WMSIC Electronic Components

Walsin WR04X4703FTL

ModelWR04X4703FTL
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 25+

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
(Walsin) WR04X4703FTL
Type
WALSIN
Unit
Electronic Component
Minimum package
10000 圆盘

Technical parameters

Power
62.5mW
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
(WALSIN)
Electronic Component
WR04X4703FTL
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.012g
Electronic Component
470kΩ
Electronic Component
10
Electronic Component
BM0265429561
Operating Temperature
55℃~+155℃
Operating Voltage
50V
Electronic Component
±100ppm/℃

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

WR04X4703FTL 厚膜电阻产品概述

WR04X4703FTL是华新科(Walsin)推出的一款0402封装厚膜电阻,凭借小尺寸、稳定性能及宽温度范围,成为便携电子、消费电子及工业控制领域的高性价比选择。以下从核心参数、封装规格、性能特性等方面详细介绍。

一、产品核心参数总览

该电阻的核心参数清晰适配常规电子设计需求,关键指标如下:

  • 电阻类型:厚膜电阻(厚膜工艺兼顾成本与性能稳定性);
  • 阻值与精度:阻值编码为「4703」(即470kΩ),精度控制在±1%,满足大多数信号调理、偏置电路的匹配需求;
  • 功率与电压:额定功率1/16W(对应62.5mW),工作电压上限50V,适配低功耗、低压直流电路;
  • 温度特性:温度系数(TCR)±100ppm/℃,即温度每变化100℃,阻值变化±1%,常规环境下稳定性可靠;
  • 工作温度范围:-55℃至+155℃,覆盖工业级极端环境及部分车载场景。

二、封装与尺寸规格

采用0402(英制)/1005(公制) 封装,是当前电子设备中最常用的小型化封装之一:

  • 尺寸参数:英制0.04英寸×0.02英寸(约1.0mm×0.5mm),厚度约0.3mm(行业常规标准);
  • 封装优势:小尺寸适配高密度PCB布局,尤其适合手机、智能穿戴等便携设备的紧凑空间;
  • 焊接兼容性:支持回流焊、波峰焊等SMT工艺,华新科封装工艺成熟,耐焊接热性能符合IEC标准。

三、关键性能特性

  1. 精度与稳定性:±1%的精度可避免信号放大、滤波电路的阻值偏差,减少信号失真风险;
  2. 功率与电压耐受:1/16W额定功率虽小,但适配MCU外围电路、传感器偏置等低功耗场景,50V电压覆盖大多数低压设计;
  3. 温度适应性:-55℃至+155℃的宽温范围,可应对户外工业设备、车载仪表盘等极端温度环境;
  4. 厚膜工艺优势:相比薄膜电阻,厚膜电阻成本更低,抗过载能力稍强,适合大规模量产应用。

四、典型应用场景

因小尺寸、稳定性能,该电阻广泛应用于以下领域:

  1. 便携电子:手机按键电路、智能手环心率传感器偏置电阻、蓝牙耳机信号滤波;
  2. 消费电子:电视背光分压电阻、机顶盒信号调理、路由器射频滤波;
  3. 工业控制:小型PLC传感器模块(温度/压力传感器)的放大偏置电阻;
  4. 汽车电子(常规场景):车载仪表盘背光控制、中控屏低功耗电路(温度覆盖车载内部常规环境);
  5. 通信设备:小型交换机、无线AP的射频偏置电路。

五、可靠性与环境适应性

  1. 抗环境能力:表面涂覆抗湿涂层,可应对潮湿环境(如南方地区、户外设备);
  2. 机械强度:封装结构紧凑,耐振动、冲击性能符合电子设备运输及使用要求;
  3. 环保合规:符合欧盟RoHS标准,不含铅、镉等有害物质,适配绿色设计需求。

六、选型与应用注意事项

  1. 功率降额:实际应用建议功率不超过额定值的70%(约43.75mW),避免过热导致阻值漂移;
  2. 电压限制:严禁超过50V工作电压,否则可能击穿短路;
  3. 温度范围确认:若环境温度超出-55℃~+155℃,需更换更高温级电阻;
  4. 焊接工艺:推荐回流焊(温度曲线符合华新科推荐参数),手工焊接时烙铁温度≤350℃、时间≤3秒;
  5. 存储条件:常温干燥环境(25℃±5℃,湿度≤60%)存储,避免高湿度、高盐雾暴露。

综上,WR04X4703FTL以小尺寸、高性价比及稳定性能,成为电子设备小型化设计的常用电阻之一,可满足多数常规电路的性能需求。

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