WMSIC Electronic Components

RUILON RL2220A820K

ModelRL2220A820K
Package2220
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 RL2220A820K
Type
RUILON
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
RL2220A820K
Electronic Component
1
Package
2220
Electronic Component
Varistor Resistor
Electronic Component
3.2J
Electronic Component
0.703g
Electronic Component
1
Varistor Voltage
72V~90V
Electronic Component
BM0264391829
Voltage
149V
Operating Voltage(AC)
46V
Operating Voltage(DC)
65V
Surge Current
1.2kA
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.

RL2220A820K压敏电阻产品概述

一、产品核心定位与品牌背景

RL2220A820K是瑞隆源(RUILON)推出的中低压通用型压敏电阻,聚焦电路过压防护场景,针对开关电源、通信设备、工业控制等领域的瞬时浪涌(如雷击感应、开关瞬态、静电放电)提供可靠的电压钳位保护。瑞隆源作为国内压敏电阻领域的专业厂商,其产品以高可靠性、宽温适应性和精准的浪涌承受能力为核心优势,RL2220A820K继承了品牌的技术积累,适配中低压电路的防护需求。

二、关键电气参数解析

RL2220A820K的参数针对中低压应用做了精准设计,核心指标如下:

  • 压敏电压:72V90V(型号“820K”中“820”表示标称压敏电压82V,“K”为±10%误差)。压敏电压是电流达1mA时的电压值,选型需匹配电路正常电压的23倍,避免长期过压老化。
  • 工作电压:直流(DC)65V、交流(AC)46V。这是产品持续工作的最大允许电压,若电路电压超过该值,会导致器件发热失效,选型时需严格匹配。
  • 钳位电压:149V(峰值浪涌电流1.2kA时的电压)。钳位电压是浪涌发生时的最大端电压,直接决定防护效果——149V的限值可有效保护后端敏感器件(如MOS管、IC、电容)不被击穿。
  • 浪涌承受能力:峰值浪涌电流1.2kA(8/20μs波形)、浪涌能量3.2J。该参数覆盖常见低压电路浪涌场景(如家庭/工业电网瞬态干扰),满足多数中低压设备的防护需求。

三、封装设计与物理特性

RL2220A820K采用2220表面贴装封装(尺寸约2.2mm×2.0mm×1.2mm),具备以下特点:

  • 贴装兼容性:适配自动化SMT生产线,支持回流焊、波峰焊等工艺,降低组装成本与人工误差。
  • 高密度应用:小体积封装适合空间受限的设备(如小型通信模块、智能家居控制器),可在有限PCB面积内实现防护。
  • 温适应性:工作温度范围-55℃~+125℃(瑞隆源典型参数),满足工业级、消费级设备的环境要求。

四、典型应用场景

RL2220A820K的参数特性使其适用于多种中低压电路防护,典型场景包括:

  1. 开关电源输入端:如LED驱动电源、笔记本适配器、工业电源模块的AC/DC端,防护电网浪涌对整流桥、滤波电容的冲击。
  2. 通信设备:如4G/5G基站小功率电源、路由器/交换机端口,避免雷击感应浪涌损坏通信芯片。
  3. 工业控制板:如PLC、变频器辅助电源,防护现场设备开关切换产生的瞬态浪涌。
  4. 智能家居:如智能插座、智能灯泡电源,保护MCU、传感器免受静电或电网瞬态干扰。

五、性能优势与应用价值

相比同封装、同电压竞品,RL2220A820K具备以下优势:

  • 低钳位比:钳位电压(149V)与标称压敏电压(82V)比值约1.82,远低于行业平均(部分竞品超2),精准限制过电压,减少后端器件防护压力。
  • 平衡的浪涌能力:1.2kA峰值电流+3.2J能量的组合,既满足常见浪涌需求,又避免过度设计的成本增加,性价比突出。
  • 品牌可靠性:产品经过高低温循环、湿热老化、浪涌寿命测试,失效率低,降低设备售后维护成本。

六、选型与使用注意事项

为确保防护效果与长期可靠性,使用时需注意:

  1. 电压匹配:电路正常电压需低于额定值(DC≤65V、AC≤46V),避免长期过压老化。
  2. 安装位置:尽量靠近输入端(如AC插座、DC端子),减少引线电感,提升浪涌响应速度(压敏电阻响应为ns级,引线电感会削弱效果)。
  3. 焊接工艺:遵循瑞隆源推荐曲线(回流焊峰值≤260℃,时间≤10s),避免高温损坏器件。
  4. 并联使用:若单只浪涌能力不足,可并联同型号器件,但需确保参数一致性(压敏电压偏差≤±5%),避免电流不均导致局部失效。

RL2220A820K凭借精准的参数设计、可靠的防护性能和适配性强的封装,成为中低压电路过压防护的高性价比选择。

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