WMSIC Electronic Components

RUILON 14D911K

Model14D911K
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 14D911K
Type
RUILON
Minimum package
250 袋装

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
14D911K
Electronic Component
1
Package
Through-hole, P=7.5mm
Electronic Component
Varistor Resistor
Electronic Component
295J
Electronic Component
3.628g
Electronic Component
1
Varistor Voltage
819V~1.001kV
Electronic Component
BM0258739887
Voltage
1.5kV
Static Power
600mW
Static Capacitor
200pF@1kHz
Operating Voltage(AC)
550V
Operating Voltage(DC)
745V

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

14D911K 产品概述

一、主要参数概述

14D911K 为 RUILON(瑞隆源)品牌的插件型压敏电阻(MOV)器件,主要电气参数如下:

  • 压敏电压(标称):819V ~ 1.001kV
  • 钳位电压:1.5kV(峰值浪涌时典型钳位)
  • 额定工作电压:直流 745V,交流 550V
  • 峰值浪涌电流(8/20μs):4.5kA
  • 吸收能量:295J(单次脉冲能量,按照制造商条件)
  • 静态电容:200pF @ 1kHz
  • 连续功耗(静态功率):600mW
  • 封装形式:插件盘型(P=7.5mm 引脚间距)

二、产品特点

  • 高能量吸收:单次脉冲能量约 295J,可承受较大峰值浪涌(4.5kA),适用于工业及电力类高能量浪涌环境。
  • 有效钳位:峰值钳位约 1.5kV,在过压事件中能迅速将电压钳制,保护后端电路元件。
  • 宽电压工作范围:额定直流 745V、交流 550V,适配中高压直流/交流系统保护需求。
  • 低静态电容:约 200pF,较低的电容有利于对敏感信号线路的影响最小化。
  • 插件结构:P=7.5mm 引脚间距,便于手工或波峰焊装配,便于替换和维护。

三、典型应用场景

  • 中高压直流/交流供电系统的主浪涌保护装置(SPD)
  • 工业电源输入端、变频器、逆变器等电力电子设备的过电压保护
  • 光伏逆变器直流侧防护、储能系统保护(需符合系统电压匹配)
  • 配电柜、开关设备及大型电机控制柜的瞬态浪涌缓冲
  • 对电磁兼容和信号完整性有一定要求的场合,得益于较低电容特性

四、选型与使用建议

  • 确认系统最大工作电压不能超过压敏电阻的额定工作电压(直流 745V / 交流 550V),长时间在额定值附近工作会降低寿命。
  • 若存在反复高能量冲击,建议配合熔断器、限流器或气体放电管等器件形成组合防护,以分担能量并提升可靠性。
  • 注意钳位电压对下游元件的承受能力,必要时在系统中增加级联保护或阻尼。
  • 对温度敏感,应参考制造商的温度-功率曲线做环境温度的降额处理,避免器件长期处于高温大电流下工作。
  • 对关键信号线或高频线路,考虑静态电容对信号的影响,200pF 在多数电力应用可接受,但对高频微弱信号仍需评估。

五、机械与封装信息

  • 插件盘形封装,厚实碟形主体,适合手工或机械插件装配。
  • 引脚间距 P = 7.5mm,便于直接插板或卡装。
  • 建议在电路板上预留足够间隙和爬电距离,以满足高压隔离和安全要求。

六、可靠性与注意事项

  • 该器件属于一次性承受高能量后可能老化的被动保护元件,频繁遭受接近极限的冲击会逐步降低压敏性能。
  • 存储和使用应避免潮湿、机械应力和高温环境,合理的封装和固定可以延长使用寿命。
  • 在设计保护电路时,应将该件作为过压吸收单元的一部分进行系统级验证,关注响应时间、剩余电压和能量分配。
  • 推荐在最终应用前进行样机测试,验证实际浪涌条件下的钳位和能量吸收能力。

总结:14D911K 提供较高的浪涌吸收能力与适中的钳位特性,适合用于中高压电源和工业级防护场合。合理选型与配套保护电路设计能显著提升系统的抗浪涌能力与长期可靠性。若需更详细的温度特性曲线、脉冲寿命数据或封装图纸,建议联系厂商获取完整数据手册。

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