WMSIC Electronic Components

Walsin WR04X22R0FTL

ModelWR04X22R0FTL
Package0402
Brand(Walsin)
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
(Walsin) WR04X22R0FTL
Type
WALSIN
Minimum package
10000 圆盘

Technical parameters

Power
62.5mW
Electronic Component
Electronic Component
Electronic Component
(WALSIN)
Electronic Component
WR04X22R0FTL
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.012g
Electronic Component
22Ω
Electronic Component
10
Electronic Component
BM0264396908
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.

华新科WR04X22R0FTL厚膜片式电阻产品概述

华新科(Walsin)作为全球无源电子元件领域的知名厂商,其推出的WR04X22R0FTL是一款针对高密度电路设计优化的0402封装厚膜片式电阻。该产品凭借稳定的电气性能、紧凑的体积及宽温适应性,成为消费电子、工业控制等领域的常用基础元件,兼顾成本与性能平衡。

一、产品核心身份与定位

WR04X22R0FTL属于华新科厚膜电阻系列,型号编码明确其核心特征:

  • WR:厚膜片式电阻标识;
  • 04:对应0402封装(英制0.04×0.02英寸,公制1.0×0.5mm);
  • 22R0:标称阻值22Ω;
  • FTL:组合标识(对应±1%精度、±100ppm/℃温度系数)。

该产品定位于中精度、小功率、宽温域的基础无源元件,适配对体积敏感且需稳定阻值的电路设计,是批量应用的高性价比选择。

二、关键电气性能参数详解

1. 阻值与精度

标称阻值22Ω,精度±1%,属于工业级常用精度等级。相比±5%的通用电阻,其阻值偏差更小,可满足信号调理、分压网络、限流保护等对阻值稳定性要求较高的场景(如电池电量检测电路的分压比精度需求)。

2. 功率与功率限制

额定功率62.5mW(即1/16W),是0402封装电阻的典型功率等级。实际使用需注意:功率需同时满足P=I²R≤62.5mW,计算得最大允许电流约53.3mA(√(62.5mW/22Ω));若仅看工作电压50V,直接施加50V会导致功率超113mW(50²/22≈113mW),需结合电路工况平衡电压与电流。

3. 工作电压与温度系数

  • 工作电压:50V(额定值),指电路中施加的直流/交流电压峰值不超过50V,避免绝缘击穿;
  • 温度系数(TCR):±100ppm/℃,表示温度每变化1℃,阻值变化百万分之一百。在-55℃+155℃范围内,阻值最大变化量为22Ω×100ppm×210℃≈0.46Ω,即阻值稳定在21.5422.46Ω,满足工业环境长期稳定性。

三、物理尺寸与封装特性

封装为0402(公制1.0×0.5mm),是贴片电阻中体积最小的主流封装之一,适配高密度PCB设计(如智能手机主板、智能手表传感器模块)。厚膜工艺的优势在于:

  • 成本低于薄膜电阻,适合批量应用;
  • 抗机械应力与环境冲击能力优于碳膜电阻;
  • 阻值范围宽(几Ω到几MΩ),覆盖多数场景。

四、环境适应性与可靠性

1. 宽温工作范围

  • 工作温度:-55℃+155℃,覆盖工业级(-55+125℃)与部分汽车级(-40~+125℃)环境,适配低温户外设备、高温工业控制器;
  • 存储温度:-65℃~+150℃(华新科常规规格),满足运输仓储的温度波动。

2. 可靠性验证

华新科对该产品完成多项测试:

  • 高温存储(+155℃/1000h):阻值变化≤0.5%;
  • 温度循环(-55~+155℃/1000次):阻值变化≤0.3%;
  • 湿度测试(85℃/85%RH/1000h):阻值变化≤1%;
  • 抗浪涌:可承受2倍额定功率的10ms脉冲,避免瞬间过流损坏。

五、典型应用场景

  1. 消费电子:智能手机音频信号调理、电池电量检测分压、摄像头限流;
  2. 工业控制:PLC接口下拉电阻、传感器前端信号匹配、电机驱动电流采样;
  3. 物联网:低功耗传感器节点信号链路、蓝牙/WiFi阻抗匹配;
  4. 汽车电子:车载中控按键接口、胎压监测分压(需确认汽车级认证)。

六、选型与使用注意事项

  1. 功率匹配:实际功率≤62.5mW,最大电流≤53.3mA,避免过热;
  2. 焊接工艺:采用回流焊(预热150180℃/60120s,峰值240260℃/1020s),避免手工虚焊;
  3. 精度适配:若需±0.1%高精度,需换薄膜电阻;
  4. 静电防护:0402封装敏感,需防静电措施(ESD手环、防静电包装)。

综上,WR04X22R0FTL凭借紧凑体积、稳定性能与宽温适应性,成为高密度电路设计的可靠选择,广泛适配消费电子、工业控制等领域的基础电阻需求。

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