WMSIC Electronic Components

RALEC RTT022R20FTH

ModelRTT022R20FTH
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 RTT022R20FTH
Type
RALEC
Minimum package
10000 圆盘

Technical parameters

Power
62.5mW
Electronic Component
Electronic Component
Electronic Component
RALEC
Electronic Component
RTT022R20FTH
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.009g
Electronic Component
2.2Ω
Electronic Component
1
Electronic Component
BM0265577678
Operating Temperature
55℃~+155℃
Operating Voltage
50V
Electronic Component
±200ppm/℃
Resistor Type
Resistor

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

RALEC旺诠RTT022R20FTH厚膜贴片电阻产品概述

一、产品核心定位与基本属性

RTT022R20FTH是台湾旺诠(RALEC)推出的0402封装厚膜贴片电阻,属于小功率高精度系列,核心设计围绕「紧凑空间下的稳定低阻值应用」展开。其阻值为2.2Ω,精度达±1%,额定功率62.5mW,兼顾了小体积与基础电气性能,适合对PCB密度要求高、功率需求低的电子电路设计。

二、关键电气性能参数详解

2.1 阻值与精度

产品阻值固定为2.2Ω,精度标注为**±1%**,远高于普通厚膜电阻的±5%精度等级。该精度可有效减少电路中因阻值误差导致的信号偏差——例如在电流采样电路中,能提升采样值的准确性,避免后续放大/控制环节的误差累积,适合对参数一致性要求较高的场景。

2.2 功率与工作电压

额定功率为62.5mW(0.0625W),属于小功率贴片电阻范畴;最大工作电压为50V,需注意实际使用中需遵循「功率=电压²/阻值」的换算关系(如2.2Ω下50V对应的功率约1136mW,远超过额定值),因此需按环境温度降额使用(通常每升高10℃,功率降额10%),确保长期可靠性。

2.3 温度系数与温区

温度系数(TCR)为**±200ppm/℃,表示温度每变化1℃,阻值变化百万分之200(即0.02%)。结合工作温度范围-55℃~+155℃**,极端温度下阻值最大漂移约为2.2Ω×200ppm/℃×210℃≈0.0924Ω(±4.2%),在同类0402厚膜电阻中属于稳定水平,可满足工业级/户外场景的温度适应性需求。

三、封装与工艺特性

3.1 封装尺寸

采用0402封装(英制:0.04英寸×0.02英寸;公制:1005,即1.0mm×0.5mm),是贴片电阻中体积最小的规格之一,适合智能手机、智能穿戴、小型传感器等高密度PCB设计场景,可显著提升电路集成度。

3.2 厚膜工艺优势

产品采用厚膜丝网印刷工艺:在氧化铝陶瓷基片上印刷电阻浆料,经高温烧结后形成电阻层,再制作电极与封装。该工艺的核心优势在于:

  • 成本可控,比薄膜电阻更具性价比;
  • 抗机械应力(振动、冲击)与抗潮湿性能优于薄膜电阻;
  • 批量生产一致性好,适合大规模量产需求。

四、环境适应性与可靠性

4.1 宽温区耐候性

工作温度范围覆盖**-55℃~+155℃**,符合工业级设备的环境要求,可应用于户外监控、车载辅助电路(非高温高压场景)等对温度敏感的场合,避免因温度变化导致的性能失效。

4.2 环保与合规

产品符合RoHS 2.0、REACH等国际环保标准,无铅无卤,满足现代电子设备的绿色制造要求,适合出口或高端消费电子领域。

五、典型应用场景

RTT022R20FTH的小体积、高精度与宽温特性,使其适用于以下场景:

  1. 便携式电子:智能手机、智能手环的电源管理电路(电流采样、限流)、蓝牙模块的信号调理;
  2. 工业控制:小型传感器(如温度、压力传感器)的前端分压电路、低功率PLC的辅助信号回路;
  3. 消费电子:无线耳机的充电电路限流、智能家居设备的传感器接口;
  4. 汽车电子(辅助级):仪表盘小模块的指示灯限流、车载USB接口的过流保护辅助电阻。

六、品牌与品质保障

RALEC旺诠是台湾老牌被动元件制造商,专注电阻、电容等产品研发生产超过30年,产品广泛应用于消费电子、工业、汽车等领域。RTT022R20FTH继承了旺诠的厚膜电阻工艺优势,批量一致性好,长期可靠性经行业验证,适合对品质有稳定要求的量产项目。

该产品通过了基础的可靠性测试(如高温存储、温度循环、振动测试),可满足大多数中低端电子设备的性能需求,是小功率低阻值场景下的高性价比选择。

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