概要
PPTC由高分子有机聚合物搀加导电的碳黑粒子组成。PPTC正常温度下为低阻抗,当有过电流通过或环境温度高于动作温度时,其内部导电链断开,阻抗迅速上升,呈高阻抗状态;当过电流消失或温度降低后,导电链再度结合,***为低阻抗。应用时表现为通过高阻限流作用,对***性的电流过载冲击进行***。

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自******丝-Electrical characteristics(25℃)
|
| Model |
lhold |
ltrip |
Vmax |
Vmax |
lmax |
Pd |
Maximum Time To Trip |
Resistance |
| |
OP |
lnterrupt |
|
Typ |
Current |
Time |
Rmin |
Rmax |
R1max |
| (mA) |
(mA) |
Vdc |
Vrms |
(A) |
(W) |
(A) |
(S) |
(Ω) |
(Ω) |
(Ω) |
| JK250-020U |
20 |
45 |
60 |
250 |
3.0 |
1.0 |
1.0 |
0.1 |
80 |
160 |
240 |
| JK250-030U |
30 |
65 |
60 |
250 |
3.0 |
1.0 |
1.0 |
0.1 |
60 |
120 |
180 |
| JK250-040U |
40 |
80 |
60 |
250 |
3.0 |
1.0 |
0.5 |
1 |
30 |
60 |
80 |
| JK250-060U |
60 |
120 |
60 |
250 |
3.0 |
1.0 |
0.5 |
2 |
22 |
40 |
60 |
| JK250-080U |
80 |
160 |
60 |
250 |
3.0 |
1.0 |
1 |
0.25 |
14 |
22 |
33 |
| JK250-090U |
90 |
180 |
60 |
250 |
3.0 |
1.0 |
1 |
0.5 |
10 |
20 |
31 |
| JK250-100U |
100 |
200 |
60 |
250 |
3.0 |
1.0 |
1 |
1 |
10 |
20 |
31 |
| JK250-110U |
110 |
220 |
60 |
250 |
3.0 |
1.0 |
1 |
1.2 |
6 |
12 |
16 |
| JK250-120 |
120 |
240 |
60 |
250 |
3.0 |
1.0 |
1 |
1.2 |
5 |
10 |
14 |
| JK250-120U |
120 |
240 |
60 |
250 |
3.0 |
1.0 |
1 |
1.2 |
6 |
11 |
16 |
| JK250-145U |
145 |
290 |
60 |
250 |
3.0 |
1.0 |
1 |
4 |
3.5 |
6.5 |
14 |
| JK250-180T |
180 |
540 |
60 |
250 |
10.0 |
1.8 |
3 |
1.5 |
1.0 |
2.2 |
4 |
| JK250-180U |
180 |
540 |
60 |
250 |
10.0 |
1.8 |
3 |
1.5 |
1 |
3 |
5 |
| JK250-200U |
200 |
400 |
60 |
250 |
10.0 |
2.4 |
3 |
5 |
3 |
6 |
9 |
| JK250-400U |
400 |
800 |
60 |
250 |
10.0 |
2.8 |
3 |
8 |
1 |
3 |
6 |
| JK250-600U |
600 |
1200 |
60 |
250 |
10.0 |
3.2 |
3 |
12 |
0.6 |
2.0 |
5 |
| JK250-800U |
800 |
1600 |
60 |
250 |
10.0 |
3.6 |
4 |
18 |
0.4 |
1.0 |
3 |
| JK250-1000U |
1000 |
2000 |
60 |
250 |
10.0 |
3.6 |
5 |
20 |
0.5 |
0.8 |
2 |
| JK250-1200U |
1200 |
2400 |
60 |
250 |
10.0 |
3.6 |
6 |
20 |
0.2 |
0.8 |
2 |
| JK250-1500U |
1500 |
3000 |
60 |
250 |
10.0 |
4.8 |
7.5 |
20 |
0.2 |
0.6 |
1.5 |
| JK250-2000U |
2000 |
4000 |
60 |
250 |
10.0 |
4.8 |
10 |
20 |
0.2 |
0.4 |
1.5 |
|
| |
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保持电流(I H):25℃静止空气环境中不触发PPTC自******丝突越的***高电流。
|
| 触发电流(I T):25℃静止空气环境中PPTC自******丝从低阻抗转为高阻抗的***小电流。 |
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***大电压(V max):PPTC自******丝能承受的***大工作电压。
|
| ***大电流(I max):P35倍PTC自******丝能承受的***大电流。 |
| 动作时间(T trip):指定电流下的***大动作时间。 |
| 动作功率(Pd typ):25℃环境温度时PPTC自******丝动作状态下的消耗功率。 |
| ***小电阻(R min):25℃ 温度条件下***小零功率电阻。 |
| ***大电阻(R max):25℃ 温度条件下***大零功率电阻。 |