WMSIC Electronic Components

ERJ2RKF4023X

ModelERJ2RKF4023X
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 ERJ2RKF4023X
Type
PANASONIC
Minimum package
10000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
ERJ2RKF4023X
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.011g
Electronic Component
402kΩ
Electronic Component
1
Electronic Component
BM0264567812
Operating Temperature
55℃~+155℃
Operating Voltage
50V
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.

ERJ2RKF4023X 厚膜贴片电阻产品概述

一、产品定位与核心工艺

松下ERJ2RKF4023X属于工业级厚膜贴片电阻系列,针对「紧凑空间+宽温稳定」的应用场景设计,采用陶瓷基片厚膜丝网印刷工艺(氧化铝基片+钌系电阻浆料+银钯电极),平衡了成本、一致性与可靠性,是工业控制、消费电子、车载辅助电路的常规选型。核心工艺优势在于:

  • 氧化铝基片提供优异的热传导与机械强度,避免高温下阻值漂移;
  • 厚膜浆料的阻值一致性易控制,批量生产偏差稳定在±1%以内;
  • 银钯电极兼顾焊接性与抗硫化性能,适配回流焊/波峰焊工艺。

二、关键电气参数详解

ERJ2RKF4023X的参数精准匹配0402封装的性能边界,核心参数及实际意义如下:

  • 阻值与精度:402kΩ ±1%——覆盖多数模拟电路的分压、偏置需求(如运放反馈网络),无需额外校准即可保证信号偏差≤1%;
  • 功率等级:100mW——0402封装的典型功率规格,实际应用建议降额至70mW(70%),避免散热不足导致阻值漂移;
  • 工作电压:50V——计算得最大允许功率(V²/R≈6.2mW)远低于额定值,电压降额充足,可安全用于50V以下直流/交流电路;
  • 温度系数(TCR):±100ppm/℃——温度每变化100℃,阻值变化±1%,满足-55℃~+155℃宽温区稳定工作(如车载低温启动、工业高温环境);
  • 工作温度范围:-55℃+155℃——符合工业级宽温标准,比消费级(0℃70℃)覆盖更广的极端场景。

三、封装与物理特性

ERJ2RKF4023X采用0402封装(英制:0.04″×0.02″;公制:1.0mm×0.5mm),是小型化电子设备的主流封装,物理特性如下:

  • 尺寸:长1.0±0.2mm,宽0.5±0.2mm,高0.35±0.1mm(典型值);
  • 重量:约0.005g——轻量化设计适配高密度PCB布局(如手机主板、PLC模块);
  • 电极结构:两端为银钯合金电极,表面镀锡,焊接后与PCB铜箔结合力强,无剥离风险;
  • 包装形式:卷装(10000pcs/卷),兼容SMT自动贴片机,生产效率高。

四、典型应用场景

结合参数与封装特性,ERJ2RKF4023X的核心应用场景包括:

  1. 工业控制:PLC模拟量输入模块的分压电阻(4-20mA信号转换)、PT100温度传感器的信号放大偏置电路;
  2. 消费电子:智能手机音频电路(耳机接口偏置)、电池管理系统(BMS)的电压采样电阻;
  3. 车载电子:中控背光调节电路、胎压监测传感器的信号调理电阻(部分型号通过AEC-Q200车载认证);
  4. 电源管理:DC-DC转换器的反馈分压网络、小功率LED驱动的限流电阻。

五、可靠性与环境适应性

松下厚膜电阻经过严格可靠性测试,ERJ2RKF4023X的环境适应性满足:

  • 温循测试:-55℃~+155℃循环1000次后,阻值变化≤0.5%,TCR保持稳定;
  • 耐湿性:60℃/95%RH环境下1000小时,阻值变化≤0.5%,电极无氧化;
  • 抗硫化测试:符合JESD22-A101标准,在含硫环境(如汽车发动机舱)中工作稳定;
  • 长期稳定性:125℃下工作1000小时,阻值变化≤0.3%,适合连续运行设备。

六、选型与使用注意事项

  1. 功率降额:实际功率≤70mW(70%额定值),避免PCB散热不足;
  2. 静电防护:ESD敏感(HBM±2kV),操作需防静电手环,存储于抗静电包装;
  3. 焊接工艺:回流焊峰值温度240℃±5℃,时间≤30s,避免过热损坏;
  4. 替代选型:需更高精度可换ERJ2RKF4023V(±0.5%,TCR±50ppm/℃),同封装同功率。

该产品以高性价比、宽温稳定适配多数中低端模拟电路场景,是松下ERJ系列的经典常规型号。

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