QV2220H系列貼片壓敏電(dian)阻介紹:
氧化(hua)(hua)鋅壓(ya)敏電阻是一種(zhong)以氧化(hua)(hua)鋅為主(zhu)體、添(tian)加多(duo)種(zhong)金屬(shu)氧化(hua)(hua)物為添(tian)加劑、經過空(kong)氣中(zhong)高溫(wen)燒結而制成的(de)多(duo)晶半(ban)導體陶瓷(ci)元件。壓(ya)敏
電(dian)阻是一(yi)種(zhong)限壓(ya)型保(bao)護器件。壓(ya)敏(min)電(dian)(dian)(dian)(dian)(dian)阻和被保(bao)護電(dian)(dian)(dian)(dian)(dian)路(lu)元件并(bing)聯在電(dian)(dian)(dian)(dian)(dian)路(lu)中(zhong),當電(dian)(dian)(dian)(dian)(dian)路(lu)中(zhong)出現雷(lei)電(dian)(dian)(dian)(dian)(dian)過(guo)(guo)電(dian)(dian)(dian)(dian)(dian)壓(ya)、靜(jing)電(dian)(dian)(dian)(dian)(dian)過(guo)(guo)電(dian)(dian)(dian)(dian)(dian)壓(ya)或瞬(shun)態操作過(guo)(guo)電(dian)(dian)(dian)(dian)(dian)壓(ya)
時,利用壓敏電(dian)阻的非線性特性,壓敏電(dian)阻會以納(na)秒級時(shi)間的響應速度(du)將兩(liang)端電(dian)壓迅速下降鉗位到(dao)一(yi)個相對(dui)固定的安全電(dian)壓值(zhi),從
而(er)避(bi)免(mian)被保(bao)護(hu)電(dian)路元件(jian)遭受過電(dian)壓的沖擊而損壞。
當施加于(yu)壓敏(min)電阻器兩(liang)端(duan)電壓小于(yu)其壓敏(min)電壓,壓敏(min)電阻器相(xiang)當于(yu)10MΩ以上絕緣電阻;當在壓敏(min)電阻器兩(liang)端(duan)施加大于(yu)壓敏(min)電壓的過
電(dian)壓(ya)時(shi),壓(ya)敏電阻器(qi)的電阻急劇下(xia)降(jiang)呈(cheng)現低阻態,從而把電荷快速(su)導走,有效地保護了電路中的其它(ta)元器(qi)件不(bu)致過壓(ya)而損(sun)壞。
多層片(pian)式壓敏電(dian)阻是(shi)貼(tie)片(pian)封裝的壓敏電(dian)阻器(qi),采用多層獨石結構,具(ju)備寄生電(dian)感小、體積小、SMT效(xiao)率高、響應時間短、工作(zuo)溫度高、
保護(hu)能力強的優勢(shi)。恭成科技QV****H系列貼片壓敏電阻應(ying)用于(yu)100V以內低電壓電路,包括(kuo)DC電源和低頻信號(hao)線(xian)進(jin)行(xing)雷擊、浪涌(yong)防護(hu),
吸收并衰(shuai)減脈(mo)沖能量,可(ke)以(yi)吸收線(xian)路內部產生的(de)(de)操作(zuo)過(guo)電(dian)壓(ya)(整(zheng)流(liu)、逆變(bian)換、變(bian)壓(ya)器產生的(de)(de)電(dian)磁脈(mo)沖和線(xian)路浪(lang)涌(yong))及衰(shuai)減后的(de)(de)雷電(dian)感
應過電(dian)(dian)壓,用(yong)作二級防(fang)護(hu)(可(ke)代替(ti)SMAJ/SMBJ的(de)TVS),同時(shi)部分應用(yong)于手(shou)機、LCD-TV/STB/電(dian)(dian)腦等的(de)通信(xin)接口進行ESD靜電(dian)(dian)防(fang)護(hu),替(ti)代
TVS使用。
QV2220H系列貼片壓敏電(dian)阻特點:
1) SMD小型貼片,節(jie)省空間,方便(bian)生產;
2) 響應(ying)時間(jian)為ns級(ji),響應(ying)速度滿(man)足(zu)各種電(dian)路保護要求;
3) 高浪(lang)(lang)涌抑制,同體積浪(lang)(lang)涌能(neng)力遠大于(yu)TVS;
4) 高溫性能穩(wen)定,125℃不(bu)降額;
5) 低(di)的漏電流IL<10μA;
6) 雙向無(wu)極(ji)性保護,鉗位電壓(ya)低;
7) 優于UL94V-0可(ke)燃性等級;
8) 符合RoHS環保標準
QV2220H系列貼片壓敏電阻應用范圍(wei):
1) 汽車電子應(ying)用:汽車的控制單元、電液(ye)制動、ABS / ESP、天窗(chuang)、車窗(chuang)控制等(deng)負載(zai)突降保護和(he)迅速啟動保護;
2) 工(gong)業(ye)儀(yi)表、控制與測(ce)量設備、安防攝像頭、電子電度表控制板;
3) 5G通訊(xun)基站、網(wang)通設備、網(wang)絡產(chan)品接口(kou)、漏電保護(hu)器控制板(ban);
4) 視(shi)頻和音頻線I / O端口、高速數據線(如HDMI、USB 3.0、IEEE 1394接(jie)口、射頻天線、射頻模塊)的ESD保(bao)護;
5) IEC 61000-4-5的(de)浪涌保護,IEC 61000-4-4的(de)EFT保護,ESD保護符合IEC 61000-4-2(4級)
QV2220H系列貼片壓(ya)敏(min)電(dian)阻(zu)性能(neng)參(can)數:
1) 結構與尺寸(cun);
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 | 片式壓敏電阻(zu)用 ZnO半(ban)導(dao)體陶(tao)瓷 | 內電極 (Ag 或(huo) Ag-Pd) | 端電(dian)極(ji) (Ag/Ni/Sn 三層) |
2) 電性能參(can)數(shu):
型號 Part No. | 最大(da)工作電壓 Max. Working Voltage | 壓敏(min)電壓 Varistor Voltage @1mA DC | 最(zui)大限位電壓(ya) 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) 產品包裝:
類型 | 盤規(gui)格 | 載(zai)帶 | 每(mei)盤數量(pcs) |
2220 | 7" | 塑載帶 | 1K |