WMSIC Electronic Components

UNI-ROYAL 0402WGF2490TCE

Model0402WGF2490TCE
Package0402
BrandUNI-ROYAL
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
UNI-ROYAL 0402WGF2490TCE
Type
UNI-ROYAL
Minimum package
10000 圆盘

Technical parameters

Power
62.5mW
Electronic Component
Electronic Component
Electronic Component
UNI-ROYAL
Electronic Component
0402WGF2490TCE
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.009g
Electronic Component
249Ω
Electronic Component
10
Electronic Component
BM0263477420
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.

0402WGF2490TCE 厚膜贴片电阻产品概述

一、产品定位与品牌背景

0402WGF2490TCE是UNI-ROYAL(厚声)推出的小型化精密厚膜贴片电阻,核心针对消费电子、工业控制、通信设备等领域的高密度电路板设计需求,兼顾精度、稳定性与成本优势。UNI-ROYAL作为国内被动元器件头部厂商,在厚膜电阻领域拥有20余年生产经验,其产品通过ISO9001、AEC-Q200等认证,广泛应用于国内外中高端电子设备。

二、核心电气性能参数

该电阻的参数设计围绕“小体积、精准度、宽温适应”展开,关键指标如下:

  • 阻值与精度:标称阻值249Ω,精度±1%——属于常规精密级电阻,可满足信号调理、分压电路等对阻值一致性要求较高的场景(如手机音频模块的增益调节);
  • 额定功率:62.5mW——适配0402封装的小功率应用,避免因功率冗余增加PCB空间成本;
  • 最大工作电压:50V——在额定电压范围内可稳定工作,无击穿或电晕风险;
  • 温度系数(TCR):±100ppm/℃——解释:温度每变化1℃,阻值变化≤0.01%(100ppm=0.01%),能适应户外设备、工业现场等温度波动较大的环境;
  • 工作温度范围:-55℃~+155℃——覆盖工业级宽温要求,可在极端环境下长期可靠运行(如车载电子的低温启动场景)。

三、封装与物理特性

采用0402贴片封装(英制:0.04″×0.02″,公制:1.0mm×0.5mm),具有以下实用特点:

  • 尺寸紧凑:适合高密度PCB布局,支持设备小型化(如智能手表的传感器电路);
  • 贴片式结构:兼容自动化贴装生产线,生产效率比插件电阻提升3倍以上;
  • 厚膜工艺:通过丝网印刷电阻浆料+高温烧结而成,相比薄膜电阻成本降低20%左右,且抗机械冲击性能更好(可承受1000g以上振动)。

四、典型应用场景

结合参数特性,该电阻主要应用于以下领域:

  1. 消费电子:智能手机的电源管理模块(分压检测)、平板电脑的音频滤波电路;
  2. 工业控制:传感器前端信号调理(如温度传感器的放大电路)、PLC辅助电路;
  3. 通信设备:路由器的射频匹配电路、基站的电源滤波单元;
  4. 汽车电子:车载信息娱乐系统的背光调节电路、胎压监测模块的辅助电阻。

五、可靠性与环境适应性

厚膜电阻的工艺特性赋予其稳定的可靠性:

  • 抗冲击振动:厚膜层与氧化铝陶瓷基底结合牢固,可通过1000小时振动测试(10~2000Hz,1g);
  • 耐湿耐温:工作温度覆盖-55℃~155℃,且湿度(95%RH,60℃)下阻值漂移≤0.5%;
  • 长期稳定性:经1000小时老化测试后,阻值变化≤0.2%,可满足设备5年以上使用寿命要求。

六、选型与使用注意事项

  • 替代参考:若需替换,可优先选择同品牌同系列的0402封装电阻(如240Ω、250Ω±1%),或主流厂商的0402封装±1%厚膜电阻(需确认功率、TCR匹配);
  • 功率余量:实际应用需保留10%~20%的功率余量(如避免连续工作在62.5mW),防止过热老化;
  • 焊接要求:采用回流焊工艺时,峰值温度需控制在245℃以内(符合JEDEC标准),避免损伤电阻性能。

该产品以“小体积+精准度+高性价比”为核心优势,是高密度电子设备中信号级电路的优选电阻之一。

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