WMSIC Electronic Components

RUILON RL3225A431K

ModelRL3225A431K
Package3225
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+

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Technical data

Product details

19 specifications

Core information

Product name
RUILON RL3225A431K
Type
RUILON
Minimum package
1000 托盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
RL3225A431K
Electronic Component
1
Package
3225
Electronic Component
Varistor Resistor
Electronic Component
23J
Electronic Component
0.94g
Electronic Component
1
Varistor Voltage
387V~473V
Electronic Component
BM0264354611
Voltage
710V
Static Capacitor
95pF@1kHz
Operating Voltage(AC)
275V
Operating Voltage(DC)
350V
Electronic Component
Electronic Component

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

RL3225A431K 压敏电阻产品概述

RL3225A431K是瑞隆源(RUILON)推出的贴片式氧化锌压敏电阻,核心功能为电子系统的过电压浪涌保护,凭借3225紧凑封装与稳定电气性能,适配多类中低压电源及设备防护场景。

一、产品基本信息

该器件属于氧化锌压敏电阻(MOV)范畴,通过自身非线性伏安特性,在电路遭遇浪涌时快速导通,将过电压钳位至安全范围,保护IC、电容等敏感元件。采用3225贴片封装(行业通用标识,对应公制尺寸3.2mm×2.5mm),兼容SMT自动化生产,适合高密度PCB布局。

二、核心电气参数详解

关键参数经校准,直接决定防护能力与应用适配性:

1. 压敏电压

标称431V,误差±10%(387V~473V),定义为1mA直流电流下的电压值——是选型核心依据,需与系统工作电压匹配,避免误触发或保护不足。

2. 持续工作电压

  • 直流(DC):350V
  • 交流(AC):275V
    为器件长期稳定工作的电压上限,若超此值会加速老化失效。注意:AC275V峰值约388V,与压敏电压下限(387V)接近,可应对电网波动。

3. 钳位电压

8/20μs标准浪涌电流下,钳位电压最大值710V——直接反映浪涌抑制能力,可将过电压限制在710V内,保护后端元件。

4. 能量耐受

单次8/20μs浪涌能量容量23J,可承受雷击、电源开关浪涌等中等强度冲击,满足多数民用/工业低压场景需求。

5. 静态电容

1kHz测试频率下为95pF,属中等水平——适合低频电源电路,高频信号线路需谨慎评估电容干扰。

三、封装与尺寸特点

3225封装是贴片压敏的常用小型化方案,优势明显:

  • 紧凑尺寸:3.2mm×2.5mm平面尺寸,厚度约1.2mm,节省PCB空间;
  • 工艺兼容:支持回流焊、波峰焊等主流SMT工艺,适配批量生产;
  • 响应稳定:减少引线寄生参数,提升高频环境下的浪涌响应速度。

四、典型应用场景

结合参数适配性,主要应用于:

  1. 交流电源系统:家用插座、LED驱动电源、空调/洗衣机等家电电源板,应对电网浪涌/雷击;
  2. 直流电源设备:光伏逆变器、低压直流充电模块、工业直流电源的过压保护;
  3. 通信电源模块:对电容要求不高的基站电源、路由器电源浪涌防护;
  4. 工业控制电路:PLC、传感器模块电源端,应对工业电磁干扰及浪涌。

五、选型与应用注意事项

确保可靠工作需注意:

  1. 电压匹配:严格遵循DC350V/AC275V上限,避免长期过压;
  2. 浪涌评估:23J容量适用于中等浪涌,强浪涌场景可并联同规格器件(需布局均流);
  3. 高频慎用:95pF电容可能引入高频损耗,射频/高速信号线路建议选低电容压敏;
  4. 焊接控制:回流焊峰值温度≤240℃,避免过热损坏氧化锌晶界;
  5. 并联规范:器件需靠近浪涌入口,布局对称,减少引线差异导致的电流不均。

综上,RL3225A431K以稳定性能、紧凑封装及高性价比,成为中低压电源过压保护的实用选择。

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