WMSIC Electronic Components

ERJ2RKF2493X

ModelERJ2RKF2493X
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 ERJ2RKF2493X
Type
PANASONIC
Minimum package
10000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
ERJ2RKF2493X
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.011g
Electronic Component
249kΩ
Electronic Component
1
Electronic Component
BM0264567793
Operating Temperature
55℃~+155℃
Operating Voltage
50V
Electronic Component
±100ppm/℃
Resistor Type
Resistor

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

ERJ2RKF2493X 厚膜贴片电阻产品概述

一、产品基本定位

ERJ2RKF2493X是松下(PANASONIC)推出的0402封装通用型厚膜贴片电阻,针对小型化、低功耗电子设备设计,兼顾电气稳定性与成本控制,是消费电子、工业控制等领域的主流选型之一。该型号采用成熟厚膜印刷工艺制造,符合RoHS环保标准,适配自动化贴装生产线。

二、核心电气性能参数

1. 阻值与精度

标称阻值为249kΩ,精度等级±1%,满足多数电路对阻值偏差的控制需求(如信号分压、反馈网络、基准电压校准等场景),避免因阻值误差导致的电路性能波动。

2. 功率与电压

  • 额定功率:100mW,适用于低功耗电路设计(如可穿戴设备、小型传感器模块);
  • 最大工作电压:50V,实际应用需注意电压降与功率的匹配($P=V^2/R$,需确保实际功率≤100mW)。

3. 温度系数(TCR)

±100ppm/℃,表示温度每变化1℃,阻值变化约$249kΩ×100×10^{-6}=24.9Ω$,可满足一般环境温度波动下的性能稳定性(如户外工业设备的昼夜温差场景)。

4. 工作温度范围

覆盖**-55℃~+155℃**,符合工业级器件的温度要求,可适配车载电子(部分场景)、高温工业控制器等极端温度环境。

三、封装与物理特性

采用0402英制贴片封装(对应公制尺寸:长1.0mm×宽0.5mm×高0.4mm),具备以下特点:

  • 尺寸紧凑:可有效缩小电路模块体积,适配智能手机、智能手环等小型化终端;
  • 贴装兼容性:适配常规SMT贴片机,贴装精度要求低,生产效率高;
  • 环保合规:无铅无卤,符合欧盟RoHS 2.0及中国GB/T 26572标准。

四、环境适应性表现

1. 温度稳定性

在全工作温度范围内,阻值漂移受控于±100ppm/℃,经高温存储(155℃×1000h)、温度循环(-55℃~+155℃×1000次)测试后,性能无显著衰减。

2. 耐湿与耐蚀性

厚膜电阻结构具备一定耐湿性能,可抵抗短时间潮湿环境(如湿度95%RH×1000h)影响,避免阻值漂移;表面镀锡处理提升抗腐蚀性,适配沿海或高盐雾环境(部分场景)。

3. 机械可靠性

焊接后机械强度可靠,可承受常规振动(10~2000Hz×2h)与冲击(1000m/s²×3次)测试,满足运输与使用中的振动冲击要求。

五、典型应用场景

  1. 消费电子:智能手机电源管理模块(分压、限流)、平板电脑音频电路(信号衰减)、智能手环低功耗电路(电压监测);
  2. 工业控制:小型PLC传感器信号调理(反馈网络)、工业物联网节点(基准电压分压);
  3. 通信设备:路由器射频前端(信号匹配)、小型基站电源滤波电路;
  4. 汽车电子:车载中控屏背光电路(电流限流)、胎压监测模块(信号分压)。

六、品牌与可靠性优势

松下作为全球电子元器件龙头,ERJ2RKF2493X继承了其厚膜电阻的核心优势:

  • 工艺一致性:厚膜印刷与烧结工艺成熟,批量产品阻值偏差、TCR一致性达±0.5%以内(实测);
  • 可靠性验证:通过IEC 61000、JIS C 5201等国际标准测试,平均无故障时间(MTBF)超10⁶小时;
  • 供应链稳定:全球12个生产基地布局,可保障长期稳定供货,降低客户断供风险。

注意事项

实际应用需结合电路条件进行降额设计:建议工作功率≤额定功率的80%(即80mW),环境温度≥125℃时需进一步降额,确保器件使用寿命与性能稳定。

该型号凭借紧凑封装、稳定性能与高性价比,成为小型化电子设备的优选电阻之一。

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