WMSIC Electronic Components

FH RC-02K4020FT

ModelRC-02K4020FT
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
FH RC-02K4020FT
Type
FH
Minimum package
10000 圆盘

Technical parameters

Power
62.5mW
Electronic Component
Electronic Component
Electronic Component
FH
Electronic Component
RC-02K4020FT
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.022g
Electronic Component
402Ω
Electronic Component
10
Electronic Component
BM0265105257
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.

风华RC-02K4020FT厚膜贴片电阻产品概述

一、产品核心定位与基础属性

风华RC-02K4020FT是一款工业级厚膜贴片电阻,由国内老牌电子元器件厂商风华电子(FH)出品,针对中小功率、高精度需求设计,适配高密度PCB布局场景,广泛应用于消费电子、工业控制、车载电子等领域的信号调理、分压限流、电源滤波等基础电路。

二、关键性能参数详解

1. 阻值与精度

  • 标称阻值:402Ω(无常规整数倍偏差,满足特定电路的精准匹配需求);
  • 精度等级:±1%(符合工业级电子设备的常规精度要求,如仪器仪表分压电路、传感器信号调理的误差控制);
  • 实际阻值范围:25℃基准温度下为397.98Ω~406.02Ω,可覆盖大多数非超高精度场景的匹配需求。

2. 功率与功耗

  • 额定功率:62.5mW(即1/16W,与0402封装厚膜电阻的功率极限匹配);
  • 适用场景:适配低功耗电路(如可穿戴设备、物联网终端)、信号链路(如音频、数据传输电路),需避免大功率应用(若需更高功率,需选择0603及以上封装)。

3. 温度系数(TCR)

  • 温度系数:±100ppm/℃(即每变化1℃,阻值变化±100×10⁻⁶倍);
  • 稳定性表现:在工作温度范围(-55℃~+155℃)内,最大阻值变化量约为±4.02Ω(按100℃温差计算),可适应工业环境的温度波动(如车载、户外设备)。

4. 工作温度范围

  • 范围:-55℃+155℃(超出一般消费级电子的-40℃+85℃范围,覆盖工业级温度标准);
  • 适用场景:车载电子、工业控制模块、户外传感器节点等高低温环境应用。

三、封装与工艺特点

1. 封装规格

  • 封装类型:0402(英制代码,对应公制尺寸1005,即长1.0mm×宽0.5mm);
  • 核心优势:体积小、重量轻,适合智能手机、可穿戴设备等紧凑PCB设计,可显著提升电路板集成度。

2. 厚膜工艺优势

  • 制造工艺:采用丝网印刷电阻浆料+高温烧结工艺,相比薄膜电阻成本更低、一致性更好;
  • 性能特点:抗浪涌能力强(可承受短时间过流冲击)、长期稳定性高(老化后阻值漂移小),适合量产应用。

四、典型应用场景

  1. 消费电子:智能手机/平板的电源管理电路(电池电压分压检测)、音频信号调理电路(音量控制分压);
  2. 工业控制:PLC输入输出模块(信号分压)、传感器信号调理电路(如温度传感器的参考分压);
  3. 车载电子:车载显示屏背光驱动电路(电流限流)、车身控制模块(BCM)的信号链路;
  4. 可穿戴设备:智能手环/手表的低功耗电路(心率传感器信号调理)、物联网终端的通信模块滤波。

五、可靠性与环境适应性

  1. 长期稳定性:经风华内部老化测试(150℃/1000小时),阻值变化≤0.5%,符合IEC 61000-4-2电磁兼容标准;
  2. 抗环境能力:耐潮湿(85℃/85%RH环境下1000小时阻值变化≤1%)、抗振动(符合IPC-A-610G振动测试要求,10~2000Hz扫频振动);
  3. 焊接兼容性:支持回流焊、波峰焊工艺,与常规FR-4 PCB焊盘兼容,焊接后剪切强度≥5N(符合行业标准)。

六、选型与应用注意事项

  1. 功率降额:实际应用中建议降额使用(环境温度>25℃时,每升高1℃降额0.4%),避免过热导致阻值漂移;
  2. 焊盘设计:0402封装需采用符合IPC-7351标准的焊盘(推荐尺寸:长0.6mm×宽0.3mm),避免虚焊、立碑等缺陷;
  3. 精度匹配:若需更高精度(如±0.1%),需换用风华薄膜电阻系列(如RN系列),本产品±1%满足常规需求。

该产品凭借稳定的性能、紧凑的封装及宽温适应性,成为工业与消费电子领域中小功率电路的高性价比选择。

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