WMSIC Electronic Components

ERJ2RKF5490X

ModelERJ2RKF5490X
Package0402
BrandPANASONIC
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
PANASONIC ERJ2RKF5490X
Type
PANASONIC
Minimum package
10000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
ERJ2RKF5490X
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.011g
Electronic Component
549Ω
Electronic Component
1
Electronic Component
BM0257349739
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.

ERJ2RKF5490X 厚膜贴片电阻产品概述

ERJ2RKF5490X是松下电子推出的一款0402封装厚膜贴片电阻,专为高密度、低功耗电子设计场景打造,具备高精度、宽温适应性等核心优势,是消费电子、工业控制等领域的常用基础元器件。

一、产品基本定位与核心身份

该电阻属于松下ERJ系列厚膜电阻产品线,型号中“ERJ”代表厚膜贴片电阻,“2RKF”对应功率与精度等级,“5490X”明确阻值为549Ω(末位“X”为封装/特性标识)。作为小功率高精度电阻,其定位覆盖从普通消费电子到工业级应用的中间需求场景,兼顾性能与成本优势。

二、关键性能参数详解

1. 阻值与精度

阻值固定为549Ω,精度等级为**±1%**——这一精度远高于普通±5%精度电阻,可有效避免因阻值偏差导致的电路信号失真或功率分配不均,适合对阻值稳定性要求较高的信号调理、反馈电路。

2. 功率与电压规格

额定功率为100mW,最大工作电压为50V。该功率规格适配低功耗电路(如传感器节点、小型电源模块),在正常工作条件下可长期稳定运行,无过热或阻值漂移风险。

3. 温度系数与温宽

温度系数(TCR)为**±100ppm/℃,即温度每变化1℃,阻值变化约±0.0549Ω(549Ω×100×10⁻⁶);工作温度范围覆盖-55℃至+155℃**——宽温特性使其可在极端环境(如工业高温车间、低温户外监测设备)中稳定工作,阻值漂移可控。

三、封装工艺与物理特性

1. 封装尺寸

采用0402封装(英制命名,对应公制1005,即长1.0mm×宽0.5mm×厚0.3mm左右),是当前小型化电子设备中常用的超小封装之一,可显著节省PCB空间,适配可穿戴设备、智能手机等对体积要求严格的产品。

2. 厚膜工艺优势

基于厚膜陶瓷工艺制造:在氧化铝陶瓷基底上印刷钌基电阻浆料,经高温烧结、电极制作而成。相比薄膜电阻,厚膜工艺成本更低、批量一致性更好;相比碳膜/金属膜插件电阻,贴片式设计适配自动化SMT贴装,生产效率提升明显。

四、环境适应性与可靠性

1. 抗恶劣环境能力

  • 耐高低温循环:宽温范围覆盖工业级标准,可承受-55℃低温存储与+155℃高温工作;
  • 抗振动冲击:陶瓷基底与厚膜结构具备良好的机械稳定性,适合车载、手持设备等振动场景;
  • 耐湿性能:符合松下内部防潮标准,可在湿度30%-95%(非冷凝)环境下长期工作。

2. 长期可靠性

产品经过温度循环测试(-55℃~155℃,1000次循环)、**湿度负荷测试(85℃/85%RH,1000小时)**等可靠性验证,额定功率下阻值漂移率≤0.5%,满足量产设备的长期稳定需求。

五、典型应用场景

1. 消费电子领域

  • 智能手机/平板电脑:电源管理模块(如LDO线性稳压器反馈电阻)、音频信号调理电路;
  • 可穿戴设备:智能手环/手表的传感器信号放大、低功耗LED驱动电路。

2. 工业控制领域

  • 小型PLC:数字量输入/输出模块的限流电阻;
  • 传感器节点:温度/压力传感器的信号调理(如电桥电路匹配电阻);
  • 户外监测设备:低温环境下的无线数据传输模块辅助电路。

3. 汽车电子辅助场景

  • 车载仪表盘:背光电路限流、小型传感器(如胎压监测辅助电路);
  • 车载娱乐系统:音频接口的阻抗匹配电阻(需结合汽车级认证需求)。

六、品牌背书与品质保障

松下作为全球电子元器件龙头企业,ERJ系列电阻具备:

  • 环保合规:符合RoHS 2.0、REACH等国际环保标准,无铅无卤;
  • 批次一致性:生产过程采用自动化控制,批次间阻值偏差≤0.2%,适合大规模量产;
  • 可追溯性:每批产品附带完整的测试报告,满足客户品质管控需求。

ERJ2RKF5490X凭借小体积、高精度、宽温适应性等特点,成为众多电子设计工程师的优选基础电阻,可有效支撑高密度、低功耗电路的稳定运行。

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