WMSIC Electronic Components

RUILON 10D181K

Model10D181K
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RUILON 10D181K
Type
RUILON
Minimum package
500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
10D181K
Electronic Component
1
Package
Electronic Component
Electronic Component
Varistor Resistor
Electronic Component
16.2J
Electronic Component
0.712g
Electronic Component
1
Varistor Voltage
162V~198V
Electronic Component
BM0258857042
Voltage
300V
Static Power
400mW
Static Capacitor
470pF@1kHz
Operating Voltage(AC)
115V
Operating Voltage(DC)
150V

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

10D181K 产品概述

一、产品简介

10D181K 是 RUILON(瑞隆源)推出的一款径向引线金属氧化物压敏电阻(MOV),适用于对中低电压电源和线路进行雷击浪涌与瞬态过电压抑制保护。型号中“10D”通常表示盘片直径约 10 mm,“181” 表示名义压敏电压值(约 181V),“K” 表示容差等级(±10%)。该器件结合了较高的浪涌能力与较低的静态电容,适合电源输入端和工业设备的过电压保护应用。

二、主要电气参数

  • 压敏电压(Varistor Voltage):162V ~ 198V(典型名义 181V,±10%)
  • 钳位电压(Clamping Voltage):300V(在规定的浪涌条件下测得)
  • 允许工作电压(DC):150V
  • 允许工作电压(AC RMS):115V
  • 峰值浪涌电流:2.5 kA(器件规格通常按 8/20µs 浪涌波形评定,具体请参阅供应商数据页)
  • 能量吸收能力:16.2 J(单位浪涌能量,典型测量条件见数据手册)
  • 静态电容:470 pF @ 1 kHz(在高频/信号线应用上需注意)
  • 静态功率耗散:400 mW(持续漏电功耗,需注意热管理)
  • 封装形式:径向引线,便于通孔 PCB 安装及替换维护

三、工作原理与性能特点

金属氧化物压敏电阻在正常电压下表现为高阻状态,当线路出现瞬态过电压时,其阻抗迅速下降,将过电压钳位到安全范围,从而保护后级电路不受损害。10D181K 的特点包括:

  • 适配 115 VAC 工频电源的设计:115 VAC 的峰值约为 162.6 V(115 × √2),该型号名义压敏电压 181V 通常高于工频峰值,保证在正常工作条件下不发生导通;但在压敏电压的下限(162V)与工频峰值接近时需特别留意具体批次与工作环境。
  • 钳位能力较强:在大电流浪涌时钳位至约 300V,能有效吸收瞬态能量,保护后端设备。
  • 能量吸收与浪涌电流兼顾:2.5 kA 的峰值浪涌电流和 16.2 J 的能量指标,适用于常见雷电感应与开关瞬变保护场景。
  • 静态电容中等偏高(470 pF):对高频和高速数据线会产生影响,但对电源线保护通常可接受。

四、应用场景与选型建议

适用场景:

  • 家用/商用电源输入防护(如电源适配器、充电器、白色家电等)
  • 工业控制设备、仪器仪表的配电保护
  • 配合保险或熔断器作为一次浪涌抑制元件
  • 电力电子与变频器的边界保护(需配合 RC 滤波或熔丝)

选型建议:

  • 若保护对象为 115 VAC 电网,10D181K 为常见选择,但应确认器件的实际压敏电压批次是否始终高于电网峰值,避免在正常工况下持续漏流或发热。
  • 对于需极低电容的信号线(如 USB、以太网、视频信号等),470 pF 可能过大,应优先选择低电容专用 TVS 或小电容型 MOV。
  • 若浪涌等级高于典型雷击条件,建议选用更大能量等级或并联/串联组合并配合熔断保护。

五、安装、热与可靠性注意事项

  • 通过孔焊接安装时保持引线短而直,减小自感并利于热量散逸。
  • 静态功率 400 mW 为长期散逸功率上限,在常温下工作仍需留意环境温度和散热条件。高温环境下需适当降额使用。
  • MOV 为耗损型保护元件,经历多次大能量浪涌后参数会逐渐退化;建议在发生过大浪涌事件后检测或更换。对于关键设备,考虑加入故障指示或自愈方案。
  • 安装时应配合合适的熔断器或限流元件,避免 MOV 在极端短路情况下产生热失控。

六、典型电路与保护策略

  • 常规单相输入保护:将 10D181K 并联接于电源线与中性/地之间,用以吸收来自雷击或开关瞬变的高压脉冲;同时在相线上配合熔丝或 PTC 限流器以实现过流断开保护。
  • 与滤波器配合:在需要兼顾 EMI 抑制的场合,MOV 可与 X、Y 电容及共模电感配合使用,但需注意整体电容对信号特性的影响和电容等级的安全间隔。
  • 多级保护:对于要求较高的系统,可采用一级高速 TVS(保护高频脉冲)+ 二级 MOV(吸收大能量浪涌)的组合策略。

七、总结与采购参考

10D181K 是一款针对中低压电源保护设计的径向 MOV,具有 2.5 kA 峰值浪涌能力与 16.2 J 的能量吸收能力,钳位电压约 300V,适用于 115 VAC / 150 V DC 的工作环境。其 470 pF 的静态电容使其更适合电源端的保护而非高速信号线路。选用时应综合考虑工作电压、浪涌等级、环境温度与替换维护策略,必要时与供应商确认具体测试条件与可靠性数据。若需更详细的试验波形、温升曲线或寿命评估,请向 RUILON 获取完整数据手册与样品验证。

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