WMSIC Electronic Components

RUILON RL1812A820K

ModelRL1812A820K
Package1812
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RUILON RL1812A820K
Type
RUILON
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
RL1812A820K
Electronic Component
1
Package
1812
Electronic Component
Varistor Resistor
Electronic Component
1.8J
Electronic Component
0.107g
Electronic Component
1
Varistor Voltage
90V
Electronic Component
BM0264391811
Voltage
149V
Operating Voltage(AC)
42V
Operating Voltage(DC)
60V
Surge Current
800A
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.

RL1812A820K压敏电阻产品概述

一、产品基本定位与命名规则

RL1812A820K是RUILON(瑞隆源)品牌推出的1812贴片式氧化锌压敏电阻(MOV),核心作用是为电子电路提供过压保护,抵御雷击浪涌、静电放电(ESD)、开关瞬态等异常电压冲击,避免后端敏感器件(如IC、电容)损坏。

型号命名遵循行业通用逻辑:

  • RL:RUILON品牌标识;
  • 1812:封装尺寸(英制:0.18in×0.12in,公制≈4.5mm×3.0mm);
  • A:系列代号(代表标准贴片防护系列);
  • 820K:标称压敏电压(82V)+ 公差(K=±10%,实际压敏电压范围80V~90V,与参数一致)。

二、核心电气参数及实际意义

该产品的关键参数直接决定保护性能,需结合应用场景精准匹配:

1. 压敏电压(V₁ₘₐ)

  • 参数:90V(典型值);
  • 测试条件:1kHz/1mA直流电流;
  • 意义:压敏电阻通过1mA测试电流时的电压,是选型核心依据——需确保电路正常工作电压远低于此值(如DC60V以下),避免器件长期导通老化。

2. 钳位电压(V_c)

  • 参数:149V;
  • 测试条件:8/20μs浪涌波形下10A电流;
  • 意义:浪涌发生时,器件两端的最大电压限制。若被保护电路耐压低于149V,需搭配TVS管等器件组合防护。

3. 额定工作电压

  • 直流(DC):60V(连续工作电压上限,长期超压会加速漏电流上升);
  • 交流(AC):42V(有效值,交流峰值≈42V×1.414≈59.4V,与直流上限匹配)。

4. 峰值浪涌电流(I_pp)

  • 参数:800A;
  • 测试条件:8/20μs浪涌波形;
  • 意义:器件可承受的单次最大浪涌电流峰值,适用于中等强度浪涌场景(如普通电源端口、通信接口)。

5. 能量容量(E)

  • 参数:1.8J;
  • 测试条件:2ms方波;
  • 意义:浪涌能量的吸收能力。若电路浪涌能量接近1.8J,需并联多个器件或选择更高容量型号。

三、封装与物理特性

RL1812A820K采用1812贴片封装,适配主流SMT生产线,物理特性如下:

  • 尺寸:4.5mm(长)×3.0mm(宽)×1.2mm(厚,典型值);
  • 引脚:镀锡铜合金,焊接可靠性高,兼容回流焊、波峰焊工艺;
  • 温度范围:-55℃~125℃(存储/工作温度,满足工业级及消费电子环境需求);
  • 重量:≈0.1g(轻量设计,不增加电路整体重量)。

四、典型应用场景

该产品因尺寸紧凑、防护性能适中,广泛覆盖以下领域:

  1. 消费电子:手机充电器、笔记本电源适配器、智能音箱的AC/DC输入端口,抵御市电浪涌;
  2. 通信设备:路由器、交换机、光模块的电源/信号端口,防止雷击感应浪涌;
  3. 工业控制:PLC模块、传感器接口、小型变频器的辅助电源,适应工业环境瞬态干扰;
  4. 家电产品:电视、空调、洗衣机的电源滤波前级,保护后端IC电路。

五、选型与使用注意事项

为确保防护效果及器件可靠性,需注意以下要点:

  1. 电压匹配:连续工作电压不得超过DC60V/AC42V(有效值),环境温度>85℃时需降额20%;
  2. 浪涌验证:需按IEC61000-4-5标准测试电路浪涌,若电流超800A,建议并联2个器件;
  3. 安装位置:尽量靠近被保护电路输入端,减少引线长度(引线电感会降低防护效果);
  4. 老化监测:长期使用后,漏电流(DC60V下)应<5μA,若>10μA需更换;
  5. 环保合规:符合RoHS 2.0、REACH标准,无铅无卤,适配出口产品需求。

六、品牌与可靠性

RUILON(瑞隆源)是国内专注过压保护器件的知名厂商,RL1812系列产品通过:

  • 安全认证:UL 1449、VDE 0805;
  • 可靠性测试:高温老化、温湿度循环、1000次8/20μs 400A浪涌寿命测试(性能无衰减);
  • 生产工艺:全自动化封装,一致性好,适合批量生产应用。

该产品平衡了防护性能与成本,是中小功率电子电路过压保护的高性价比选择。

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