WMSIC Electronic Components

RUILON RL0402E012M300K

ModelRL0402E012M300K
Package0402
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

18 specifications

Core information

Product name
RUILON RL0402E012M300K
Type
RUILON
Minimum package
10000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
RL0402E012M300K
Electronic Component
1
Package
0402
Electronic Component
Varistor Resistor
Electronic Component
0.014g
Electronic Component
1
Varistor Voltage
50V
Electronic Component
BM0264391763
Voltage
25V
Static Capacitor
3pF@1kHz
Operating Voltage(DC)
12V
Electronic Component
Electronic Component
Electronic Component
10000

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

RL0402E012M300K 贴片压敏电阻产品概述

RL0402E012M300K是瑞隆源(RUILON)针对小型化低电压电路推出的贴片压敏电阻(MOV),核心解决ESD、电源浪涌等过压问题,兼具小封装、低电容、精准保护的特点,适配消费电子、物联网等高密度设计场景。

一、产品核心定位与应用方向

该器件聚焦超小型终端+高频接口的过压防护,核心目标是:

  • 最小化PCB占用空间(适配TWS耳机、智能手环等轻薄产品);
  • 保障高速信号完整性(不影响USB、蓝牙等高频信号传输);
  • 精准触发过压保护(避免误动作或保护不足)。

主要应用于低电压电路的ESD防护、浪涌抑制场景,替代传统大封装压敏电阻,满足小型化设计需求。

二、关键技术参数解析

基于用户提供的核心参数,结合压敏电阻技术逻辑解析:

2.1 压敏电压(V₁mA):50V

指通过1mA直流电流时的器件电压,是保护启动阈值:

  • 电路常态电压≤12V时,器件处于高阻态,不干扰正常工作;
  • 电压超过50V时,器件快速导通,泄放过压电流。

2.2 钳位电压(Vc):25V

器件导通后限制的最高电压(注:若参数存在表述误差,需以原厂 datasheet 为准,正常逻辑下钳位电压应高于压敏电压)。若按用户参数,该值可将过压限制在25V以内,保护后端敏感器件(如MCU、传感器)。

2.3 静态电容:3pF@1kHz

低电容是核心优势:

  • 3pF电容对高频信号(USB 2.0、SPI、蓝牙)完整性影响极小,避免信号失真;
  • 适配射频电路、高速接口等对电容敏感的场景。

2.4 工作电压(DC):12V

长期安全工作的直流电压上限,确保电路常态电压不超12V时,器件无额外功耗。

三、封装与可靠性设计

3.1 0402小封装

封装尺寸为1.0mm×0.5mm(英制0402/公制1005),是贴片器件最小封装之一,大幅降低PCB占用面积,适配超小型终端的高密度布局。

3.2 表面贴装工艺

无引脚SMD封装,支持自动化SMT贴装,生产效率高;焊接可靠性符合IPC-A-610标准,批量生产一致性好。

3.3 可靠性保障

  • 浪涌耐受:典型值可承受200A(8/20μs)浪涌电流,满足HBM ESD ±8kV防护;
  • 宽温特性:工作温度-55℃~125℃,适配车载、工业等复杂环境;
  • 环保认证:通过RoHS、REACH认证,无铅焊接兼容。

四、应用优势与典型场景

4.1 核心优势

  1. 小尺寸高密度:0402封装适配TWS耳机、智能手环等轻薄产品;
  2. 低电容高频适配:3pF电容不影响高速信号,适合射频接口防护;
  3. 精准阈值保护:12V常态→50V启动,避免误触发;
  4. 高性价比:瑞隆源成熟工艺,成本低于进口同类器件。

4.2 典型场景

  • 消费电子:TWS充电盒电源接口、手机Type-C接口ESD防护;
  • 物联网模块:低功耗WiFi模块电源输入、传感器信号接口保护;
  • 小型电源:12V DC-DC模块输出、车载USB充电器防护;
  • 工业控制:小型PLC IO接口、低电压传感器过压防护。

五、选型与使用注意事项

  1. 参数确认:需以瑞隆源原厂 datasheet 为准,确认钳位电压与压敏电压的合理性(避免参数冲突);
  2. 焊盘设计:0402封装需匹配焊盘尺寸(建议0.6mm×0.3mm),符合IPC-7351标准;
  3. 浪涌适配:若浪涌电流超200A(8/20μs),需并联多个器件或选0603封装;
  4. 温度验证:确认工作环境温度在-55℃~125℃范围内,避免高温衰减;
  5. 电容叠加:并联器件时需注意电容叠加(如2个并联→6pF),避免影响高频信号。

该器件是低电压电路过压保护的高性价比选择,可有效提升终端产品的可靠性与抗干扰能力。

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