WMSIC Electronic Components

TA-I RMS04FT5490

ModelRMS04FT5490
Package0402
BrandElectronic Component
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
RMS04FT5490
Type
TA-I Technology
Minimum package
10000 圆盘

Technical parameters

Power
62.5mW
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RMS04FT5490
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.009g
Electronic Component
549Ω
Electronic Component
10
Electronic Component
BM0265676250
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.

RMS04FT5490厚膜贴片电阻产品概述

RMS04FT5490是大毅科技推出的一款紧凑型厚膜贴片电阻,专为小型化、高可靠性电子设备设计,核心参数精准匹配0402封装的性能边界,覆盖从消费电子到工业应用的多场景需求。

一、产品核心参数与定位

这款电阻的核心参数清晰指向高性价比+稳定性能的定位:

  • 阻值:549Ω(非标准E系列阻值,需定制化适配特定电路);
  • 精度:±1%(满足工业级电路的阻值精准度要求,避免信号偏差);
  • 功率:62.5mW(即1/16W,与0402封装的功率容量完全匹配,无额外余量压力);
  • 电气极限:最大工作电压50V(低中压电路安全运行的核心保障);
  • 温度特性:±100ppm/℃(温度系数稳定,阻值随温度变化极小);
  • 工作温区:-55℃~+155℃(覆盖工业级、汽车级的极端环境需求)。

二、封装与工艺特性

1. 0402紧凑封装

采用英制0402封装(公制对应1005),尺寸仅为1.0mm×0.5mm,是贴片电阻中的超小型封装之一,可显著降低电路板的空间占用,适配智能穿戴、微型传感器等“小体积”设备。

2. 厚膜工艺优势

厚膜电阻通过丝网印刷+高温烧结工艺制成,相比薄膜电阻成本更低,且抗冲击、抗老化性能更优;电阻膜层与陶瓷基底结合紧密,避免了薄膜易脱落的问题,长期使用阻值漂移极小。

三、电气性能与可靠性验证

1. 精度与温度稳定性

±1%的精度可满足大多数模拟电路、信号调理电路的阻值要求(如运算放大器的反馈网络、分压电路);±100ppm/℃的温度系数意味着,在工作温区范围内(-55℃~155℃),阻值最大变化量仅为549Ω×(155-25)℃×100e-6≈0.071Ω,远低于电路允许的偏差范围。

2. 功率与电压适配性

62.5mW的额定功率是0402封装的标准功率等级,无过度降额(若电路实际功耗低于此值,可靠性进一步提升);50V的最大工作电压覆盖了常见的5V、12V、24V等工业电源电路,避免电压击穿风险。

3. 环境耐受性

-55℃~155℃的宽温范围,可适配北方低温环境、高温工业车间,甚至汽车发动机舱附近的小功率电路;同时,厚膜工艺的抗湿、抗腐蚀性能,能应对潮湿、盐雾等复杂环境。

四、典型应用场景

RMS04FT5490的参数特性使其适配多领域:

  1. 消费电子:智能手环、蓝牙耳机、小型MP3等便携式设备(小封装+低功耗);
  2. 工业控制:PLC模块、传感器信号调理电路(宽温+精度稳定);
  3. 汽车电子:车载中控的辅助电路、胎压监测传感器(宽温+可靠性);
  4. 通信设备:小型路由器、物联网节点(紧凑封装+批量适配)。

五、品牌与品质保障

大毅科技作为国内专业的被动元件厂商,其厚膜电阻生产线通过ISO9001、IATF16949等认证,产品符合RoHS、REACH等环保标准;RMS04FT5490的批量供货稳定性高,且支持定制化阻值(如549Ω这类非标准值),适合中小批量的电路设计需求。

总结:RMS04FT5490是一款“小而精”的厚膜贴片电阻,精准匹配0402封装的性能边界,兼顾成本与可靠性,是小型化电子设备的理想电阻选择。

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