WMSIC Electronic Components

RUILON 10D821K

Model10D821K
PackageThrough-hole
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 10D821K
Type
RUILON
Minimum package
500 袋装

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
10D821K
Electronic Component
1
Package
Through-hole
Electronic Component
Varistor Resistor
Electronic Component
44.3J
Electronic Component
0.968g
Electronic Component
1
Varistor Voltage
738V~902V
Electronic Component
BM0258739885
Voltage
1.355kV
Static Power
400mW
Static Capacitor
130pF@1kHz
Operating Voltage(AC)
510V
Operating Voltage(DC)
670V

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

10D821K 产品概述

一、产品简介

10D821K 是 RUILON(瑞隆源) 出品的一款高能量压敏电阻(MOV),采用插件(通孔)封装,专为中高压电源系统的浪涌保护设计。器件通过校验,适用于工业电源、变频器、光伏逆变器、UPS、配电箱及大型电机驱动等需要吸收大能量冲击的场景。

二、主要规格与性能

  • 压敏电压(V1mA):738V ~ 902V,适配不同工况下的压敏触发要求。
  • 钳位电压(Ipeak):约1.355kV,能在瞬态冲击时将过电压限制在安全范围。
  • 峰值浪涌电流:2.5kA(单次浪涌能力),配合良好散热可应对短时大电流冲击。
  • 能量吸收:44.3J(单次能量吸收能力),具备较强的冲击能量处理能力。
  • 工作电压:DC 670V / AC 510V(连续运行电压等级),建议选型时保证工作电压显著低于压敏电压下限以延长寿命。
  • 静态电容:约130pF @1kHz,在对信号完整性敏感的应用需评估其影响。
  • 静态功率耗散:400mW,反映漏电与热耗散特性,需考虑散热与环境温度。

三、典型应用场景

  • 工业电源与配电系统:用于主电源侧或关键设备的过压保护,抑制雷击与开关冲击。
  • 逆变器与变频器:保护直流中间环节和功率模块免受瞬态过压损害。
  • 光伏/储能系统:并联在直流总线上,防止外部雷击或系统切换引起的高压脉冲。
  • UPS、电力保护设备及大型电动机控制柜:作为最后一级吸收元件配合保险与气体放电管形成级联保护。

四、选型与使用建议

  • 工作电压匹配:保证系统连续工作电压(DC/AC)低于压敏电压下限,通常留有10%~30%裕度以减少漏电和发热。10D821K 的 DC 670V 工作值与压敏下限 738V 匹配合理。
  • 串联/并联原则:若单个器件能量不足,可采用并联或并列多只器件,但注意均流与布局。
  • 热管理与寿命:高频或频繁浪涌会降低寿命,建议配合熔断器、限流器和良好散热措施。
  • 对信号路径影响:若用于对高频信号线路保护,需评估 130pF 静态电容对带宽的影响,必要时选用低电容型号。
  • 安装要点:插件封装便于维修与替换,但在 PCB 上应尽量缩短导线长度,增大焊盘与散热面积,远离敏感信号线。

五、封装与可靠性

插件封装结构坚固,适合承受较大浪涌冲击和热循环,便于现场更换。RUILON 品牌在高能量 MOV 领域有成熟工艺,建议在最终设计中进行实际浪涌试验验证(如 8/20μs 浪涌测试),并结合环境温度、脉冲频次对寿命进行评估和冗余设计。

总结:10D821K 以较高的压敏电压范围、1.355kV 钳位能力和 44.3J 的能量吸收能力,适合中高压直流/交流系统的浪涌抑制。合理选型与良好散热、配合保护器件使用,可实现长期可靠的过压保护。

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