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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HL250-800 | 0.8 | 250 | 5 | 4 | 18 | 1 | 0.4 | 3.6 | 1.6 | DIP |
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| HL250-1000 | 1 | 250 | 7 | 5 | 20 | 0.8 | 0.3 | 3.6 | 2 | DIP |
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| HL250-1200 | 1.2 | 250 | 7 | 6 | 20 | 0.8 | 0.2 | 3.6 | 2.4 | DIP |
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| HL250-1500 | 1.5 | 250 | 7 | 7.5 | 20 | 0.6 | 0.2 | 4.8 | 3 | DIP |
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| HL250-2000 | 2 | 250 | 10 | 10 | 20 | 0.4 | 0.2 | 4.8 | 4 | DIP |
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| HL16-010 | 0.1 | 16 | 100 | 0.5 | 5 | 7.5 | 1.5 | 0.38 | 0.3 | DIP |
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| HL16-025 | 0.25 | 16 | 100 | 1.25 | 5 | 1.95 | 0.5 | 0.45 | 0.5 | DIP |
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| HL16-030 | 0.3 | 16 | 100 | 1.5 | 5 | 0.7 | 0.3 | 0.49 | 0.6 | DIP |
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| HL16-050 | 0.5 | 16 | 100 | 2.5 | 5 | 0.5 | 0.2 | 0.56 | 1 | DIP |
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| HL16-075 | 0.75 | 16 | 100 | 3.75 | 5 | 0.32 | 0.1 | 0.72 | 1.5 | DIP |
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| HL16-090 | 0.9 | 16 | 100 | 4.5 | 5 | 0.18 | 0.09 | 0.83 | 1.8 | DIP |
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| HL16-110 | 1.1 | 16 | 100 | 5.5 | 5 | 0.15 | 0.06 | 0.94 | 2.2 | DIP |
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| HL16-135 | 1.35 | 16 | 100 | 6.75 | 5 | 0.13 | 0.04 | 1.2 | 2.7 | DIP |
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| HL16-160 | 1.6 | 16 | 100 | 8 | 5 | 0.11 | 0.04 | 1.4 | 3.2 | DIP |
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| HL16-200 | 2 | 16 | 100 | 6 | 15 | 0.075 | 0.035 | 2.2 | 4 | DIP |
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| HL16-300 | 3 | 16 | 101 | 9 | 15 | 0.06 | 0.02 | 2.3 | 6 | DIP |
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| HL16-400 | 4 | 16 | 100 | 12 | 15 | 0.04 | 0.02 | 2.4 | 8 | DIP |
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| HL16-500 | 5 | 16 | 100 | 15 | 15 | 0.025 | 0.014 | 2.6 | 10 | DIP |
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| HL16-600 | 6 | 16 | 100 | 18 | 15 | 0.021 | 0.01 | 2.8 | 12 | DIP |
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| HL16-700 | 7 | 16 | 100 | 21 | 15 | 0.015 | 0.008 | 3 | 14 | DIP |
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| HL16-800 | 8 | 16 | 100 | 24 | 15 | 0.013 | 0.006 | 3 | 16 | DIP |
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| HL16-900 | 9 | 16 | 100 | 27 | 25 | 0.012 | 0.004 | 3.3 | 18 | DIP |
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| HL16-1000 | 10 | 16 | 100 | 30 | 30 | 0.011 | 0.004 | 3.7 | 20 | DIP |
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| HL16-1100 | 11 | 16 | 100 | 33 | 30 | 0.009 | 0.003 | 3.7 | 22 | DIP |
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| HL16-1200 | 12 | 16 | 100 | 36 | 30 | 0.008 | 0.003 | 4.2 | 24 | DIP |
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| HL16-1300 | 13 | 16 | 100 | 39 | 50 | 0.008 | 0.003 | 4.2 | 26 | DIP |
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| HL16-1400 | 14 | 16 | 100 | 40 | 50 | 0.007 | 0.003 | 4.2 | 28 | DIP |
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| HL30-050 | 0.5 | 30 | 40 | 2.5 | 5 | 0.6 | 0.25 | 0.5 | 1 | DIP |
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| HL30-075 | 0.75 | 30 | 40 | 3.75 | 5 | 0.37 | 0.2 | 0.6 | 1.5 | DIP |
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| HL30-090 | 0.9 | 30 | 40 | 4.5 | 8 | 0.22 | 0.1 | 0.7 | 1.8 | DIP |
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