya)敏(min)電(dian)(dian)(dian)阻器(qi)兩端(duan)(duan)施加大于壓(ya)敏(min)電(dian)(dian)(dian)壓(ya)的過
電壓時,壓敏電(dian)(dian)阻器的電(dian)(dian)阻急劇下降呈現低阻態,從而把電(dian)(dian)荷(he)快速(su)導走,有效地保護了電(dian)(dian)路中(zhong)的其它元器件不致過壓而損壞。
多(duo)層片式壓敏(min)電阻(zu)(zu)是(shi)貼片封裝的壓敏(min)電阻(zu)(zu)器,采用(yong)多(duo)層獨石結構,具備寄生電感小、體(ti)(ti)積小、SMT效率高、響應(ying)時間短(duan)、工作溫度高、
保護能(neng)力(li)強的優勢。恭成科(ke)技QV****H系列貼(tie)片壓(ya)敏電阻應用于100V以內低(di)電壓(ya)電路,包括(kuo)DC電源和低(di)頻(pin)信號線進行雷擊、浪(lang)涌防護,
吸(xi)收并(bing)衰(shuai)減脈沖能量,可以吸(xi)收線(xian)路(lu)內部產(chan)(chan)生的(de)(de)操作過電(dian)壓(整流、逆變換(huan)、變壓器產(chan)(chan)生的(de)(de)電(dian)磁脈沖和線(xian)路(lu)浪涌)及衰(shuai)減后的(de)(de)雷電(dian)感
應過電壓(ya),用作二(er)級防護(可代替SMAJ/SMBJ的TVS),同時部(bu)分(fen)應用于手機、LCD-TV/STB/電腦等的通(tong)信接(jie)口(kou)進行ESD靜電防護,替代
TVS使用。
QV1812H系列貼片壓敏電阻特點:
1) SMD小型貼(tie)片,節省空(kong)間,方(fang)便(bian)生產;
2) 響(xiang)應時間(jian)為ns級,響(xiang)應速度滿足各種電路保護(hu)要求(qiu);
3) 高浪(lang)涌抑制,同體積浪(lang)涌能(neng)力遠(yuan)大(da)于TVS;
4) 高溫性能(neng)穩定(ding),125℃不降額;
5) 低(di)的漏電流IL<10μA;
6) 雙(shuang)向無極性保護,鉗(qian)位電壓低;
7) 優于(yu)UL94V-0可燃性等級(ji);
8) 符(fu)合RoHS環保標準
QV1812H系列貼片壓敏(min)電阻應用范(fan)圍:
1) 汽車電子應用:汽車的控制(zhi)單元、電液制(zhi)動(dong)、ABS / ESP、天窗、車窗控制(zhi)等負(fu)載突降保護和迅速啟動(dong)保護;
2) 工業(ye)儀表、控制(zhi)與測量(liang)設備(bei)、安(an)防攝像頭、電(dian)子電(dian)度表控制(zhi)板;
3) 5G通訊基站(zhan)、網通設備、網絡產品接口、漏電保護器控制板;
4) 視頻(pin)(pin)和(he)音頻(pin)(pin)線(xian)I / O端口、高速數據(ju)線(xian)(如(ru)HDMI、USB 3.0、IEEE 1394接口、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(de)浪涌保(bao)護,IEC 61000-4-4的(de)EFT保(bao)護,ESD保(bao)護符合IEC 61000-4-2(4級)
QV1812H系(xi)列貼(tie)片壓敏電阻(zu)性能參數:
1) 結(jie)構與尺(chi)寸;
類型(xing) | L(mm) | W(mm) | T(mm) | a(mm) |
1812 | 4.5±0.4 | 3.2±0.3 | 2.0 Max. | 0.25~1.0 |
部分 | ① | ② | ③ |
組成 | 片式壓敏電阻用 ZnO半導體陶瓷 | 內電(dian)極 (Ag 或(huo) Ag-Pd) | 端電極 (Ag/Ni/Sn 三層) |
2) 電性(xing)能參數(shu):
型(xing)號 Part No. | 最大工(gong)作電壓 Max. Working Voltage | 壓敏電壓 Varistor Voltage @1mA DC | 最大(da)限(xian)位電壓(ya) Max. Clamping Voltage (8/20μs) | 峰值(zhi)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) | |
QV1812H090LT | 9 | 7 | 13 | ± 15% | 24 | 5.0 | 800 | 2.5 |
QV1812H120LT | 12 | 9 | 18 | ± 15% | 30 | 5.0 | 800 | 2.5 |
QV1812H140KT | 14 | 11 | 20 | ± 10% | 34 | 5.0 | 800 | 2.5 |
QV1812H180KT | 18 | 14 | 25 | ± 10% | 42 | 5.0 | 800 | 3.0 |
QV1812H220KT | 22 | 17 | 30 | ± 10% | 50 | 5.0 | 800 | 3.0 |
QV1812H260KT | 26 | 20 | 36 | ± 10% | 60 | 5.0 | 800 | 3.0 |
QV1812H300KT | 30 | 25 | 41 | ± 10% | 70 | 5.0 | 800 | 3.5 |
QV1812H330KT | 33 | 26 | 44 | ± 10% | 75 | 5.0 | 800 | 3.5 |
QV1812H380KT | 38 | 30 | 50 | ± 10% | 85 | 5.0 | 800 | 3.5 |
QV1812H420KT | 42 | 33 | 55 | ± 10% | 95 | 5.0 | 800 | 3.5 |
QV1812H450KT | 45 | 35 | 59 | ± 10% | 100 | 5.0 | 800 | 3.5 |
QV1812H480KT | 48 | 37 | 62 | ± 10% | 106 | 5.0 | 800 | 3.5 |
QV1812H560KT | 56 | 40 | 72 | ± 10% | 118 | 5.0 | 800 | 3.5 |
QV1812H600KT | 60 | 45 | 76 | ± 10% | 131 | 5.0 | 800 | 3.5 |
QV1812H650KT | 65 | 50 | 82 | ± 10% | 142 | 5.0 | 800 | 3.5 |
QV1812H750KT | 75 | 55 | 94 | ± 10% | 160 | 5.0 | 800 | 3.5 |
QV1812H850KT | 85 | 60 | 100 | ± 10% | 175 | 5.0 | 800 | 3.5 |
3) 產品包裝(zhuang):
類(lei)型 | 盤規格 | 載帶 | 每盤數量(pcs) |
1812 | 7" | 塑載帶 | 1K |