WMSIC Electronic Components

RALEC RTT054991FTP

ModelRTT054991FTP
Package0805
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 RTT054991FTP
Type
RALEC
Minimum package
5000 圆盘

Technical parameters

Power
125mW
Electronic Component
Electronic Component
Electronic Component
RALEC
Electronic Component
RTT054991FTP
Electronic Component
1
Package
0805
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.027g
Electronic Component
4.99kΩ
Electronic Component
1
Electronic Component
BM0265147825
Operating Temperature
55℃~+155℃
Operating Voltage
150V
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.

RTT054991FTP 厚膜贴片电阻产品概述

RTT054991FTP是台湾旺诠(RALEC)推出的一款0805封装厚膜贴片电阻,针对中高精度小功率电路场景设计,兼顾性能稳定性与成本可控性,广泛适配消费电子、工业控制、汽车电子等领域的通用需求。

一、产品核心身份与定位

该电阻属于旺诠常规贴片电阻系列,以厚膜工艺为核心制造技术,重点满足对阻值精度(±1%)、温度稳定性(±100ppm/℃)及宽温适应性(-55℃~+155℃)有要求的小信号电路。其封装尺寸符合0805国际标准,适配自动化贴装产线,适合批量生产应用。

二、关键电气参数详解

2.1 阻值与精度

标称阻值为4.99kΩ,精度等级±1%,属于中高精度电阻范畴。该精度可满足大多数模拟电路的分压、限流需求(如运算放大器的反馈网络、ADC参考电压分压),无需额外校准即可实现基础功能的稳定输出。

2.2 功率与电压能力

  • 额定功率:125mW,适配小功率信号电路(如传感器信号调理、微控制器I/O口限流),避免功率过载风险;
  • 工作电压:150V,在0805封装电阻中属于较高电压等级,可兼容部分中低压电源电路(如5V/12V系统的辅助分压),拓宽应用场景。

2.3 温度系数(TCR)

温度系数为**±100ppm/℃**,含义为:当环境温度每变化1℃时,阻值变化量为标称值的百万分之一百。以4.99kΩ为例,温度从25℃升至125℃(变化100℃),阻值变化约±0.499Ω,稳定性满足工业级电路的宽温要求。

三、物理与封装特性

3.1 封装尺寸

采用0805封装(国际标准尺寸:2.0mm×1.2mm×0.5mm),体积小巧,适合便携设备(如智能手机、智能手环)的高密度PCB布局,同时兼容常规贴装设备的生产效率。

3.2 厚膜工艺优势

厚膜电阻通过丝网印刷、烧结等工艺制造,相比薄膜电阻成本更低,且具有较好的抗机械应力能力;相比碳膜电阻,温度稳定性与功率承载能力更优,属于“性能-成本”均衡的主流工艺选择。

四、环境适应性与可靠性

4.1 宽温工作范围

工作温度覆盖**-55℃+155℃**,超出常规商业级(0℃70℃)与工业级(-40℃~125℃)标准,可适配高温环境(如汽车发动机舱、工业烤箱附近电路)或低温环境(如北方户外设备)。

4.2 可靠性验证

产品通过旺诠标准可靠性测试:

  • 耐湿测试(85℃/85%RH,1000小时):阻值变化率≤±1%;
  • 温度循环测试(-55℃~+155℃,1000次循环):阻值变化率≤±0.5%;
  • 抗浪涌测试(2倍额定电压,10次):无开路/短路故障。

五、典型应用场景

5.1 消费电子

  • 智能手机/平板:音频电路分压、触控IC限流、电池管理辅助电阻;
  • 智能家居:智能插座、传感器节点的信号调理电路。

5.2 工业控制

  • PLC(可编程逻辑控制器):模拟量输入/输出模块的分压电阻;
  • 工业传感器:温度/压力传感器的信号放大反馈电阻。

5.3 汽车电子

  • 车载信息娱乐系统:显示屏背光调节分压、CAN总线终端电阻;
  • 车身控制模块:小功率执行器(如指示灯)的限流电阻。

5.4 通信设备

  • 基站辅助电路:电源监控模块的分压、射频前端小信号电阻。

六、品牌与品质保障

旺诠(RALEC)是全球知名被动元件制造商,产品符合RoHS 2.0、REACH等环保法规,通过ISO 9001质量管理体系认证,批次一致性好(阻值偏差控制在±0.5%以内,远优于标称精度),适合量产场景的稳定供应。

该电阻以均衡的性能与成本优势,成为中高精度小功率电路的常用选择,可满足多数通用电子设备的设计需求。

Request for quote

Send RFQ

Use the form for single models, category sourcing, and multi-line BOM requirements.

Send your target model and quantity.

Product sourcing intelligence

Model, package, availability, and BOM fit reviewed before quotation.

WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.

Electronic component model and package intelligence review on an ESD-safe inspection bench

Model & package intelligence

Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.

BOM matching and alternative component comparison workstation with protected IC samples

BOM matching & alternatives

BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.

Electronic component sourcing availability dashboard with ESD-protected samples

Sourcing availability signal

Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.

Buyer sourcing scenarios

Examples of how common component sourcing requests are organized.

Typical RFQ scenarios based on the WMSIC form fields, catalog data, manual review steps, and shipment preparation workflow.

The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.

Package confirmation Typical RFQ workflow

A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.

Mixed BOM triage Typical RFQ workflow

The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.

Obsolete-part review Typical RFQ workflow

Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.

Small-batch request Typical RFQ workflow

Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.

Repair batch evidence Typical RFQ workflow

When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.

Model suffix clarification Typical RFQ workflow

Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.

Export handoff Typical RFQ workflow

The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.

Replenishment inquiry Typical RFQ workflow

Related products

Packaged components ready for RFQ.