WMSIC Electronic Components

ERJ2RKF2872X

ModelERJ2RKF2872X
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 ERJ2RKF2872X
Type
PANASONIC
Minimum package
10000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
ERJ2RKF2872X
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.011g
Electronic Component
28.7kΩ
Electronic Component
1
Electronic Component
BM0264355226
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.

ERJ2RKF2872X厚膜贴片电阻产品概述

ERJ2RKF2872X是松下(PANASONIC)推出的小型化高精度厚膜表面贴装电阻,隶属于其经典ERJ系列,专为高密度PCB设计、宽温环境及阻值精度要求场景打造,兼具成本优势与工业级可靠性,是电子系统基础电阻的优选元件之一。

一、产品核心身份与系列定位

该型号针对0402(英制1005公制)封装优化,核心定位为通用型小功率高精度电阻,覆盖消费电子、工业控制、通信等多领域的信号调理、分压、滤波等基础电路需求,是替代插件电阻、实现电路小型化的关键元件。

二、关键技术参数详解

参数明确了应用边界与性能表现,核心项如下:

  • 阻值与精度:标称阻值28.7kΩ,精度±1%(符合JIS C 5201-1标准),阻值偏差范围为28.413kΩ~28.987kΩ,满足运算放大器反馈、传感器信号放大等对阻值准确性的要求;
  • 功率与电压:额定功率100mW(0402封装常规等级),额定电压50V;实际需遵循降额原则(功率≤80mW、电压≤40V),避免过热导致阻值漂移;
  • 温度特性:温度系数(TCR)±100ppm/℃,即温度每变化1℃,阻值变化≤2.87Ω,厚膜电阻中属于中等偏优水平,降低宽温环境下的电路波动;
  • 工作温度:-55℃~+155℃,覆盖工业级、部分汽车电子的极端环境需求,无需额外温控设计。

三、封装与工艺特性

  1. 封装尺寸:0402(1.0mm×0.5mm×0.35mm),体积仅为0805封装的1/4,适配智能手机、智能穿戴、高密度通信模块等空间严苛场景;
  2. 厚膜工艺:采用氧化铝陶瓷基底(Al₂O₃)+厚膜电阻浆料印刷+高温烧结,陶瓷导热优异,可快速散发热量;电阻层稳定性强,1000小时老化后阻值漂移≤0.5%;
  3. 贴装兼容性:两端电极采用镍/金镀层,适配回流焊、波峰焊等主流工艺,焊接可靠性符合IPC标准。

四、典型应用场景

结合参数与封装特性,适用于:

  • 消费电子:手机音频电路(分压滤波)、平板电源管理(反馈电阻);
  • 工业控制:PLC传感器信号调理、小型电机驱动限流;
  • 通信设备:基站射频匹配网络、路由器信号衰减;
  • 医疗电子:血糖仪、血压计信号处理(空间与精度要求高);
  • 汽车电子:车载中控按键、胎压监测信号放大(部分批次符合AEC-Q200)。

五、可靠性与环境适应性

松下品质管控确保可靠性:

  • 宽温稳定:-55℃~+155℃阻值变化≤1%,应对高原、沙漠等极端环境;
  • 环保合规:符合RoHS 2.0、REACH,无铅无卤,适配绿色设计;
  • 抗恶劣环境:陶瓷基底耐湿、耐腐蚀,85%RH高湿度、盐雾环境下长期工作(符合JIS C 5201-2)。

六、选型与使用注意事项

  1. 降额使用:实际功率≤80mW、电压≤40V,避免过载失效;
  2. 焊接工艺:回流焊峰值温度245℃±5℃,时间≤30秒(遵循松下推荐曲线);
  3. 替代参考:优先选松下同系列,或其他品牌0402封装、28.7kΩ±1%、100mW电阻(需确认TCR与工作温度匹配)。

ERJ2RKF2872X凭借小型化、高精度、宽温适应性及松下品质,成为多领域电子系统基础电阻的可靠选择,平衡了性能与成本控制。

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