WMSIC Electronic Components

ERJ2RKF4122X

ModelERJ2RKF4122X
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 ERJ2RKF4122X
Type
PANASONIC
Minimum package
10000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
ERJ2RKF4122X
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.011g
Electronic Component
41.2kΩ
Electronic Component
1
Electronic Component
BM0265111066
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.

ERJ2RKF4122X 松下厚膜贴片电阻产品概述

一、产品核心身份与品牌背景

ERJ2RKF4122X是松下(PANASONIC) 推出的厚膜贴片电阻,属于其经典ERJ系列中的高精度小功率型号。松下作为全球电子元器件领军企业,在电阻器设计制造上具备数十年技术积累,厚膜电阻以稳定性高、一致性好、抗恶劣环境能力强著称,广泛覆盖消费电子、工业控制、汽车电子等领域。该型号针对小体积、高精度需求优化,采用0402封装,是高密度电路设计的常用元件。

二、关键电气性能参数解析

该型号的核心电气参数直接决定适用场景,具体解析如下:

  1. 阻值与精度:标称阻值为41.2kΩ,精度等级为**±1%**——此精度可满足大多数工业级电路的电阻匹配需求,避免因阻值偏差导致信号失真或功率损耗异常,适用于信号调理、分压网络等对阻值一致性要求较高的场景。
  2. 功率与耐压:额定功率为100mW,最大工作电压为100V。需注意:实际使用功率需低于额定值,且工作电压不得超过100V。通过计算((V=\sqrt{P×R})),最大推荐工作电压约为64V((\sqrt{0.1W×41200Ω}≈64V)),可避免电阻过热老化。
  3. 温度系数(TCR):阻值温度系数为**±100ppm/℃**,表示温度每变化1℃,阻值变化约0.01%。该系数处于厚膜电阻的高性能区间,可有效降低环境温度波动对电路性能的影响。

三、封装与物理特性

ERJ2RKF4122X采用0402封装(英制尺寸:0402,公制尺寸约1.0mm×0.5mm×0.3mm),是贴片电阻中体积较小的类型之一。小体积设计可显著节省电路板空间,提升电路集成密度,适合智能手机、可穿戴设备、小型工业模块等对空间要求苛刻的产品。

封装采用陶瓷基片+厚膜电阻层结构,兼具良好导热性与机械强度,可耐受回流焊等表面贴装工艺的高温冲击(回流焊峰值温度通常≤260℃),适配自动化贴装产线。

四、温度适应性与稳定性

该型号的工作温度范围为**-55℃至+155℃**,覆盖绝大多数工业与汽车电子的环境温度需求(如汽车发动机舱、户外工业传感器场景)。结合±100ppm/℃的温度系数,全温区阻值波动可控:

  • 若温度从-55℃升至+155℃(温差210℃),阻值变化约±2.1%,叠加初始精度±1%,总偏差最大约±3.1%,仍可满足工业场景性能要求;
  • 汽车电子典型高温(+125℃)下,相对于25℃基准温度,阻值变化约±1%,总偏差≤±2%,可靠性突出。

五、典型应用场景

基于小体积、高精度、宽温适应的特点,ERJ2RKF4122X适用于以下场景:

  1. 消费电子:智能手机/平板电脑的射频前端分压电路、可穿戴设备的传感器接口滤波网络;
  2. 工业控制:PLC输入输出模块、工业传感器信号放大电路、小型电机驱动限流电阻;
  3. 汽车电子:车载信息娱乐系统音频电路、车身控制模块信号检测电路(适配高温环境);
  4. 通信设备:小型基站/路由器的电源分压电路、信号衰减网络。

六、产品优势与市场定位

ERJ2RKF4122X的核心优势体现在:

  1. 高性价比:松下品牌可靠性与厚膜电阻成本优势结合,适合大规模量产;
  2. 宽温稳定性:-55℃~+155℃工作范围+±100ppm/℃温度系数,满足恶劣环境需求;
  3. 小体积集成:0402封装提升电路密度,适配小型化产品趋势;
  4. 高精度匹配:±1%精度减少电路调试难度,提升批量生产一致性。

该型号定位于中高端工业与消费电子领域,替代传统插件电阻或低精度贴片电阻,在保证性能的同时降低成本与体积。

总结:ERJ2RKF4122X是一款兼顾高精度、小体积与宽温适应性的松下厚膜贴片电阻,可满足多领域高密度电路设计需求,是工业控制、汽车电子等场景的可靠选择。

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