WMSIC Electronic Components

RUILON 14D471K

Model14D471K
PackageThrough-hole, P=7.5mm
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RUILON 14D471K
Type
RUILON
Minimum package
250 袋

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
14D471K
Electronic Component
1
Package
Through-hole, P=7.5mm
Electronic Component
Varistor Resistor
Electronic Component
84.6J
Electronic Component
2g
Electronic Component
1
Varistor Voltage
423V~517V
Electronic Component
BM0238760763
Voltage
775V
Static Capacitor
420pF@1kHz
Operating Voltage(AC)
300V
Operating Voltage(DC)
385V
Surge Current
4.5kA

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

14D471K 压敏电阻(插件式)产品概述

一、产品简介

14D471K 为 RUILON(瑞隆源)品牌的一款插件式金属氧化物压敏电阻(MOV),适用于电源与电网侧的浪涌抑制与过压保护。器件采用插件封装(引脚间距 P=7.5mm),便于电路板穿孔安装与替换维护。凭借较高的能量吸收能力和较低的钳位电压,适合中功率电源、工业设备及配电系统的浪涌防护应用。

二、主要技术参数

  • 压敏电压(VAR):423V ~ 517V
  • 钳位电压(VC):775V
  • 工作电压(DC):385V
  • 工作电压(AC):300V
  • 峰值浪涌电流:4.5 kA(厂方典型测试条件)
  • 吸收能量:84.6 J
  • 静态电容:420 pF @ 1 kHz
  • 封装形式:插件(P=7.5 mm)
  • 品牌:RUILON(瑞隆源)
    说明:以上参数为典型/标称值,具体测试条件与允许偏差请参见厂商详细规格书。

三、主要特点

  • 高能量吸收能力:单脉冲能量约 84.6J,可应对较强瞬态浪涌。
  • 有效钳位:在指定浪涌条件下钳位电压约 775V,对下游电路提供可靠限压保护。
  • 宽压范围:压敏电压覆盖 423–517V,适配多种中高压工况;适用于 300VAC 或 385VDC 以内的工作环境。
  • 插件封装:穿孔安装,维修替换方便,适合批量生产与现场维护。
  • 中等电容值:420pF 在高频下对敏感模拟/通信接口有一定影响,使用时需考虑对电路带来的寄生影响。

四、典型应用

  • 交流电源与配电柜的浪涌抑制(300VAC 系统)
  • 直流母线或逆变器输入侧的过压保护(≤385VDC)
  • 工业自动化设备、电机驱动器与控制柜的防雷击与浪涌保护
  • UPS、电源模块与开关电源的输入阶段保护
  • 照明电源与配电箱中的过压保护元件

五、选型建议

  • 工作电压匹配:确保系统正常运行电压(有效值)低于压敏电阻的长期工作电压(AC 300V / DC 385V)。
  • 考虑钳位与下游耐压:钳位电压 775V 为浪涌时限压值,需确认被保护器件能承受该瞬时电压。
  • 能量与浪涌电流裕量:根据现场可能出现的浪涌幅值选择合适的能量/电流等级,如出现频繁强浪涌,考虑并联或使用更高能量等级器件并配合熔断器。
  • 对于对信号完整性敏感的电路,注意 420 pF 电容对高频信号的影响,如有必要采用低容型或增加隔离滤波。

六、安装与使用注意事项

  • 插件安装时避免对外壳施加过大机械应力,焊接过程中避免长时间高温直烫引脚以防损伤内部结构。
  • 保持器件良好散热与间距,避免靠近高温元件或强热源,长期高温将降低寿命与能量吸收能力。
  • 不要在超过额定工作电压和能量的情况下长期使用;若预计有多次大冲击,应增加保护级数(如串联熔断器或组合使用电涌保护器)。
  • 贮存与运输避免潮湿、挤压与强震动,防止引脚变形或封装破损。

七、试验与可靠性建议

  • 出厂或工程验证时,应进行 V–I 曲线、漏电流测量、耐压试验与脉冲浪涌吸收试验(按厂方规格条件)。
  • 在实际应用环境中,定期检查外观裂纹、碳化痕迹或引脚松动,出现异常应及时更换。
  • 对关键应用建议与供应商确认具体测试基准与寿命曲线,以便制定维护周期与备用策略。

以上为 14D471K 压敏电阻的概要说明。若需产品规格书(Datasheet)、浪涌试验曲线或在特定应用场景下的选型建议,可提供系统工作条件以便进一步匹配与计算。

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