WMSIC Electronic Components

RALEC RTT03R470FTP

ModelRTT03R470FTP
Package0603
BrandRALEC
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
RALEC RTT03R470FTP
Type
RALEC
Minimum package
5000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
RALEC
Electronic Component
RTT03R470FTP
Electronic Component
1
Package
0603
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.023g
Electronic Component
470mΩ
Electronic Component
1
Electronic Component
BM0265577675
Operating Temperature
55℃~+155℃
Electronic Component
±200ppm/℃
Resistor Type
Resistor
Electronic Component
Electronic Component

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

RTT03R470FTP 贴片厚膜电阻产品概述

一、产品基本属性

  • 品牌:RALEC(旺诠)——台湾老牌电子元器件制造商,专注电阻类产品研发生产超30年,工艺成熟且品控稳定;
  • 类型:厚膜贴片电阻(陶瓷基片+厚膜电阻浆料烧结而成);
  • 封装:0603(英制封装代码,对应公制尺寸1.6mm×0.8mm)——体积小巧,适配自动化表面贴装(SMT)生产线,适合高密度电路设计;
  • 型号定义:RTT(旺诠厚膜电阻系列)+ 03(0603封装)+ R470(阻值470mΩ,“R”代表小数点)+ FTP(精度±1%、温漂±200ppm/℃等级)。

二、核心性能参数解析

1. 阻值与精度

标称阻值470mΩ(0.47Ω),精度**±1%**——低阻值设计是电流采样场景的核心优势,±1%精度可满足多数中低端工业控制、消费电子电路的阻值一致性要求,无需额外校准即可实现基本功能(如小电流回路的精准检测)。

2. 功率额定值

额定功率100mW(0.1W)——小功率设计适配低功耗电路(如便携式设备、小型传感器节点),避免大电流下的功率冗余;实际使用需注意功率降额(环境温度超过70℃时需降低功率,155℃时降额至约50mW)。

3. 温度系数(TCR)

±200ppm/℃——表示温度每变化1℃,阻值变化约0.02%;在工作温度范围-55℃~+155℃内,极端温度下最大阻值漂移为±4.2%(200ppm/℃×210℃),属于厚膜电阻的常规温漂范围,适合温度波动较大的场景。

4. 工作温度范围

-55℃~+155℃——宽温设计覆盖户外、车载等极端环境(如汽车辅助电路、工业传感器户外节点),经高低温循环测试(-55℃至155℃循环100次)后,阻值变化不超过±0.5%。

三、典型应用场景

1. 电源电路电流采样

470mΩ低阻值可作为DC-DC转换器、电池管理系统(BMS)小电流回路的采样电阻:1A电流下采样压降仅0.47V,不影响电源输出稳定性,同时避免采样电阻自身功耗过大。

2. 便携式设备限流保护

适配手机、智能手环等便携设备的信号电路限流:100mW功率满足低功耗需求,可防止过流损坏MCU、传感器等敏感元器件。

3. 工业控制信号调节

宽温性能适合PLC输入/输出接口、小型电机启动电路:在工业现场温度波动(-20℃~+85℃)下,阻值漂移小,保障信号传输一致性。

4. 消费电子分压网络

低阻值配合高阻值电阻实现音频音量调节、显示亮度控制:精准分压可优化小信号电路的输出特性,避免信号失真。

四、品牌与可靠性优势

  • 工艺可靠性:采用丝网印刷+高温烧结工艺,电阻膜层均匀性好,长期使用阻值漂移率≤0.1%/1000小时(符合IEC 61000-4-2静电防护标准);
  • 封装防护:0603封装采用陶瓷基片+环氧树脂涂层,耐机械应力、抗潮湿能力强,可通过无铅回流焊(260℃峰值温度10秒内);
  • 环保合规:符合RoHS 2.0、REACH等环保标准,无铅无卤,适配出口产品需求。

五、选型与使用注意事项

  1. 功率降额:环境温度>70℃时,实际功率需按“每升高1℃降额0.1%”计算(如125℃时降额至60%,即60mW);
  2. 焊接规范:无铅回流焊峰值温度≤260℃,手工焊接烙铁温度≤350℃(焊接时间≤3秒),避免烫伤电阻膜层;
  3. 静电防护:厚膜电阻对静电敏感(ESD阈值≥2kV),需在防静电环境下操作(佩戴手环、使用防静电工作台);
  4. 存储条件:未开封产品存储于0℃~40℃、湿度≤60%环境,开封后3个月内使用完毕,避免受潮影响焊接性能。

总结

RTT03R470FTP作为RALEC旺诠的经典0603封装厚膜电阻,以低阻值、宽温、高一致性为核心优势,适配电源采样、便携设备限流、工业控制等多场景,兼具品牌可靠性与成本竞争力,是中低端电子电路设计的常用选型之一。

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