WMSIC Electronic Components

ERJ2RKF2322X

ModelERJ2RKF2322X
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
PANASONIC ERJ2RKF2322X
Type
PANASONIC
Minimum package
10000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
ERJ2RKF2322X
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.011g
Electronic Component
23.2kΩ
Electronic Component
1
Electronic Component
BM0257349702
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.

ERJ2RKF2322X 精密厚膜贴片电阻产品概述

ERJ2RKF2322X是松下(PANASONIC)推出的精密级厚膜贴片电阻,针对小型化、高精度电子设备的信号调理、功率分配等场景设计,以0402超小封装实现1%高精度阻值控制,同时具备宽温适应性与稳定的温度特性,是消费电子、工业控制、汽车电子等领域的常用基础元件。

一、产品定位与核心特性

该电阻定位于低功耗精密电路的核心被动元件,核心特性可概括为“小、精、稳、宽”:

  • 小体积:采用0402封装(英制0.04×0.02英寸,公制1005),适配高密度PCB设计,满足便携式设备小型化需求;
  • 高精度:阻值精度±1%,高于普通厚膜电阻的±5%,无需额外校准即可满足信号调理场景;
  • 稳定性:温度系数(TCR)±100ppm/℃,阻值随温度漂移可控;
  • 宽温域:工作温度-55℃~+155℃,覆盖工业、汽车级应用环境。

二、关键参数详解

1. 阻值与精度

标称阻值23.2kΩ,精度±1%,实际阻值范围22968Ω~23432Ω。该精度属于“精密级”,可满足模拟电路的分压、上拉/下拉、信号放大等需求,避免因阻值偏差导致的电路性能波动。

2. 功率与功耗

额定功率100mW,适配低功耗电路(如电池供电的便携式设备、传感器模块)。实际设计需预留80%功率余量(即≤80mW),避免长期过热导致阻值漂移。

3. 温度系数(TCR)

±100ppm/℃的含义为:每变化1℃,阻值变化±0.01%。例如,从25℃升至155℃(变化130℃),阻值最大变化±1.3%,结合±1%精度,总偏差控制在±2.3%以内,满足宽温环境稳定工作。

4. 工作温度范围

-55℃+155℃覆盖了工业现场(-40℃+85℃)、汽车舱内(-40℃~+125℃)及高温区域(如靠近发热元件),无需额外散热设计。

三、封装与工艺优势

1. 0402封装特点

尺寸仅1.0mm×0.5mm(公制),相比0603封装体积缩小60%,可显著提升PCB布线密度,适合智能手机、智能穿戴、小型传感器等高密度集成设备。

2. 厚膜电阻工艺

采用丝网印刷+高温烧结工艺:将电阻浆料印刷在氧化铝陶瓷基片上,经高温烧结形成电阻膜,再通过激光微调实现精确阻值。优势包括:

  • 阻值一致性好,量产稳定性高;
  • 成本低于薄膜电阻,适合中大规模应用;
  • 耐湿性、耐温性优于碳膜电阻,可靠性更高。

3. 环保兼容性

符合RoHS、REACH标准,采用无铅端电极,兼容现代SMT生产线,可实现高速贴装,降低制造成本。

四、典型应用场景

ERJ2RKF2322X的参数特性使其广泛应用于:

  1. 消费电子:智能手机主板I2C/SPI总线的上拉电阻、音频电路分压电阻;
  2. 工业控制:PLC模块、压力/温度传感器的信号放大/滤波电阻;
  3. 汽车电子:车载信息娱乐系统背光控制、CAN总线终端电阻;
  4. 医疗设备:便携式血糖监测仪、心电图仪的信号处理电路。

五、可靠性与选型注意事项

1. 可靠性验证

松下对该电阻完成多项测试:

  • 高温存储(155℃/1000h):阻值变化≤±0.5%;
  • 温度循环(-55℃~+155℃/1000次):阻值变化≤±0.3%;
  • 湿度偏压(85℃/85%RH/1000h):阻值变化≤±0.2%。

2. 选型替换

  • 更高精度(±0.1%):选松下ERJ-3RKF系列薄膜电阻(同封装);
  • 更高功率(200mW):选0603封装的ERJ-2RKF2322V;
  • 更低TCR(±50ppm/℃):选薄膜电阻ERJ-3RKF2322X。

该电阻以平衡的性能、成本与可靠性,成为小型化精密电路的主流选择,可满足大多数中高端电子设备的基础被动元件需求。

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