WMSIC Electronic Components

TA-I RM04FTN4702

ModelRM04FTN4702
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RM04FTN4702
Type
TA-I Technology
Minimum package
10000 圆盘

Technical parameters

Power
62.5mW
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RM04FTN4702
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.009g
Electronic Component
47kΩ
Electronic Component
1
Electronic Component
BM0259314148
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.

RM04FTN4702 厚膜贴片电阻产品概述

RM04FTN4702是大毅科技推出的一款小型化厚膜贴片电阻,采用0402封装(英制尺寸,对应公制1005),专为高密度、小型化电子电路设计,兼顾精度、功率与环境适应性,广泛适配消费电子、工业控制等多领域应用。

一、产品基本信息

该型号属于大毅科技厚膜贴片电阻系列,型号命名规则清晰:“RM04”对应0402封装,“FT”代表厚膜工艺,“N”为精度标识(±1%),“4702”则表示阻值为47kΩ(47×10²Ω)。产品延续大毅科技被动元件的可靠性设计,符合RoHS环保标准,无铅端电极满足现代电子制造需求,可直接兼容主流SMT产线。

二、核心参数详解

RM04FTN4702的核心参数针对通用精密电路需求优化,关键指标及实际意义如下:

  1. 阻值与精度:标称阻值47kΩ,精度±1%,可满足多数信号调理、分压电路的精度要求,避免因阻值偏差导致的电路性能波动(如基准电压偏移、信号增益误差);
  2. 功率与电压:额定功率62.5mW,最大工作电压50V。需注意实际使用时,功率功耗不得超过额定值,且电路施加电压需同时满足“电压²/阻值≤额定功率”的约束(如47kΩ电阻在50V下功耗约53mW,未超额定值);
  3. 温度系数:±100ppm/℃,即温度每变化1℃,阻值变化量为47kΩ×100×10⁻⁶=4.7Ω,在-55℃~+155℃范围内阻值稳定性良好,可减少温度变化对电路性能的影响;
  4. 工作温度范围:覆盖-55℃至+155℃,满足工业级环境的高低温变化需求,可适配户外、车载等复杂场景的辅助电路。

三、封装与工艺特性

  1. 小型化封装:0402封装尺寸为1.0mm(长)×0.5mm(宽)×0.35mm(高),适配高密度PCB布局,可有效缩小电路体积,适合手机、智能穿戴等便携设备的小型化设计;
  2. 厚膜工艺优势:采用丝网印刷+高温烧结工艺制备电阻层,相比薄膜电阻成本更具竞争力,且厚膜电阻层与陶瓷基板结合牢固,耐机械应力、耐潮湿性能更优;
  3. 可靠端电极:端电极采用“银层+镍层+锡层”三层结构,银层保证导电性能,镍层防止银迁移(避免长期使用后接触电阻增大),锡层适配无铅焊接,焊接后接触电阻低,可靠性符合JESD22等行业标准。

四、典型应用场景

RM04FTN4702因尺寸小、精度适中,广泛应用于以下场景:

  1. 消费电子:手机、平板的电源管理模块(如分压检测、基准电路)、音频信号调理电路;
  2. 工业控制:小型PLC的输入输出接口、传感器信号放大电路、温度监测电路;
  3. 汽车电子:车载辅助电路(如仪表盘背光控制、传感器接口),适配-40℃~+125℃的车载环境;
  4. 通信设备:小型基站、路由器的射频前端偏置电路、信号滤波辅助电路;
  5. 医疗电子:便携式医疗设备(如血糖监测仪、血氧仪)的信号采集电路,满足低功耗、小型化需求。

五、可靠性与使用注意事项

  1. 可靠性验证:产品通过高温存储(155℃×1000小时)、温度循环(-55℃~+155℃×1000次)、湿度测试(85℃/85%RH×1000小时)等可靠性试验,符合IEC 60115-1电阻器通用标准,额定功率下工作寿命可达10000小时以上;
  2. 功率降额建议:环境温度超过125℃时,需按70%额定功率降额使用,避免因热应力导致阻值漂移;
  3. 焊接要求:遵循0402封装焊接规范,回流焊峰值温度不超过260℃(持续时间≤10秒),波峰焊温度不超过245℃,防止封装损坏;
  4. 存储条件:存储环境温度10℃~35℃,相对湿度≤60%,避免长期暴露于高湿、高温环境,存储期不超过12个月,开封后建议1个月内使用完毕。

RM04FTN4702凭借小型化、高可靠性与成本优势,成为通用精密电路设计的优选被动元件之一,可满足多数电子设备的小型化、轻量化需求。

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