Series

A.

Features

重要特性

重要特性

重要特性

重要特性

♦ Smaller size saves board space and cost

超小尺寸、节约空间和成本

♦ Resettable circuit protection

自恢复保护、免维护

♦ Fast time-to-trip

动作时间快

♦ Low resistance

低内阻值

♦ Lead-free and compliant with the European Union RoHS Directive 2002/95/EC

符合欧州ROHS无铅环保要求

B. Application

应用范围

应用范围

应用范围

应用范围

Polymer Resettable Fuse for over-current, over-temperature and short-circuit protection

可恢复保险丝用于过流、温度和线路短路保护

音响喇叭、VCD、DVD机、变压器、汽车电子、电子玩具、马达（电动工具）

♦ IEEE1394 Ports

IEEE1394通讯接口

♦ USB hub, ports and peripherals

USB交换机及外围设备

♦ Phones

电话设备

♦ Data communication

数据交换机

♦ Modems/ Ethernet/LAN

调制解调器/以太网

C. General Description

简要概述

简要概述

简要概述

简要概述

Polymer resettable fuse are made of polymeric PTC materials which is a matrix of

自恢复保险丝是聚合物高分子材料通过特殊工艺而成 ，

polymer containing dispersed conductive particles. Generally, the device has a very

高分子粒子按一定的规律排列，正常情况下，自恢复保险丝器件处于低内阻状态，

low resistance. If an over-current happened, as a response to the damage current,

当电路中电流突然增大时，

the resistance will immediately increase to very high, reducing the current of the

器件将会在短时间内阻值升到高阻状态、高分子膨胀

circuit to a safe value that the loading can carry. Once fault to the circuit is weed out

从而起到减少过电流；

and power is recuperated, the polymer will deflate itself , the device will reset and is

一旦故障排除后，高分子将会恢复正常规则排序。

ready for normal operation.

30V

Rev :

www.leiditech.com

01.06.2015

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