WMSIC Electronic Components

RUILON RL2220A390K

ModelRL2220A390K
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RUILON RL2220A390K
Type
RUILON
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
RL2220A390K
Electronic Component
1
Package
2220
Electronic Component
Varistor Resistor
Electronic Component
2.5J
Electronic Component
0.692g
Electronic Component
1
Varistor Voltage
33.6V~42V
Electronic Component
BM0264254108
Voltage
80V
Operating Voltage(AC)
25V
Operating Voltage(DC)
30V
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.

RL2220A390K 压敏电阻产品概述

RL2220A390K是瑞隆源(RUILON) 推出的2220贴片封装压敏电阻,专为中低压电路的浪涌过电压防护设计,具备稳定电气性能与可靠浪涌耐受能力,适用于消费电子、通信及低功耗工业场景。

一、产品基本属性与核心定位

该器件属于氧化锌压敏电阻(MOV) ,利用氧化锌晶粒的非线性伏安特性实现防护:正常工作时呈高阻态(微安级漏电流),浪涌过电压时迅速导通钳位,泄放能量保护后级敏感元件(MCU、传感器、电源模块等)。

型号标识含义:

  • 2220:贴片封装尺寸(约2.2mm×2.0mm);
  • 390K:标称压敏电压39V(“K”为±10%公差),适配中低压电路防护需求。

二、核心电气参数详解

1. 压敏电压特性

标称39V,实际工作范围33.6V~42V(±10%公差)。选型关键:需高于电路正常电压1.2~1.5倍,避免长期漏电流过大导致老化。

2. 工作电压

  • 直流(VDC):30V;
  • 交流(VAC):25V;
    此为长期可靠工作的最大电压,超压会导致漏电流激增、器件失效。

3. 钳位电压

浪涌峰值电流1.2kA(8/20μs波形)下,钳位电压80V。该值直接决定防护效果,可有效保护5V/12V/24V供电的敏感元件。

4. 浪涌耐受能力

  • 峰值浪涌电流(Ipp):1.2kA(8/20μs);
  • 浪涌能量(E):2.5J;
    可承受多次中等强度浪涌(雷击感应、电源开关浪涌),满足日常设备防护需求。

三、封装与物理特性

采用2220贴片封装,优势明显:

  • 适配自动化SMT生产,效率高;
  • 体积小巧,可集成到智能手环、蓝牙耳机等高密度电路;
  • 封装结构稳定,抗振动、冲击性能良好,适合工业/车载环境(需结合认证)。

四、典型应用场景

结合参数特性,该器件广泛应用于:

1. 智能家居终端

  • 智能插座/门锁:并联24V电源端,防护开关浪涌;
  • 温湿度传感器:并联RS485总线,防止总线过压损坏MCU。

2. 消费电子

  • 蓝牙耳机/手环:并联充电接口,防护ESD及电源浪涌;
  • 便携式充电器:防护电池管理模块(BMS)输入端过压。

3. 小型工业设备

  • PLC输入输出模块:并联24V输入端口,承受现场开关浪涌;
  • 传感器节点:防护模拟量输入通道过压。

五、品牌与可靠性说明

瑞隆源(RUILON)是国内过压保护器件专业厂商,产品符合RoHS环保标准,通过多项可靠性测试:

  • 浪涌性能一致性好,批量偏差小;
  • 长期漏电流低(典型<1μA@DC30V),老化速率慢;
  • 2220系列已在多行业批量应用,验证可靠性。

六、选型与使用注意事项

1. 选型原则

  • 压敏电压需高于电路正常电压1.2~1.5倍(如24V电路选39V);
  • 浪涌能力匹配电路最大浪涌强度(如雷击感应<1kA,满足需求)。

2. 安装要点

  • 必须并联:串联无效,需并联在被保护电路两端(电源正负极、相线-零线、信号线-地);
  • 远离发热元件:浪涌后器件产热,需与发热元件保持距离;
  • 不超工作电压:超DC30V/AC25V需选更高压敏电压型号。

3. 老化监测

长期使用(1~2年)后,若压敏电压下降超10%,建议更换,避免防护失效。

RL2220A390K凭借小巧封装、稳定中低压防护性能,成为电子设备浪涌防护的优选器件,适合对体积、成本及可靠性有综合要求的场景。

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