WMSIC Electronic Components

FH RC-02K4021FT

ModelRC-02K4021FT
Package0402
BrandFH
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
FH RC-02K4021FT
Type
FH
Minimum package
10000 圆盘

Technical parameters

Power
62.5mW
Electronic Component
Electronic Component
Electronic Component
FH
Electronic Component
RC-02K4021FT
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.022g
Electronic Component
4.02kΩ
Electronic Component
10
Electronic Component
BM0263548198
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.

RC-02K4021FT 厚膜贴片电阻产品概述

一、产品核心定位与基础参数

RC-02K4021FT是一款小功率精密厚膜贴片电阻,主打高密度PCB集成与阻值稳定性,核心参数明确适配多数电子电路需求:

  • 标称阻值:4.02kΩ(4020Ω)
  • 精度等级:±1%(工业级常用精密档,满足模拟电路信号调理的误差要求)
  • 额定功率:62.5mW(低功耗设计,适配电池供电或轻负载场景)
  • 额定工作电压:50V(电压上限,结合功率公式验证:50V/4.02kΩ≈12.4mA,功率≈62.0mW,接近额定值,实际使用建议留10%-20%余量)
  • 温度系数:±100ppm/℃(温度变化对阻值的影响可控,适合宽温环境)
  • 工作温度范围:-55℃~+155℃(覆盖工业级、部分车载非动力模块的温度需求)

二、封装工艺与物理特性

该电阻采用0402封装(英制尺寸:0.04英寸×0.02英寸,公制:1.0mm×0.5mm),是当前贴片电阻中尺寸较小的规格之一,核心优势:

  1. 高密度集成:单位面积PCB可贴装更多电阻,适合智能手机、智能穿戴等小型化设备;
  2. 工艺可靠:采用风华自主成熟的厚膜烧结工艺,通过丝网印刷电阻浆料、高温烧结、电极制作等流程,相比薄膜电阻成本更低,且耐湿、抗腐蚀性能更优;
  3. 焊接兼容性:支持回流焊、波峰焊等主流贴片工艺,焊接后附着力强,不易出现虚焊或脱落问题。

三、电气性能与环境适应性

3.1 阻值稳定性

±1%的精度满足大多数模拟电路的信号分压、限流需求;±100ppm/℃的温度系数在温度变化时漂移极小——例如环境温度从25℃升至100℃(变化75℃),阻值仅变化±4.02kΩ×75×10^-6≈±0.3015Ω,远低于精度允许范围(±40.2Ω)。

3.2 宽温适应性

-55℃~+155℃的工作范围覆盖了:

  • 工业环境(如户外PLC、传感器);
  • 车载信息娱乐系统(非动力模块,一般工作温度≤125℃);
  • 消费电子的极端场景(如夏季高温下的手机)。

3.3 功率与电压约束

需注意功率-电压的相互限制:若工作电压超过50V,即使功率未达62.5mW,也可能因电场强度过高导致电阻失效;反之,若功率超过62.5mW(如电流过大),则可能因过热烧毁。

四、典型应用场景

RC-02K4021FT因小尺寸、低功耗、精密性,广泛应用于以下领域:

  1. 消费电子:智能手机、平板的电源管理电路(电池分压检测、充电限流);智能穿戴设备的传感器信号调理;
  2. 工业控制:PLC的模拟量输入模块(电压信号分压);小型电机驱动的电流采样;
  3. 通信设备:路由器、交换机的射频匹配网络(辅助信号阻抗匹配);光纤收发器的电源滤波;
  4. 汽车电子:车载中控屏的背光调节电路;胎压监测系统(TPMS)的信号放大;
  5. 医疗器械:小型监护仪的心率、血氧信号处理电路(精密分压)。

五、品牌与品质保障

该电阻由风华FH(风华高科) 生产,作为国内电子元器件行业龙头,具备以下优势:

  1. 工艺成熟:厚膜电阻产能超百亿只/年,一致性好,批量采购无性能差异;
  2. 认证齐全:通过ISO9001质量管理体系、IATF16949汽车级认证、RoHS环保认证;
  3. 可靠性验证:产品经过长期负载寿命测试(1000小时额定功率下,阻值变化≤±0.5%)、温度循环测试(-55℃~155℃循环500次,性能无衰减)。

六、选购与使用注意事项

  1. 封装匹配:需确认PCB设计为0402封装焊盘,避免尺寸不匹配导致焊接问题;
  2. 功率余量:实际工作功率建议不超过额定值的80%(即50mW以内),延长使用寿命;
  3. 高温场景:在150℃以上环境使用时,需增加散热设计或适当降低功率;
  4. 采购支持:风华支持小批量样品申请与大批量订单,交货周期一般为1-2周(根据订单量调整)。

RC-02K4021FT凭借小尺寸、高精度、宽温适应性,成为工业控制、消费电子等领域的高性价比选择,能满足多数精密电路的稳定运行需求。

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