WMSIC Electronic Components

RUILON RL0805A120K

ModelRL0805A120K
Package0805
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 RL0805A120K
Type
RUILON
Minimum package
4000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
RL0805A120K
Electronic Component
1
Package
0805
Electronic Component
Varistor Resistor
Electronic Component
150mJ
Electronic Component
0.043g
Electronic Component
1
Varistor Voltage
14.4V
Electronic Component
BM0264391772
Voltage
30V
Operating Voltage(AC)
5V
Operating Voltage(DC)
8V
Surge Current
50A
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.

RL0805A120K 片式压敏电阻产品概述

RL0805A120K是RUILON(瑞隆源) 推出的0805封装片式压敏电阻(MLV),专为小功率电路的瞬态过压防护设计,具备体积紧凑、响应速度快、浪涌吸收稳定等特点,广泛适配消费电子、汽车电子、工业控制等领域的高密度贴装场景。

一、产品基本属性

该器件属于氧化锌基片式压敏电阻,封装规格为英制0805(对应公制2012),尺寸仅2.0mm×1.2mm,适合高密度表面贴装(SMT)工艺。核心功能是当电路遭遇瞬态过压(如静电放电、开关浪涌、雷击感应)时,快速从高阻态切换为低阻态,钳位电压并吸收浪涌能量,避免后级敏感元器件(如MCU、传感器)被击穿损坏。

二、核心电气参数解析

RL0805A120K的关键参数明确了防护能力边界,具体如下:

  • 压敏电压(V₁ₘₐ):14.4V(标称值12V,偏差±20%,即12V~14.4V)。该参数是通过1mA直流电流时的电压,是判断常态工作电压兼容性的核心指标。
  • 钳位电压(V_clamp):30V(峰值浪涌电流50A下的电压)。当电路遭遇50A浪涌时,器件可将电压限制在30V以内,有效隔离过压(典型MCU工作电压3.3V/5V,30V钳位值足够保护后级)。
  • 工作电压:DC8V(直流持续最大电压)、AC5V(交流有效值持续最大电压)。AC5V峰值约7.07V,远低于压敏电压下限12V,避免常态导通导致老化。
  • 峰值浪涌电流(I_pp):50A(8/20μs标准浪涌波形下的最大允许峰值)。适用于中等强度浪涌场景(如室内设备雷击感应、开关电源启动浪涌)。
  • 吸收能量:150mJ(单次浪涌最大吸收能量)。与浪涌电流、钳位电压正相关,可有效吸收瞬态能量,避免器件过热损坏。

三、典型应用场景

RL0805A120K因体积小、防护能力适配小功率电路,常见应用包括:

  1. 消费电子:手机/平板Type-C充电接口、耳机接口,防止静电放电(ESD)或充电浪涌损坏主板;智能穿戴设备(手表、手环)电池充电电路防护。
  2. 汽车电子:车载USB接口(手机充电)、小功率传感器(胎压监测)信号线路,适配汽车12V电源系统的低功耗模块。
  3. 工业控制:小型PLC数字I/O端口、物联网传感器节点(温湿度)电源/信号线路,抑制现场开关浪涌或电磁干扰(EMI)。
  4. 通信设备:路由器、交换机RJ45接口、电源输入端口,防护雷击感应浪涌或静电干扰。

四、选型与使用注意事项

为确保防护效果和可靠性,使用时需注意:

  1. 工作电压降额:常态工作电压需低于压敏电压的80%(推荐)。用户给定DC8V仅为压敏电压上限的55.5%,符合降额要求,可延长寿命。
  2. 浪涌等级匹配:若电路遭遇更高浪涌(如户外设备≥100A),需并联多个同型号器件,或选择更高容量的0805封装产品。
  3. 焊接工艺:采用回流焊,峰值温度260℃±5℃,焊接时间≤30s,避免高温损伤器件性能。
  4. 并联一致性:并联器件需选同批次、压敏电压偏差≤±5%的产品,避免电流集中损坏部分器件。

五、品牌与可靠性优势

RUILON(瑞隆源)作为国内过压保护领域专业厂商,RL0805A120K具备:

  • 环保合规:符合RoHS 2.0、REACH标准,无铅无卤,适配绿色设计。
  • 可靠性测试:经过-40℃+85℃高低温循环(1000次)、湿热试验(85℃/85%RH,1000h)、振动试验(102000Hz,1g),满足工业/消费级场景要求。
  • 批量一致性:压敏电压偏差控制在±20%以内,浪涌容量一致性好,降低批量生产风险。

该器件通过明确参数和稳定防护能力,成为小功率电路瞬态过压防护的高性价比选择,可有效提升电路抗干扰能力与可靠性。

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