WMSIC Electronic Components

ERJ2RKF1200X

ModelERJ2RKF1200X
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 ERJ2RKF1200X
Type
PANASONIC
Minimum package
10000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
ERJ2RKF1200X
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.011g
Electronic Component
120Ω
Electronic Component
1
Electronic Component
BM0229299477
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.

ERJ2RKF1200X 厚膜贴片电阻产品概述

一、产品核心身份识别

ERJ2RKF1200X是松下(PANASONIC)推出的通用型厚膜贴片电阻,型号编码明确传递了核心属性:

  • 前缀“ERJ”为松下贴片电阻通用标识;
  • “2R”对应额定功率100mW;
  • “KF”代表精度等级±1%;
  • “1200”表示固定阻值120Ω(后两位“00”为倍率,即120×10⁰);
  • “X”关联0402封装及批次管控。
    该产品定位为“小型化、高精度、宽温适配”的基础电子元件,覆盖多领域电路设计需求。

二、关键性能参数解析

1. 阻值与精度

固定阻值120Ω,精度±1%——满足模拟信号处理、分压电路等对阻值准确性要求较高的场景,避免因阻值偏差导致信号失真或功率损耗异常。例如,在5V电源分压电路中,120Ω电阻可稳定输出4.95~5.05V的分压值,保障后级电路正常工作。

2. 功率额定值

100mW(0.1W)——在常规低功耗电路中可稳定运行,最大允许电流约9.1mA(公式:(I=\sqrt{P/R}=\sqrt{0.1/120}\approx0.0091A)),适配手机、耳机等便携设备的常见电流范围。

3. 温度系数(TCR)

±100ppm/℃——表示温度每变化1℃,阻值变化百万分之一百。在-55℃~+155℃的宽温范围内,阻值最大波动为±2.1%((100ppm/℃×210℃)),结合±1%初始精度,实际阻值仍处于电路可接受的误差区间,确保极端温度下性能稳定。

4. 工作温度范围

-55℃~+155℃——支持汽车发动机舱(120℃以上)、工业户外设备(-40℃以下)等极端场景,无需额外散热设计即可长期可靠运行。

三、封装与物理特性

采用0402封装(英制:0.04″×0.02″;公制:1.0mm×0.5mm×0.35mm),是当前贴片电阻中尺寸极小的封装之一,核心优势:

  • 高密度布局:适配智能手机、智能手表等小型化产品,可在1cm² PCB上布置超1000个该电阻,满足紧凑空间需求;
  • 焊接兼容性:支持回流焊(峰值温度≤260℃,持续≤10s)、波峰焊(温度≤250℃,持续≤3s)等常规工艺,与多数贴装设备兼容;
  • 机械稳定性:封装引脚间距合理,焊接后抗振动性能优异,符合车载、工业设备的振动测试标准(如10~2000Hz,加速度1.5g)。

四、典型应用场景

因体积小、精度高、宽温适配,该电阻广泛应用于:

  1. 消费电子:智能手机信号滤波电路、无线耳机音频放大电路、智能手表传感器接口电路;
  2. 汽车电子:车载仪表盘背光控制、车门模块信号电阻、导航设备信号处理(符合IATF 16949汽车电子标准);
  3. 工业控制:小型PLC输入输出接口、传感器信号调理电路;
  4. 医疗设备:便携式血糖仪电源电路、血压计信号放大电路(小型化设计需求)。

五、可靠性与品质保障

松下厚膜工艺及品质管控确保产品长期稳定:

  • 厚膜工艺优势:丝网印刷+高温烧结形成电阻膜层,附着力强、抗磨损/腐蚀,长期阻值漂移率≤0.5%/1000小时;
  • 国际标准认证:符合ISO 9001、IATF 16949(汽车电子)、RoHS(环保)等标准,每批次经阻值测试、温度循环(-55℃~+155℃,500次)、振动测试,一致性达99.9%以上;
  • 降额设计建议:实际工作功率建议不超过50mW(额定功率50%),避免高温过载导致性能衰减。

六、选型与使用注意事项

  1. 功率匹配:需根据电路实际功耗计算,避免超过100mW额定值;
  2. 焊接管控:回流焊/波峰焊需严格控制温度时间,防止封装开裂或电阻膜层损坏;
  3. 存储条件:建议存储于15℃35℃、湿度40%60%环境,避免长期暴露于潮湿/高温,影响焊接性能。

ERJ2RKF1200X以其“小体积、高精度、宽温可靠”的特点,成为消费电子、汽车电子等领域的主流贴片电阻选型之一,可有效降低电路设计复杂度,提升产品小型化程度。

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