“正温度热敏电阻-2”详细介绍
PTC是Positive Temperature Coefficient 的缩写，意思是正的温度系数，泛指正温度系数很大的半导体材料或元器件。通常我们提到的PTC是指正温度系数热敏电阻，简称PTC热敏电阻。PTC器件即高分子聚合物正温度系数器件，该器件能在电流浪涌过大、温度过高时对电路起保护作用。使用时，将其串接在电路中，在正常情况下，其阻值很小，损耗也很小，不影响电路正常工作；但若有过流（如短路）发生，其温度升高，它的阻值随之急剧升高，达到限制电流的作用，避免损坏电路中的元器件。当故障排除后，PPTC器件的温度自动下降，又恢复到低阻状态，因此PPTC器件又称为可复性保险丝。
“正温度热敏电阻-2”其他说明
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通过认证
