PPTC自恢复保险丝
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PPTC自恢复保险丝
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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)
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Vmax(Vdc)
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Imax(A)
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Trip current(A)
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Trip time(s)
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Rmax(Ω)
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Rmin(Ω)
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Pdtyp(W)
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It(A)
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Package
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Inner Diagram | Data sheet |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HL130-017 | 0.17 | 130 | 3 | 0.85 | 5.2 | 7 | 1.5 | 0.8 | 0.34 | DIP |
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| HL130-020 | 0.2 | 130 | 3 | 1 | 5 | 4 | 1.9 | 0.8 | 0.4 | DIP |
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| HL130-025 | 0.25 | 130 | 3 | 1.25 | 4.8 | 3.5 | 1.45 | 1 | 0.5 | DIP |
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| HL130-030 | 0.3 | 130 | 3 | 1.5 | 4.5 | 3 | 1 | 1 | 0.6 | DIP |
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| HL130-040 | 0.4 | 130 | 3 | 2 | 4.5 | 2 | 0.75 | 1 | 0.8 | DIP |
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| HL130-050 | 0.5 | 130 | 3 | 2.5 | 5 | 1.6 | 0.5 | 1 | 1 | DIP |
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| HL130-065 | 0.65 | 130 | 10 | 3.25 | 5.2 | 1 | 0.45 | 1 | 1.3 | DIP |
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| HL130-075 | 0.75 | 130 | 10 | 3.75 | 5.5 | 0.9 | 0.4 | 1 | 1.5 | DIP |
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| HL130-090 | 0.9 | 130 | 10 | 4.5 | 5.8 | 0.7 | 0.3 | 1.5 | 1.8 | DIP |
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| HL130-110 | 1.1 | 130 | 10 | 5.5 | 6.3 | 0.65 | 0.2 | 1.8 | 2.2 | DIP |
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| HL130-135 | 1.35 | 130 | 10 | 6.75 | 7.5 | 0.6 | 0.15 | 1.8 | 2.7 | DIP |
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| HL130-160 | 1.6 | 130 | 10 | 8 | 8 | 0.5 | 0.1 | 2 | 3.2 | DIP |
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| HL130-185 | 1.85 | 130 | 10 | 9.25 | 9 | 0.4 | 0.1 | 2 | 3.7 | DIP |
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| HL130-200 | 2 | 130 | 10 | 10 | 10 | 0.3 | 0.1 | 2.2 | 4 | DIP |
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| HL130-250 | 2.5 | 130 | 10 | 12.5 | 12 | 0.25 | 0.05 | 2.5 | 5 | DIP |
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| HL250-020 | 0.02 | 250 | 3 | 0.5 | 0.5 | 160 | 80 | 1 | 0.045 | DIP |
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| HL250-030 | 0.03 | 250 | 1 | 0.5 | 0.5 | 120 | 60 | 1 | 0.065 | DIP |
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| HL250-040 | 0.04 | 250 | 3 | 0.5 | 1.5 | 60 | 30 | 1 | 0.08 | DIP |
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| HL250-050 | 0.05 | 250 | 3 | 0.5 | 2 | 50 | 25 | 1 | 0.1 | DIP |
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| HL250-060 | 0.06 | 250 | 3 | 0.5 | 2 | 60 | 20 | 1 | 0.12 | DIP |
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| HL250-080 | 0.08 | 250 | 3 | 1 | 0.5 | 22 | 12 | 1 | 0.16 | DIP |
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| HL250-090 | 0.09 | 250 | 3 | 1 | 0.8 | 20 | 10 | 1 | 0.18 | DIP |
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| HL250-100 | 0.1 | 250 | 3 | 1 | 1 | 20 | 10 | 1 | 0.2 | DIP |
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| HL250-110 | 0.11 | 250 | 3 | 1 | 2 | 12 | 6 | 1 | 0.22 | DIP |
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| HL250-120 | 0.12 | 250 | 3 | 1 | 2 | 11 | 6 | 1 | 0.24 | DIP |
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| HL250-145 | 0.145 | 250 | 3 | 1 | 5 | 6.5 | 3.5 | 1 | 0.29 | DIP |
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| HL250-180 | 0.18 | 250 | 3 | 3 | 3 | 2.2 | 1 | 1.8 | 0.65 | DIP |
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| HL250-200 | 0.2 | 250 | 5 | 3 | 5 | 6 | 3 | 2.4 | 0.4 | DIP |
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| HL250-400 | 0.4 | 250 | 5 | 3 | 8 | 3 | 1 | 2.8 | 0.8 | DIP |
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| HL250-600 | 0.6 | 250 | 5 | 3 | 12 | 2 | 0.6 | 3.2 | 1.2 | DIP |
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