WMSIC Electronic Components

RALEC RTT028660FTH

ModelRTT028660FTH
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

13 specifications

Core information

Product name
RALEC RTT028660FTH
Type
RALEC
Minimum package
10000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RALEC
Electronic Component
RTT028660FTH
Electronic Component
1
Package
0402
Electronic Component
0.009g
Electronic Component
50
Electronic Component
BM0265966484
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.

RALEC RTT028660FTH 厚膜贴片电阻产品概述

RALEC RTT028660FTH是旺诠(RALEC)针对小功率精密电路推出的0402封装厚膜贴片电阻,核心定位为高密度PCB设计中的分压、限流、阻抗匹配等场景,具备高阻值精度、宽温适应性等实用特性,是消费电子、工业控制等领域的常规选型。

一、产品核心特性

该电阻围绕“小体积+高稳定+宽温域”设计,核心特性包括:

  1. 阻值精度达±1%,满足一般精密信号调理需求;
  2. 工作温区覆盖-55℃~+155℃,适配极端环境;
  3. 温度系数(TCR)±100ppm/℃,有效降低温漂影响;
  4. 0402封装(公制1005),适配高密度PCB布局;
  5. 额定功率62.5mW(1/16W),匹配小功率电路场景;
  6. 符合RoHS无铅标准,适配环保型产品设计。

二、基础参数详解

参数项 规格值 关键说明 电阻类型 厚膜贴片电阻 采用陶瓷基底+丝网印刷电阻浆料工艺,平衡稳定性与成本 标称阻值 866Ω 非标准系列阻值,适配特定分压比或阻抗匹配需求(如射频电路的阻抗调整) 精度 ±1% 实际阻值偏差≤±8.66Ω,满足工业控制、消费电子的常规精密要求 额定功率 62.5mW(1/16W) 0402封装典型功率等级,高温环境需降额(如125℃时降额至50%,即31.25mW) 额定电压 50V 需同时满足电压≤50V与功率≤62.5mW,实际应用优先限制功率 温度系数(TCR) ±100ppm/℃ 温度每变化1℃,阻值变化±0.0866Ω;-55~155℃范围内最大变化≈±18.2Ω 工作温度 -55℃~+155℃ 覆盖汽车电子、工业户外设备等极端温区需求

三、封装与工艺优势

1. 0402封装适配高密度设计

  • 尺寸仅1.0mm×0.5mm(英制),可大幅提升PCB单位面积的元件密度;
  • 焊盘尺寸兼容标准0402焊盘(长1.21.4mm,宽0.60.8mm),适配回流焊、波峰焊工艺。

2. 厚膜工艺的性能平衡

  • 陶瓷基底(如氧化铝)提升热稳定性,避免阻值漂移;
  • 激光调阻实现±1%精度,相比薄膜电阻成本降低30%以上,相比碳膜电阻稳定性提升50%;
  • 环氧树脂涂层增强抗湿性,符合IEC 60068-2-67(湿热试验)标准。

四、典型应用场景

该电阻因小体积、宽温特性,广泛用于以下领域:

  1. 消费电子:智能手机射频前端分压电路、智能穿戴设备传感器信号放大、蓝牙耳机电源反馈;
  2. 工业控制:PLC输入输出模块限流、工业传感器(温度/压力)信号调理、小型电机驱动辅助电路;
  3. 通信设备:小型基站射频阻抗匹配、路由器电源分压、物联网终端信号滤波;
  4. 汽车电子:车载信息娱乐系统信号调理、车身控制模块(BCM)辅助电路(需确认车规版本适配性)。

五、可靠性与环境适应性

  1. 长期稳定性:满额功率下1000小时阻值漂移≤0.5%,满足工业设备5年以上寿命要求;
  2. 抗振动冲击:0402封装焊接后抗振动性能(10~2000Hz,1g)符合MIL-STD-202标准,适配车载、手持设备;
  3. 耐温性:高温155℃下持续工作1000小时,阻值变化≤1%;低温-55℃下无开裂、阻值突变。

六、选型与使用注意事项

  1. 功率降额:环境温度25℃时建议降额至80%(≤50mW),100℃以上降额至50%(≤31.25mW);
  2. 电压限制:避免直接施加50V电压(866Ω时功率≈2.89W,远超额定),需结合功率计算实际电压;
  3. 温漂评估:若应用场景温度波动≥100℃(如-40~+60℃),需确认阻值变化(±0.0866×100≈±8.66Ω)是否影响电路精度;
  4. 焊接工艺:回流焊温度峰值建议240~250℃,避免高温导致电阻浆料老化。

RALEC RTT028660FTH凭借高性价比、宽温适应性与小体积优势,成为小功率精密电路的实用选型,可满足多数消费电子、工业控制场景的核心需求。

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