0402系列NTC貼片熱敏電阻介紹:
NTC熱敏電阻是一種由錳、鈷、鎳為主多種金屬氧化物為原料燒結(jié)而成的陶瓷半導(dǎo)體感熱晶體,對(duì)溫度變化的敏感度極高,其零功率電阻值隨著本體溫度升高而降低,隨著溫度的升高電阻值呈指數(shù)關(guān)系下降,溫度系數(shù)高達(dá)(3~6%/℃),微小的溫度變化會(huì)引起很大?的電阻值變化。根據(jù)熱敏電阻的R-T阻值溫度曲線,可以測(cè)算出每一個(gè)溫度點(diǎn)精確的電阻值,在電路中就可以通過電阻值來實(shí)現(xiàn)溫度的數(shù)字化對(duì)應(yīng),用來進(jìn)行溫度的測(cè)量和控制。
0402系列NTC貼片熱敏電阻特點(diǎn):
1)?體積小,無引線,焊接性能優(yōu)良,適合高密度表面貼裝;
2)?瓷體表面采用玻璃包封,耐潮濕性能好,可靠性與穩(wěn)定性高;
3)?工作溫度范圍廣:-40℃~+125℃;
4)?高精度的電阻值和B值常數(shù);
5)?符合RoHS環(huán)保標(biāo)準(zhǔn)
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0402系列NTC貼片熱敏電阻應(yīng)用范圍:
溫度測(cè)量:電子溫度計(jì)、電子萬年歷、電子鐘溫度顯示、電子禮品等;
溫度控制:手機(jī)、汽車電話、筆記本電腦、智能穿戴設(shè)備等設(shè)備充電電池的溫度傳感;
溫度補(bǔ)償:移動(dòng)通信設(shè)備的晶體管、IC和晶體振蕩器的溫度補(bǔ)償。
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0402系列NTC貼片熱敏電阻性能參數(shù):
型號(hào) |
電阻值(25℃) (kΩ) |
B常數(shù)(25/50℃)(K) |
B常數(shù)(25/85℃)(K) |
允許工作電流(25℃)(mA) |
耗散系數(shù)?(mW/℃) |
熱時(shí)間常數(shù)?(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 |