WMSIC Electronic Components

RALEC RTT021822FTH

ModelRTT021822FTH
Package0402
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 RTT021822FTH
Type
RALEC
Minimum package
10000 圆盘

Technical parameters

Power
62.5mW
Electronic Component
Electronic Component
Electronic Component
RALEC
Electronic Component
RTT021822FTH
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.009g
Electronic Component
18.2kΩ
Electronic Component
10
Electronic Component
BM0265617513
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.

RTT021822FTH 厚膜贴片电阻产品概述

RTT021822FTH是台湾旺诠电子(RALEC)推出的一款0402封装厚膜贴片电阻,定位于小体积、高稳定性的通用型电阻元件,可满足消费电子、工业控制、汽车电子等多领域的低功耗电路设计需求,以下从核心参数、工艺特性、应用场景等维度展开详细概述。

一、核心性能参数详解

该电阻的关键参数明确且适配多数常规电路场景,具体如下:

  1. 阻值与精度:标称阻值18.2kΩ,精度±1%——该精度等级可覆盖信号调理、分压、滤波等基础电路的参数一致性要求,避免因阻值偏差导致的信号失真或功率损耗异常;
  2. 功率与电压:额定功率62.5mW,最大工作电压50V——通过欧姆定律验证:50V电压下工作电流约2.74mA(I=V/R=50V/18.2kΩ≈2.74mA),对应功率P=I²R≈2.53mW,远低于额定功率,说明电压限制(50V)是实际工作的主要边界(而非功率),适合低电流、中电压场景;
  3. 温度特性:温度系数(TC)±100ppm/℃,工作温度范围-55℃~+155℃——TC值表示温度每变化1℃,阻值变化万分之一(0.01%),环境温度变化100℃时阻值偏差仅±1%,与精度等级匹配;宽温范围适配汽车仪表盘、工业传感器等恶劣环境;
  4. 封装尺寸:0402英制封装(公制约1.0mm×0.5mm×0.35mm)——小体积支持高密度PCB布局,适合穿戴设备、小型通信模块等空间敏感产品。

二、工艺与可靠性优势

RTT021822FTH采用厚膜电阻工艺,相比薄膜电阻成本更低、批量一致性更好,核心优势体现在:

  1. 工艺稳定性:电阻浆料印刷在氧化铝陶瓷基板上,经高温烧结形成致密电阻层,避免薄膜电阻易受腐蚀的问题,长期使用阻值漂移小;
  2. 环保合规:符合RoHS 2.0、REACH等国际标准,不含铅、镉等有害物质,适配全球市场准入;
  3. 品牌背书:旺诠(RALEC)通过ISO 9001认证,批量生产参数一致性达千分之几水平,适合量产需求。

三、典型应用场景

结合参数特性,该电阻主要适用于以下场景:

  1. 消费电子:智能手机、智能手表的电源管理模块(电池分压检测)、音频信号调理电路;
  2. 工业控制:小型PLC输入输出接口、传感器信号滤波电路;
  3. 汽车电子:车载仪表盘背光调节、胎压传感器接口(适配-40℃~+85℃车载环境);
  4. 通信设备:小型基站、路由器的信号分压、阻抗匹配电路(小体积支持高密度模块)。

四、使用注意事项

为保障电路可靠性,需注意以下几点:

  1. 功率与电压限制:实际功率不得超62.5mW,电压不得超50V,避免过热导致阻值漂移;
  2. 焊接规范:采用回流焊工艺,温度曲线符合J-STD-020(峰值240℃~260℃,时间≤10秒),避免手工焊接虚焊;
  3. 环境适配:长期工作在125℃以上时,建议降额20%,延长寿命;
  4. 静电防护:生产中佩戴防静电手环,使用防静电包装。

五、选型对比参考

若需替换或扩展,可参考:

  • 同精度/封装:RALEC RTT02系列其他阻值(如10kΩ、22kΩ);
  • 同功率/更高精度:薄膜电阻(成本更高);
  • 低功耗场景:0201封装(功率降至30mW左右)。

综上,RTT021822FTH是一款性价比高、稳定性强的通用型厚膜贴片电阻,适配多领域低功耗电路设计,是高密度PCB布局的理想选择。

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