0402系列NTC貼(tie)片熱敏電阻介紹:
NTC熱(re)敏電阻是一(yi)種由錳(meng)、鈷、鎳為(wei)主多(duo)種金屬氧化物為(wei)原料燒(shao)結(jie)而(er)成的陶瓷半導體感(gan)熱(re)晶(jing)體,對溫度(du)變化的敏感(gan)度(du)極高,其零(ling)功率(lv)
電(dian)阻值隨著本體(ti)溫(wen)(wen)度(du)升高(gao)而降(jiang)低(di),隨著溫(wen)(wen)度(du)的升高(gao)電(dian)阻值呈指數(shu)關系下降(jiang),溫(wen)(wen)度(du)系數(shu)高(gao)達(3~6%/℃),微小的溫(wen)(wen)度(du)變化會引起很大
的(de)(de)電(dian)(dian)(dian)阻(zu)值(zhi)變化。根(gen)據熱敏電(dian)(dian)(dian)阻(zu)的(de)(de)R-T阻(zu)值(zhi)溫度(du)曲(qu)線,可(ke)以(yi)測算(suan)出每(mei)一個(ge)溫度(du)點精確的(de)(de)電(dian)(dian)(dian)阻(zu)值(zhi),在電(dian)(dian)(dian)路(lu)中(zhong)就(jiu)可(ke)以(yi)通過(guo)電(dian)(dian)(dian)阻(zu)值(zhi)來實(shi)現溫度(du)的(de)(de)
數字化(hua)對(dui)應,用來進行(xing)溫度的測量和控制。
NTC熱(re)敏(min)(min)電阻因(yin)為其對溫度(du)的靈敏(min)(min)度(du)高、可靠性好、互換性強、廉價、體積(ji)小、容易加工成各種所需的形狀(zhuang)和尺寸(cun)等優勢廣(guang)泛地應用
在(zai)家電(dian)、數碼通(tong)訊、汽(qi)車(che)、工業、醫療(liao)等(deng)領域內,其主要功能是溫(wen)度檢測(ce)及控制、溫(wen)度補(bu)償(chang)、抑制浪涌電(dian)流、流體流量測(ce)試等(deng)作用。
0402系列NTC貼片熱敏電阻特點:
1) 體積小,無引線(xian),焊接(jie)性能優良,適合高密(mi)度表面(mian)貼裝;
2) 瓷體表面采(cai)用(yong)玻(bo)璃包封,耐(nai)潮濕性能(neng)好,可靠性與穩定(ding)性高;
3) 工作溫度范(fan)圍(wei)廣:-40℃~+125℃;
4) 高精(jing)度的電阻值(zhi)和(he)B值(zhi)常(chang)數(shu);
5) 符合(he)RoHS環保標(biao)準
0402系列NTC貼片熱敏電阻應用范圍:
溫(wen)度(du)測量:電(dian)(dian)子溫(wen)度(du)計(ji)、電(dian)(dian)子萬(wan)年(nian)歷、電(dian)(dian)子鐘(zhong)溫(wen)度(du)顯示、電(dian)(dian)子禮品等;
溫度(du)(du)控(kong)制:手機、汽車(che)電(dian)(dian)話(hua)、筆記(ji)本電(dian)(dian)腦(nao)、智能穿戴設備(bei)等設備(bei)充電(dian)(dian)電(dian)(dian)池的溫度(du)(du)傳感(gan);
溫(wen)度補(bu)償:移動通信(xin)設備的(de)晶體管、IC和晶體振蕩(dang)器的(de)溫(wen)度補(bu)償。
0402系列NTC貼片熱敏電阻性能參數:
型(xing)號 | 電阻值(25℃) (kΩ) | B常數(25/50℃)(K) | B常數(25/85℃)(K) | 允許工作電流(25℃)(mA) | 耗(hao)散系(xi)數 (mW/℃) | 熱(re)時間(jian)常數 (s) |
QN0402X102F3450FB | 1.0 | 3450±1% | 3500 | 1.00 | 1.0 | <3 |
QN0402X152F3950FB | 1.5 | 3950±1% | 3987 | 0.81 | ||
QN0402X222F3450FB | 2.2 | 3450±1% | 3500 | 0.67 | ||
QN0402X222F3950FB | 2.2 | 3950±1% | 3987 | 0.67 | ||
QN0402X332F3450FB | 3.3 | 3450±1% | 3500 | 0.55 | ||
QN0402X332F3950FB | 3.3 | 3950±1% | 3987 | 0.55 | ||
QN0402X472F3500FB | 4.7 | 3500±1% | 3545 | 0.46 | ||
QN0402X472F3950FB | 4.7 | 3950±1% | 3987 | 0.46 | ||
QN0402X682F3500FB | 6.8 | 3500±1% | 3545 | 0.38 | ||
QN0402X682F3950FB | 6.8 | 3950±1% | 3987 | 0.38 | ||
QN0402X103F3380FB | 10 | 3380±1% | 3435 | 0.31 | ||
QN0402X103F3900FB | 10 | 3900±1% | 3935 | 0.31 | ||
QN0402X153F3950FB | 15 | 3950±1% | 3987 | 0.25 | ||
QN0402X223F3950FB | 22 | 3950±1% | 3987 | 0.21 | ||
QN0402X333F4050FB | 33 | 4050±1% | 4100 | 0.17 | ||
QN0402X473F4050FB | 47 | 4050±1% | 4100 | 0.14 | ||
QN0402X473F4485FB | 47 | 4485±1% | 4545 | 0.14 | ||
QN0402X493F3937FB | 49.1 | 3937±1% | 3973 | 0.13 | ||
QN0402X503F4100FA | 50 | 4050 | 4100±1% | 0.13 | ||
QN0402X683F4150FB | 68 | 4150±1% | 4210 | 0.12 | ||
QN0402X683F4485FB | 68 | 4485±1% | 4545 | 0.12 | ||
QN0402X104F4250FB | 100 | 4250±1% | 4310 | 0.10 | ||
QN0402X104F4360FB | 100 | 4360±1% | 4403 | 0.10 | ||
QN0402X104F4485FB | 100 | 4485±1% | 4545 | 0.10 | ||
QN0402X154F4500FB | 150 | 4500±1% | 4582 | 0.08 | ||
QN0402X224F3950FB | 220 | 3950±1% | 3987 | 0.06 | ||
QN0402X224F4250FB | 220 | 4250±1% | 4310 | 0.06 | ||
QN0402X224F4500FB | 220 | 4500±1% | 4582 | 0.06 | ||
QN0402X334F3950FB | 330 | 3950±1% | 3987 | 0.05 | ||
QN0402X334F4500FB | 330 | 4500±1% | 4582 | 0.05 | 1.0 | <3 |
QN0402X474F4000FB | 470 | 4000±1% | 4045 | 0.04 | ||
QN0402X474F4500FB | 470 | 4500±1% | 4582 | 0.04 | ||
QN0402X684F4100FB | 680 | 4100±1% | 4135 | 0.03 | ||
QN0402X684F4500FB | 680 | 4500±1% | 4582 | 0.03 |