PPTC自恢复保险丝
首页 > PPTC自恢复保险丝
PPTC自恢复保险丝
|
一、PPTC的简介 自恢复保险丝，简称PPTC.是一种正温度系数聚合物热敏电阻，作过流保护用，可代替电流保险丝。电路正常工作时它的阻值很小(压降很小)，当电路出现过流使它温度升高时，阻值急剧增大几个数量级，使电路中的电流减小到安全值以下，从而使后面的电路得到保护，过流消失后自动恢复为低阻值。其效果与开关组件类似，只是响应速度较慢。 二、PPTC的选用技巧 ●正常工作电流- IHOLD ●电路电压最大值- VMAX ●最大中断电流- IMAX ●工作环境温度 2.选择合适的封装形式:贴片PTC或者插件PTC。 3.比较的VMAX和IMAX的PTC数据表中的评级，以确保电路参数不超过这些额定值。 4.验证PTC的运行环境温度为它的正常工作范围内。确定Ihold和IMAX的温度曲线。 |
| Part Number |
Ih(A)
|
Vmax(Vdc)
|
Imax(A)
|
Trip current(A)
|
Trip time(s)
|
Rmax(Ω)
|
Rmin(Ω)
|
Pdtyp(W)
|
It(A)
|
Package
|
Inner Diagram | Data sheet |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HL600-160 | 0.16 | 600 | 3 | 1 | 10 | 12 | 4.1 | 1 | 0.32 | DIP |
 |
|
| SMD0805P005TF | 0.05 | 24 | 100 | 0.15 | 1.5 | 20 | 1.5 | 0.5 | 0.15 | 0805 |
 |
|
| SMD0805P010TF | 0.1 | 15 | 100 | 0.3 | 1.5 | 6 | 1 | 0.5 | 0.3 | 0805 |
 |
|
| SMD0805P020TF | 0.2 | 9 | 100 | 0.5 | 0.02 | 3.5 | 0.5 | 0.5 | 0.5 | 0805 |
 |
|
| SMD0805P025TF | 0.25 | 6 | 100 | 0.5 | 0.02 | 3.2 | 0.45 | 0.5 | 0.5 | 0805 |
 |
|
| SMD0805P030TF | 0.3 | 6 | 100 | 0.7 | 0.1 | 2 | 0.25 | 0.5 | 0.7 | 0805 |
 |
|
| SMD0805P035TF | 0.35 | 6 | 100 | 0.75 | 0.1 | 1.2 | 0.25 | 0.5 | 0.75 | 0805 |
 |
|
| SMD0805P050TF | 0.5 | 6 | 100 | 1 | 0.1 | 0.85 | 0.15 | 0.6 | 1 | 0805 |
 |
|
| SMD0805P075TF | 0.75 | 6 | 100 | 1.5 | 0.2 | 0.385 | 0.09 | 0.6 | 1.5 | 0805 |
 |
|
| SMD0805P100TF | 1 | 6 | 100 | 1.95 | 0.3 | 0.23 | 0.06 | 0.6 | 1.95 | 0805 |
 |
|
| SMD0805P110TF | 1.1 | 6 | 100 | 2.2 | 0.3 | 0.21 | 0.06 | 0.6 | 2.2 | 0805 |
 |
|
| SMD1812P010TF | 0.1 | 30 | 100 | 0.5 | 1.5 | 15 | 0.75 | 0.8 | 0.3 | 1812 |
 |
|
| SMD1812P010TF/60 | 0.1 | 60 | 100 | 0.5 | 1.5 | 15 | 0.75 | 0.8 | 0.3 | 1812 |
 |
|
| SMD1812P014TF | 0.14 | 60 | 100 | 1.5 | 0.15 | 6 | 0.65 | 0.8 | 0.34 | 1812 |
 |
|
| SMD1812P014TF/33 | 0.14 | 33 | 100 | 1.5 | 0.15 | 6 | 0.65 | 0.8 | 0.34 | 1812 |
 |
|
| SMD1812P020TF | 0.2 | 30 | 100 | 8 | 0.02 | 5 | 0.35 | 0.8 | 0.4 | 1812 |
 |
|
| SMD1812P030TF | 0.3 | 30 | 100 | 8 | 0.1 | 3 | 0.25 | 0.8 | 0.6 | 1812 |
 |
|
| SMD1812P050TF | 0.5 | 15 | 100 | 8 | 0.15 | 1 | 0.15 | 0.8 | 1 | 1812 |
 |
|
| SMD1812P050TF/24 | 0.5 | 24 | 100 | 8 | 0.15 | 1 | 0.15 | 0.8 | 1 | 1812 |
 |
|
| SMD1812P050TF/30 | 0.5 | 30 | 100 | 8 | 0.15 | 1 | 0.15 | 0.8 | 1 | 1812 |
 |
|
| SMD1812P075TF | 0.75 | 13.2 | 100 | 8 | 0.2 | 0.45 | 0.09 | 0.8 | 1.5 | 1812 |
 |
|
| SMD1812P075TF/24 | 0.75 | 24 | 100 | 8 | 0.2 | 0.45 | 0.09 | 0.8 | 1.5 | 1812 |
 |
|
| SMD1812P075TF/33 | 0.75 | 33 | 100 | 8 | 0.2 | 0.45 | 0.09 | 0.8 | 1.5 | 1812 |
 |
|
| SMD1812P110TF/8 | 1.1 | 8 | 100 | 8 | 0.3 | 0.25 | 0.05 | 0.8 | 2.2 | 1812 |
 |
|
| SMD1812P110TF/16 | 1.1 | 16 | 100 | 8 | 0.3 | 0.25 | 0.05 | 0.8 | 2.2 | 1812 |
 |
|
| SMD1812P110TF/24 | 1.1 | 24 | 100 | 8 | 0.3 | 0.25 | 0.05 | 0.8 | 2.2 | 1812 |
 |
|
| SMD1812P110TF/33Q | 1.1 | 33 | 100 | 8 | 0.3 | 0.25 | 0.05 | 0.8 | 2.2 | 1812 |
 |
|
| SMD1812P125TF | 1.25 | 8 | 100 | 8 | 0.4 | 0.14 | 0.05 | 0.8 | 2.5 | 1812 |
 |
|
| SMD1812P125TF/16 | 1.25 | 16 | 100 | 8 | 0.4 | 0.14 | 0.05 | 0.8 | 2.5 | 1812 |
 |
|
| SMD1812P150TF | 1.5 | 8 | 100 | 8 | 0.5 | 0.16 | 0.04 | 0.8 | 3 | 1812 |
 |
