WMSIC Electronic Components

ERJ2RKF6491X

ModelERJ2RKF6491X
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 ERJ2RKF6491X
Type
PANASONIC
Minimum package
10000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
ERJ2RKF6491X
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.011g
Electronic Component
6.49kΩ
Electronic Component
1
Electronic Component
BM0264567788
Operating Temperature
55℃~+155℃
Electronic Component
±100ppm/℃
Resistor Type
Resistor
Electronic Component
Electronic Component

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

ERJ2RKF6491X 产品概述

一、产品核心身份与定位

ERJ2RKF6491X是松下(PANASONIC)推出的厚膜贴片固定电阻器,属于其通用型精密小功率电阻系列。该型号以0402超小型封装为核心,定位为电子电路中实现阻抗匹配、分压、滤波等基础功能的元件,适配高密度PCB设计与宽温工作场景,可满足消费电子、工业控制、汽车电子等多领域的低功耗精密需求。

二、关键性能参数深度解析

该电阻的核心参数围绕“精密、小功率、宽温”三大特性设计,具体解析如下:

  1. 阻值与精度:标称阻值6.49kΩ,精度±1%——实际阻值范围为6.4251kΩ~6.5549kΩ,满足多数精密信号调理电路(如传感器放大、射频前端匹配)的阻抗控制要求;
  2. 功率等级:额定功率100mW(25℃环境下)——适配0402封装的功率密度,可支撑低功耗电路(如可穿戴设备、智能手机)的负载需求,避免功率过载;
  3. 温度系数(TCR):±100ppm/℃——指温度每变化1℃,阻值变化百万分之一。以最高工作温度155℃为例,相比25℃基准温度,阻值最大变化约1.3%,叠加±1%精度后总变化不超过±2.3%,仍能保证电路性能稳定;
  4. 工作温度范围:-55℃+155℃——覆盖工业现场(如户外传感器)、汽车电子(如车载控制单元)等恶劣环境,远优于常规消费类电阻(0℃70℃)的适用场景。

三、封装与工艺特性

  1. 0402超小型封装:尺寸为英制0.04英寸×0.02英寸(约1.0mm×0.5mm),体积仅为0805封装的1/4,可显著降低PCB布局空间,适配智能手机、智能手环等高密度设计;
  2. 厚膜工艺优势:采用陶瓷基板+厚膜电阻浆料的烧结工艺——相比薄膜电阻成本更低,相比线绕贴片电阻更适合小封装;电阻层通过丝网印刷精准控制阻值,外层保护层可有效隔绝湿度、灰尘等环境影响,提升长期稳定性;
  3. 结构可靠性:电极采用镍/锡镀层,焊接兼容性强(适配回流焊、波峰焊);陶瓷基板具有优异的热传导性,可快速散发电功率产生的热量,避免局部过热导致的阻值漂移。

四、典型应用场景

基于参数特性,ERJ2RKF6491X适用于以下场景:

  1. 消费电子:智能手机、平板的信号滤波电路(如音频接口、射频前端)、电源管理模块的分压电阻;
  2. 工业控制:传感器信号放大电路(如温度、压力传感器)、PLC(可编程逻辑控制器)的输入/输出接口电阻;
  3. 汽车电子:车载仪表盘的背光控制电路、传感器接口(如胎压监测)的阻抗匹配电阻;
  4. 可穿戴设备:智能手环、手表的心率传感器信号调理电路、低功耗蓝牙模块的匹配电阻;
  5. 通信设备:小型基站、无线路由器的射频前端辅助电路(如滤波器、衰减器)。

五、品牌与可靠性优势

  1. 松下工艺积累:作为全球被动元件龙头企业,松下厚膜电阻的浆料配方与烧结工艺经过多年优化,阻值一致性、长期稳定性处于行业前列;
  2. 可靠性测试验证:符合IEC 60115-1等国际标准,通过以下核心测试:
    • 高温存储测试:155℃下存储1000小时,阻值变化率≤±1%;
    • 温度循环测试:-55℃~155℃循环1000次,阻值变化率≤±0.5%;
    • 湿度测试:85℃/85%RH环境下存储1000小时,阻值变化率≤±1%;
  3. 量产一致性:批量生产中阻值偏差控制严格,可满足客户量产需求,减少电路调试成本。

六、选型与使用注意事项

  1. 功率降额:环境温度高于25℃时需按松下 datasheet 降额使用(如70℃时降额至70mW,125℃时降额至30mW),避免过热导致阻值漂移;
  2. 焊接规范:回流焊峰值温度建议≤260℃,焊接时间≤10秒;波峰焊温度≤250℃,时间≤3秒,防止损坏电阻层;
  3. 静电防护:虽然厚膜电阻抗静电能力较强(ESD耐受≥2kV),但精密电路中仍建议采用静电防护措施(如接地工作台);
  4. 替换原则:替换时需确保阻值精度、功率、TCR、封装完全一致,否则可能导致电路性能下降(如信号失真、功率过载)。

该电阻凭借“小封装+高精度+宽温范围”的综合优势,成为多领域低功耗电路的优选被动元件,可有效平衡性能与成本需求。

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