WMSIC Electronic Components

FH RC-02K5490FT

ModelRC-02K5490FT
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-02K5490FT
Type
FH
Minimum package
10000 圆盘

Technical parameters

Power
62.5mW
Electronic Component
Electronic Component
Electronic Component
FH
Electronic Component
RC-02K5490FT
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.022g
Electronic Component
549Ω
Electronic Component
10
Electronic Component
BM0265668847
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.

FH风华RC-02K5490FT厚膜贴片电阻产品概述

一、产品核心身份与定位

FH风华RC-02K5490FT是一款0402封装厚膜贴片电阻,属于风华电子常规精度、小功率电阻产品线的核心型号。该型号针对通用电子电路的基础电阻需求设计,兼顾成本与性能,广泛适配消费电子、工业控制、通信等领域的批量应用,是替代传统插件电阻、实现PCB小型化的理想选择。

二、基础参数解析

该型号核心参数覆盖电阻性能的关键维度,具体如下:

  1. 封装与尺寸:0402封装(英制代码,对应公制1.0mm×0.5mm),属于小型贴片封装,可显著提升PCB布局密度,适配便携设备的紧凑设计;
  2. 电阻类型:厚膜电阻(厚膜印刷工艺),相比碳膜电阻稳定性更强,相比薄膜电阻成本更低,平衡了性能与经济性;
  3. 阻值与精度:标称阻值549Ω,精度±1%——实际阻值范围为543.51Ω~554.49Ω,满足大多数电路对阻值偏差不敏感的基础应用(如分压、限流、基础电流采样);
  4. 功率规格:1/16W(即62.5mW),最大允许功耗62.5mW,对应最大工作电流约10.7mA(公式:(I=\sqrt{P/R})),适配低功耗电路的电流需求;
  5. 温度系数(TCR):±100ppm/℃——环境温度每变化1℃,阻值变化量为0.0549Ω,处于厚膜电阻常规水平,能应对多数温区变化场景;
  6. 工作温度范围:-55℃+155℃,超出工业级标准(-40℃+85℃),可适应严苛高低温环境(如户外设备、高温工业模块)。

三、封装与工艺特点

  1. 0402封装优势:体积小、重量轻,支持PCB高密度贴装,降低整机体积与重量(适配智能手表、蓝牙耳机等便携设备);无引脚设计抗振动性能优于插件电阻,适合车载、工业振动环境;
  2. 厚膜工艺特性:采用厚膜印刷+高温烧结工艺,在陶瓷基板上制作电阻层,具有稳定性好、耐老化、抗冲击等特点;相比薄膜电阻,工艺成本更低,适合大规模量产;
  3. 环保与可靠性:符合RoHS 2.0及REACH标准,无铅无镉;经过温度循环、湿度试验、振动试验等可靠性测试,批量应用一致性达标。

四、典型应用场景

该型号因参数适配性强,覆盖多领域基础电路需求:

  1. 消费电子:智能手机电源管理模块的电压分压(电池检测)、智能穿戴传感器接口的限流电阻;
  2. 工业控制:PLC数字接口的限流电阻、小型传感器(温湿度/压力)的信号调理电阻;
  3. 通信设备:路由器以太网接口的信号匹配电阻、小型基站射频前端低功率辅助电路;
  4. 物联网节点:智能传感器供电限流、蓝牙模块偏置电阻;
  5. 车载电子(低功率):车门控制模块、仪表盘低功耗电路(温区适配车内高温环境)。

五、品牌与质量保障

风华电子(FH)是国内老牌被动元件制造商,专注电阻/电容研发数十年,厚膜电阻产品线覆盖全封装与阻值,产能稳定;RC-02K5490FT每批次均经过出厂检测,阻值一致性符合±1%要求,同时提供OEM/ODM厂商的批量采购支持与技术售后。

六、选型与替换建议

  1. 直接替换:同参数竞品(国巨0402 549Ω±1%、三星CL05 549Ω±1%)可兼容;
  2. 精度升级:需更高精度(±0.1%)则切换至薄膜电阻(如风华RC-03 549Ω±0.1%),成本上升;
  3. 功率升级:需1/8W功率则换0603封装(如风华RC-06 549Ω±1% 1/8W),体积略有增加。

该型号凭借小体积、高可靠性与成本优势,成为通用电子电路的基础电阻优选,适用于对精度、功率要求适中的批量应用场景。

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