0603自恢复保险丝

A.Features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

♦Surface mount packaging for automated assembly

贴片式封装，方便自动化生产

♦Lead-free and compliant with the European Union RoHS Directive2002/95/EC 符合欧州ROHS无铅环保要求

B.Application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

♦Computer motherboards

计算机主板

♦IEEE1394Ports

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

Polymer resettable fuse are made of polymeric PTC materials which is a matrix of polymer containing 自恢复保险丝是聚合物高分子材料通过特殊工艺而成，

dispersed conductive particles.Generally,the device has a very low resistance.If an over-current

高分子粒子按一定的规律排列，自恢复保险丝器件有低内阻

happened,as a response to the damage current,the resistance will immediately increase to very high,当电路中电流突然增大时，器件将会在短时间内阻值升到高阻状态、高分子膨胀从而起到减少过电流；

reducing the current of the circuit to a safe value that the loading can carry.Once fault to the circuit is

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

ready for normal operation.

一旦故障排除后，高分子将会恢复正常规则排序。

D.Product Dimensions 产品尺寸

E.Electrical Characteristics 电气参数

F.Thermal Derating 温度温度与电流与电流与电流折减比折减比(A)

SMD0603-035

0.47

0.41

0.38

0.35

0.29

0.26

0.24

0.20

0.14

Test测试项目Test Conditions测试条件Accept/Reject Criteria判定标准

Resistance In still air@25℃Rmin≤R≤R1max

Time to Trip Vmax,25℃,In still air@25℃T≤max.time to trip(seconds)

Hold Current30min.at I H,In still air@25℃No trip

Trip Cycle Life Vmax,Imax,100cycles,In still air@25℃No arcing or burning

Trip Endurance Vmax,1hours,In still air@25℃No arcing or burning

G.Solder Reflow Conditions焊接时间与温度

H Order information定购信息

：

包装信息：

包装信息

SMD0805Series:5000PCS/盘

基本术语说明

I H：保持电流25℃静态空气环境中PPTC不工作的最高电流

IT：触发电流25℃空气环境中PPTC动作所需的最小电流

Ttrip：动作时间25℃空气环境5倍IH时最大动作时间

Vmax：最大工作电压PPTC的最大工作电压

Imax：最大承受电流PPTC在电路工作最大承受电流

Rmin：最小电阻25℃环境温度下PPTC最小零功率阻值

R1maX：最大电阻正常动作一次后，放置1小时，在25℃环境温度下PPTC最大功率阻值

NOTE:TERMINAL PAD SOLDERABILITY:

MEETS EIA SPECIFICATION RS186-9E

AND ANSI、J-STD-002CATEGORY3.

器件的焊接符合美国标准协会J-STD-002要求。