WMSIC Electronic Components

TA-I Technology RM04JTN472

ModelRM04JTN472
Package0402
BrandElectronic Component
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 Option 66627

Availability on request

Technical data

Product details

18 specifications

Core information

Product name
RM04JTN472
Type
TA-I Technology
Minimum package
10000 圆盘

Technical parameters

Power
62.5mW
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RM04JTN472
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±5%
Electronic Component
0.009g
Electronic Component
4.7kΩ
Electronic Component
50
Electronic Component
BM0265635402
Electronic Component
±200ppm/℃
Electronic Component
Electronic Component
Electronic Component
10000

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

RM04JTN472 片式厚膜电阻产品概述

一、产品基本定位与核心属性

RM04JTN472是大毅科技(Tai-Yi Technology) 推出的0402封装表面贴装(SMD)厚膜电阻,专为小型化、高密度贴装的电子设备设计。产品采用无铅厚膜工艺制造,符合RoHS 2.0、REACH等全球环保标准,兼顾成本与可靠性,是消费电子、IoT终端等领域的基础电阻优选方案。

二、封装与尺寸规格

0402封装为行业通用小型化规格,具体尺寸如下:

  • 英制:0.04英寸(长)×0.02英寸(宽)
  • 公制:1.0mm(长)×0.5mm(宽)
  • 厚度:0.3±0.05mm(适配标准贴装焊盘,符合IPC-A-610工艺规范)

该封装支持高速贴装,可大幅提升PCB板的元件密度,适合手机、可穿戴设备等对体积敏感的产品。

三、电气性能关键参数

3.1 阻值与精度

标称阻值为4.7kΩ(标识代码“472”,即47×10²Ω),精度±5%(E24系列阻值公差,对应“J”档)。批量生产中阻值一致性优于标称精度,可减少电路调试复杂度。

3.2 功率与额定电压

  • 最大功耗:62.5mW(1/16W),为该封装电阻的典型低功耗规格;
  • 额定工作电压:50V。需注意:实际应用中需同时满足「功耗≤62.5mW」和「电压≤50V」两个约束(例如:当电压为50V时,理论功耗达50²/4700≈531mW,远超过额定功耗,因此实际安全电压上限约为√(0.0625×4700)≈17.1V,需结合电路工况取小值)。

3.3 温度系数(TCR)

温度系数为**±200ppm/℃**,表示在-55℃~+125℃范围内,阻值随温度变化的速率为每摄氏度±0.02%。举例:

  • 25℃时阻值4.7kΩ,100℃时阻值≈4700×(1+75×200e-6)=4770.5Ω;
  • -55℃时阻值≈4700×(1-80×200e-6)=4624.8Ω;
    阻值变化控制在±1.6%以内,满足一般电子电路的温度稳定性需求。

四、环境适应性与可靠性

4.1 工作温度范围

-55℃~+125℃,覆盖消费电子(如户外IoT终端)、工业级基础应用(如车载辅助电路)的温度场景。

4.2 焊接与可靠性测试

  • 耐焊接热:可承受260℃回流焊30秒(符合J-STD-020标准),无铅焊接工艺下无开裂、阻值漂移风险;
  • 长期可靠性:经1000小时高温高湿(85℃/85%RH)测试后,阻值变化≤±1%,符合大毅科技内部可靠性规范,确保产品生命周期内性能稳定。

五、典型应用场景

RM04JTN472的小封装、低功耗特性,使其适配以下场景:

  • 消费电子:智能手机音频滤波、可穿戴设备传感器偏置电路;
  • IoT终端:智能家居节点(温湿度传感器模块)、蓝牙信标信号衰减电路;
  • 小型电源:5V/3.3V DC-DC转换模块反馈电阻、LED驱动限流电阻(低功耗场景);
  • 车载辅助电路:车载信息娱乐系统背光控制电路(需确认具体批次是否通过AEC-Q200,基础款可满足一般车载需求)。

六、品牌与品质保障

大毅科技作为专业被动元器件制造商,RM04JTN472具备:

  • 工艺一致性:厚膜印刷工艺稳定,批量阻值偏差远低于±5%标称值;
  • 环保合规:无铅、无卤素,适配全球市场准入;
  • 供应稳定:成熟产能布局,可满足中大规模量产需求,交期可控。

总结

RM04JTN472凭借小封装、稳定的电气性能及高可靠性,成为小型化电子设备中基础电阻的高性价比选择,尤其适合对体积、成本敏感的电路设计。

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