WMSIC Electronic Components

RUILON 05D471K

Model05D471K
PackageElectronic Component
BrandRUILON
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RUILON 05D471K
Type
RUILON
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
05D471K
Electronic Component
1
Package
Electronic Component
Electronic Component
Varistor Resistor
Electronic Component
8.5J
Electronic Component
0.493g
Electronic Component
1
Varistor Voltage
423V~517V
Electronic Component
BM0258712379
Voltage
810V
Static Power
100mW
Static Capacitor
55pF@1kHz
Operating Voltage(AC)
300V
Operating Voltage(DC)
385V

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

05D471K 产品概述

一、主要参数概览

05D471K(品牌:RUILON 瑞隆源)为径向引线型压敏电阻,关键电气参数如下:

  • 压敏电压(Varistor Voltage):423V ~ 517V
  • 钳位电压(Clamping Voltage):810V
  • 工作电压:DC 385V / AC 300V
  • 峰值浪涌电流:400A(单次脉冲峰值)
  • 吸收能量:8.5J
  • 静态电容:55pF @1kHz
  • 静态功率(持续功耗能力):100mW

已通过校验,参数稳定可信,适合中高压直流与交流防护场合。

二、产品特点

  • 高能量吸收:单次脉冲能量8.5J、峰值浪涌电流400A,能有效吸收工业与民用电网的瞬态过电压。
  • 钳位能力强:钳位电压约810V,能在高幅值冲击下限制电压升高,保护后端元件。
  • 低电容:55pF 的静态电容对高速信号影响小,适用于开关电源及部分对容性敏感的电路。
  • 径向引线封装:便于穿板安装和手工焊接,也适合波峰/回流焊前后处理的机械固定。

三、典型应用场景

  • 开关电源输入端和整流后直流母线防护(DC385V额定下的器件匹配)
  • 工业控制、电力变换设备、逆变器及充电桩等对浪涌保护要求高的场合
  • LED驱动、电机驱动与大功率电子负载的浪涌抑制
  • 配电箱和电源模块的一级防护器件

四、选型与使用建议

  • 工作电压留有裕量:本器件DC工作电压385V、AC 300V,选型时确保长期工作电压不接近压敏电压下限以防加速老化。
  • 考虑反复冲击:若场合存在频繁浪涌,应选能承受更高能量或并联/并联+串联方案以分担应力。
  • 对于对信号完整性敏感的线路,注意55pF电容带来的高频影响,必要时在布局上远离高速节点。

五、安装与可靠性注意

  • 径向引线封装便于固定,安装时避免对陶瓷体施加弯曲应力或点压,以免导致机械破裂。
  • 焊接建议遵循厂家温度曲线及预热要求,避免长期暴露在高温环境下导致特性漂移。
  • 静态功率限值100mW,连续泄漏能量不可超标,否则会产生热累积影响寿命。

六、故障模式与维护提示

  • 常见故障为反复冲击后压敏电压漂移或短路;设计时应考虑熔断器/热熔断保护以防灾级故障。
  • 定期巡检高压侧连接点与绝缘状态,出现异常发热、开裂或表面碳化应及时更换。

总结:05D471K 是一款适用于中高压防护的实用型压敏电阻,综合能量吸收、钳位能力及较低电容特性,使其在工业电源与电网侧浪涌保护中具有良好适配性。选型与布板时注意工作电压裕量与热管理,可获得长期稳定的保护效果。

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