WMSIC Electronic Components

ERJ2RKF1212X

ModelERJ2RKF1212X
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 ERJ2RKF1212X
Type
PANASONIC
Minimum package
10000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
ERJ2RKF1212X
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.011g
Electronic Component
12.1kΩ
Electronic Component
1
Electronic Component
BM0257349568
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.

ERJ2RKF1212X 厚膜贴片电阻产品概述

ERJ2RKF1212X是松下电子推出的一款小型化厚膜贴片电阻,针对低功耗、高密度电路设计,核心参数涵盖12.1kΩ阻值、±1%精度、100mW额定功率及宽温适应性,适用于多类电子设备的信号调理、分压限流等场景,依托松下成熟的厚膜工艺,兼具成本优势与可靠性。

一、产品核心身份与定位

该电阻属于松下ERJ系列厚膜贴片电阻,聚焦小型化电子设备的低功耗应用:0402封装适配高密度PCB布局,厚膜工艺平衡了性能与成本,可替代同参数薄膜电阻用于非超精密场景,是消费电子、工业控制、物联网终端等领域的高性价比选型。

二、关键电气性能参数详解

1. 阻值与精度

阻值为12.1kΩ±1%,精度满足大多数工业及消费电子电路的信号处理需求(如传感器信号放大、MCU I/O端口限流)。相比常规±5%精度电阻,可降低系统误差累积,避免后续电路(如ADC采样)的精度偏差。

2. 功率与损耗

额定功率100mW,适配0402封装的功率等级,能稳定承载低功耗电路的功率损耗(如智能穿戴设备的心率传感器信号调理)。实际使用需注意功率降额:环境温度超过70℃时,需将功率限制在额定值的80%以下,避免过热导致阻值漂移。

3. 温度系数与宽温适应性

温度系数(TCR)为**±100ppm/℃**,反映阻值随温度变化的特性:
以12.1kΩ为基准,每变化1℃,阻值变化约1.21Ω;在-55℃至+155℃的工作温区内,最大阻值变化量约254Ω(温度变化210℃),总变化率约2.1%,可满足户外设备、车载辅助系统等宽温场景的稳定工作,无需额外温度补偿。

三、物理封装与结构特性

1. 封装尺寸

采用0402封装(公制1.0mm×0.5mm,英制0.04英寸×0.02英寸),是贴片电阻中较为小巧的类型,可显著提升PCB集成密度,适合智能手表、小型物联网节点等对空间严苛的设备。

2. 厚膜工艺结构

  • 基底:高纯度氧化铝陶瓷,耐高温、绝缘性好;
  • 电阻层:钌基厚膜浆料,通过丝网印刷+高温烧结形成,阻值一致性佳;
  • 电极:银钯合金端电极,焊接可靠性高,减少接触电阻;
  • 涂层:松下定制防潮涂层,降低湿度对电阻性能的影响。

四、环境适应性与可靠性

1. 宽温工作能力

覆盖**-55℃~+155℃**,符合工业级器件温区要求,可在户外环境监测(如土壤湿度传感器)、车载胎压监测等场景稳定运行。

2. 机械与耐候性

  • 抗振动冲击:0402封装机械强度较高,能耐受便携设备的日常振动;
  • 耐湿性:厚膜结构+防潮涂层,可在相对湿度90%以下环境长期使用;
  • 长期稳定性:松下品质管控下,阻值漂移率低于行业平均水平,保障电路长期可靠。

五、典型应用场景

  1. 消费电子:智能手机触控传感器分压、智能手表心率信号调理;
  2. 工业控制:小型PLC I/O接口限流、温度传感器输出放大;
  3. 物联网终端:低功耗传感器节点(如环境监测)的分压/限流电路;
  4. 医疗设备:小型监护仪的信号滤波电路(如血氧传感器调理)。

六、选型与使用注意事项

  1. 焊接工艺:采用回流焊时,需遵循松下推荐曲线(峰值温度≤245℃,回流时间≤30秒),避免过温损坏电阻层;
  2. 存储条件:未焊接电阻需存于15-35℃、30-70%湿度的干燥环境,避免受潮影响焊接;
  3. 精度匹配:精密测量电路(如高精度ADC采样)需结合TCR计算实际阻值,必要时加温度补偿;
  4. 静电防护:贴片电阻易受静电损坏,焊接/存储需采取ESD防护措施。

ERJ2RKF1212X凭借小巧封装、稳定性能及宽温适应性,成为松下ERJ系列中低功耗高密度电路的经典选型,可满足多领域电子设备的设计需求,同时依托松下的品质体系,保障了产品的一致性与可靠性。

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