WMSIC Electronic Components

VISHAY CRCW040239R0FKED

ModelCRCW040239R0FKED
Package0402
BrandVISHAY
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 24+

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
VISHAY CRCW040239R0FKED
Type
VISHAY
Unit
Electronic Component
Minimum package
10000

Technical parameters

Power
62.5mW
Electronic Component
Electronic Component
Electronic Component
VISHAY
Electronic Component
CRCW040239R0FKED
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.012g
Electronic Component
39Ω
Electronic Component
1
Electronic Component
BM0246759378
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.

CRCW040239R0FKED 厚膜贴片电阻产品概述

一、产品基本信息

CRCW040239R0FKED是VISHAY(威世) 推出的一款高精度厚膜贴片电阻,属于0402封装系列,专为小功率、高密度PCB设计场景打造。该电阻采用成熟的厚膜工艺制造,兼顾成本优势与性能稳定性,广泛应用于工业控制、消费电子、汽车电子等领域。

二、核心性能参数

1. 阻值与精度

额定阻值为39Ω,精度等级达**±1%**,可满足大多数电路对阻值偏差的严格要求——无需额外校准即可实现信号放大、滤波等功能的稳定输出,避免因阻值偏差导致的电路性能波动。

2. 功率与电压限制

  • 额定功率:62.5mW(0.0625W),适合低功耗电路(如便携式设备、传感器信号处理);
  • 额定工作电压:50V,需注意:实际工作电流需同时满足功率限制(计算得最大允许电流≈40mA),避免因电流过载导致电阻过热失效。

3. 温度特性

  • 温度系数(TCR):±100ppm/℃,即环境温度每变化1℃,阻值变化幅度不超过3.9mΩ(39Ω×100e-6),宽温范围内阻值稳定性优异;
  • 工作温度范围:-55℃~+155℃,覆盖工业级宽温要求,可在极端户外环境(沙漠、寒带)或高温工业场景(电机控制柜)中稳定运行。

三、封装与物理特性

该电阻采用0402封装(英制尺寸,对应公制1005),物理尺寸为1.0mm×0.5mm,具有以下优势:

  • 体积小巧:适合高密度PCB布局(如智能手机、智能手环主板),可有效节省电路空间;
  • 贴片式设计:支持SMT自动化生产,大幅提升量产效率,降低人工成本;
  • 厚膜工艺:通过丝网印刷电阻浆料+高温烧结制成,阻值一致性好,抗冲击、抗振动性能优异。

四、典型应用场景

结合性能参数,CRCW040239R0FKED适用于以下场景:

1. 便携式智能设备

  • 手机、智能手环的音频信号滤波电路、传感器信号放大电路:0402封装节省空间,62.5mW功率匹配低功耗需求,±1%精度保证信号传输质量。

2. 工业控制模块

  • PLC(可编程逻辑控制器)模拟量输入/输出电路、温度传感器信号调理电路:宽温范围(-55~155℃)适应工业现场温度波动,±100ppm/℃的TCR确保温度变化时电路参数稳定。

3. 汽车电子辅助系统

  • 车载摄像头信号处理电路、胎压监测模块电源反馈电路:宽温特性可应对极端天气(高温暴晒、低温严寒),提升系统可靠性。

4. 医疗电子设备

  • 家用血糖仪信号采集电路、便携式心电图机滤波电路:高精度与稳定的温度特性确保医疗数据准确性,符合医疗器械对元器件可靠性的严格要求。

五、品牌与可靠性优势

VISHAY作为全球知名电子元器件厂商,CRCW040239R0FKED具备以下可靠性优势:

  • 符合RoHS、REACH等环保标准,无铅焊接兼容;
  • 批量一致性好,同一批次电阻阻值偏差控制在±1%以内;
  • 经过严格的可靠性测试(如温度循环、湿度老化、振动测试),平均无故障时间(MTBF)达数万小时,适合长期稳定运行的电路。

六、选型与使用注意事项

1. 功率降额设计

实际应用中建议将电阻功率限制在额定值的80%以内(即≤50mW),避免长期过载导致阻值漂移或失效。

2. 焊接工艺要求

  • SMT回流焊:峰值温度控制在240~250℃,焊接时间不超过30秒;
  • 手工焊接:恒温烙铁温度≤350℃,焊接时间≤2秒,避免过热损坏电阻。

3. 静电防护

厚膜贴片电阻对静电敏感,操作时需佩戴防静电手环,使用防静电工作台与包装,避免静电放电击穿电阻。

4. 存储条件

未焊接电阻应存储在温度1535℃、相对湿度40%60%的干燥环境中,存储周期不超过12个月;开封后建议1个月内使用完毕,避免受潮影响性能。

综上,CRCW040239R0FKED凭借高精度、宽温范围、小体积等优势,成为小功率电路设计的理想选择,可满足多领域对稳定可靠电阻元件的需求。

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