WMSIC Electronic Components

ERJ2RKF4992X

ModelERJ2RKF4992X
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 ERJ2RKF4992X
Type
PANASONIC
Minimum package
10000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
ERJ2RKF4992X
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.011g
Electronic Component
49.9kΩ
Electronic Component
1
Electronic Component
BM0264567814
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.

ERJ2RKF4992X 厚膜贴片电阻产品概述

一、产品基本参数与核心规格

ERJ2RKF4992X是松下推出的0402封装厚膜贴片电阻,核心参数精准匹配消费电子、工业控制等场景的常规需求,具体规格如下:

  • 电阻类型:厚膜贴片电阻(采用厚膜丝网印刷+烧结工艺,稳定性优于普通碳膜电阻)
  • 标称阻值:49.9kΩ(阻值精度±1%,批量一致性好,减少电路调试成本)
  • 额定功率:100mW(0402封装下的常规高功率密度设计,满足低功耗电路需求)
  • 温度系数:±100ppm/℃(阻值随温度变化的稳定性适中,覆盖宽温环境)
  • 工作温度范围:-55℃至+155℃(符合工业级标准,可应对极端温度场景)
  • 品牌与封装:Panasonic(松下),封装为0402(英制0.04×0.02英寸,对应公制1005,体积仅1.0×0.5mm)

二、关键特性与性能优势

作为松下成熟的厚膜电阻系列产品,ERJ2RKF4992X具备以下实用特性:

  1. 阻值精度稳定:±1%的精度在批量生产中一致性优异,可直接替换同规格电阻,无需二次校准;
  2. 宽温适应性:-55℃~+155℃的工作范围,能应对工业现场的低温启动、高温持续运行(如户外设备、车载辅助系统);
  3. 小体积高密度:0402封装体积仅1.0×0.5mm,适合智能手机、小型PLC等高密度PCB设计,有效缩小产品尺寸;
  4. 抗焊接可靠性:采用松下特有的端电极结构(如镍/锡镀层),可承受回流焊/波峰焊的温度冲击,降低虚焊、焊盘脱落风险;
  5. 功率降额友好:100mW额定功率在常温下可满足多数低功率电路需求,高温环境下合理降额(如80%以下)仍能稳定工作。

三、典型应用场景

ERJ2RKF4992X的参数特性使其广泛适用于以下领域:

  1. 消费电子:智能手机/平板的音频滤波电路、智能穿戴设备的传感器偏置电阻、小型蓝牙模块的信号匹配网络;
  2. 工业控制:PLC输入输出模块的分压电阻、温度传感器接口的匹配网络、小型电机驱动的限流电路;
  3. 汽车电子:车载氛围灯控制电路、倒车雷达信号调理电路(需注意具体应用的汽车级认证要求,本产品温度范围覆盖部分场景);
  4. 通信设备:路由器/交换机的电源反馈电路、低频信号的衰减网络;
  5. 小型电源:DC-DC转换器的反馈分压电阻、线性稳压器的输出调节电阻。

四、封装与可靠性设计细节

  1. 封装尺寸:0402封装(实际尺寸约1.0mm×0.5mm×0.3mm,以松下官方datasheet为准),无引脚设计,兼容自动化贴装设备;
  2. 厚膜工艺优势:厚膜电阻通过高温烧结形成稳定的电阻膜,阻值漂移率低于碳膜电阻,适合长期使用;
  3. 环境适应性:符合IEC 60115-1电阻标准,经85℃/85%RH耐湿测试后,阻值变化率不超过0.5%;
  4. 机械应力耐受:贴片式结构减少了引脚断裂风险,可承受振动环境(如车载、工业机器人)的机械冲击。

五、选型与使用注意事项

  1. 功率降额:建议实际使用功率不超过额定功率的80%(如100mW×80%=80mW),环境温度高于125℃时需进一步降额至70%以下;
  2. 温度系数考量:若电路对阻值变化敏感(如精密测量电路),需确认±100ppm/℃的变化是否符合要求(如温度变化100℃,阻值变化±4.99Ω);
  3. 焊接工艺:回流焊温度曲线需遵循松下推荐(峰值温度245℃±5℃,时间不超过10秒),避免过温导致阻值漂移;
  4. 储存条件:未开封产品建议储存在25℃±5℃、湿度40%~60%的环境中,开封后建议12个月内使用完毕;
  5. 精度匹配:若需要更高精度(如±0.1%)或更低温度系数(如±50ppm/℃),需选择松下薄膜电阻系列(如ERJ-2RK系列薄膜版本)。

ERJ2RKF4992X作为松下成熟的厚膜贴片电阻,以高性价比、稳定性能满足多数中低端电路的需求,是工业控制、消费电子等领域的常用选型之一。

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