WMSIC Electronic Components

ERJ2RKF3241X

ModelERJ2RKF3241X
Package0402
BrandPANASONIC
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
PANASONIC ERJ2RKF3241X
Type
PANASONIC
Minimum package
10000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
ERJ2RKF3241X
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.011g
Electronic Component
3.24kΩ
Electronic Component
1
Electronic Component
BM0257349576
Operating Temperature
55℃~+155℃
Operating Voltage
100V
Electronic Component
±100ppm/℃
Resistor Type
Resistor

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

ERJ2RKF3241X 精密厚膜贴片电阻产品概述

一、产品定位与核心身份

ERJ2RKF3241X是松下(PANASONIC)推出的精密级厚膜贴片电阻,隶属于其经典ERJ系列,针对高密度PCB设计、高精度信号调理场景优化,兼顾成本与性能平衡,是消费电子、工业控制等领域的主流选型之一。该型号以“小型化+宽温稳定+高精度”为核心设计逻辑,适配从普通消费设备到严苛工业环境的多场景需求。

二、关键技术参数详解

该型号的参数围绕“性能可控性”设计,核心指标需结合实际应用注意限制:

  1. 阻值与精度:标称阻值3.24kΩ(代码“3241”对应:324×10¹Ω),精度±1%——属于E96系列精密电阻(E96系列精度通常为±1%/±0.5%),可有效减少电路分压、偏置环节的误差,满足多数工业/消费设备的参数一致性要求。
  2. 功率与电压限制:额定功率100mW(0.1W),额定工作电压100V。需注意:实际工作中受功率约束,最大允许电流约5.5mA(I=√(P/R)=√(0.1/3240)≈5.53mA),最大允许电压约17.9V(V=I×R),不可直接以100V作为实际工作上限。
  3. 温度系数(TC):±100ppm/℃——表示温度每变化1℃,阻值变化±0.01%;若环境温度从25℃(基准)变化至125℃(温差100℃),阻值变化量≤±1%,与精度指标匹配,保证宽温下的参数稳定性。
  4. 工作温度范围:-55℃~+155℃——覆盖工业级及近汽车级的宽温需求,可适应极端气候(如北方户外设备)或高温工况(如汽车发动机舱附近电路)。

三、封装与物理特性

  1. 封装类型:0402(英制封装,对应公制1005,尺寸1.0mm×0.5mm×0.4mm)——目前最小的主流贴片电阻封装之一,适合高密度PCB布局(如智能手机主板、小型化工业模块)。
  2. 工艺基础:厚膜工艺——通过丝网印刷钌基电阻浆料于氧化铝陶瓷基板,经高温烧结、电极印刷、激光调阻(保证精度)制成,兼具成本优势与性能稳定性,比薄膜电阻更耐冲击,比普通碳膜电阻精度更高。
  3. 表面贴装特性:无引线设计,兼容回流焊、波峰焊(需注意0402封装的焊接参数:回流焊峰值温度260℃±5℃,持续时间≤10s),可实现自动化批量生产,降低组装成本。

四、典型应用场景

结合参数与封装特性,该型号的核心应用场景包括:

  1. 消费电子:智能手机/平板电脑的传感器接口电路(加速度计、陀螺仪偏置电阻)、音频滤波电路、电源管理模块反馈电阻(小封装适配主板高密度布局)。
  2. 工业控制:PLC模拟量输入/输出模块(高精度分压、电流采样)、小型工业传感器(温度、压力传感器信号调理)。
  3. 汽车电子:车载仪表盘背光控制电路、车身传感器(胎压监测、氧传感器)信号调理(宽温适配汽车舱内/舱外环境)。
  4. 通信设备:基站射频前端匹配网络、路由器/交换机电源滤波电路(小封装支持高密度PCB设计)。

五、可靠性与环境适应性

  1. 抗硫化性能:采用抗硫化浆料与封装设计,避免沿海地区、工业废气环境下的电阻失效(硫化会导致阻值漂移或开路)。
  2. 焊接可靠性:电极设计优化焊接润湿性,回流焊后焊接强度符合IPC-A-610标准,减少立碑、虚焊风险。
  3. 长期稳定性:经高温老化、温循测试(-55℃~155℃,1000次循环)后,阻值变化量≤±0.5%,满足工业级设备长期运行需求。

六、选型与使用注意事项

  1. 替代参考:若需±0.5%更高精度,可选带“B”后缀的升级型号;若需0.25W更大功率,可换0603封装的同阻值型号(如ERJ2RKF3241V)。
  2. 使用限制:
    • 避免超过100mW额定功率,否则会导致过热、阻值漂移甚至烧毁;
    • 焊接温度不超过265℃(0402封装极限);
    • 存储环境湿度≤60%,避免高湿影响电极性能。

该型号以高性价比、宽温稳定、小封装适配性为核心优势,是多数中高端电子设备信号调理环节的可靠选型。

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