WMSIC Electronic Components

ERJ3EKF5490V

ModelERJ3EKF5490V
Package0603
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 ERJ3EKF5490V
Type
PANASONIC
Minimum package
5000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
ERJ3EKF5490V
Electronic Component
1
Package
0603
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.03g
Electronic Component
549Ω
Electronic Component
1
Electronic Component
BM0264078681
Operating Temperature
55℃~+155℃
Operating Voltage
75V
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.

松下ERJ3EKF5490V厚膜电阻产品概述

一、产品核心身份与定位

ERJ3EKF5490V是松下(Panasonic)ERJ系列厚膜贴片电阻的典型型号,针对小体积高密度电路设计,以0603封装为核心,兼顾高精度、宽温稳定性与成本优势,广泛适配消费电子、工业控制、汽车辅助系统等多领域的低功率模拟/数字电路需求,是松下厚膜电阻产品线中性价比突出的基础通用型号。

二、关键电气性能参数

该电阻核心电气参数明确且稳定,具体如下:

  • 阻值与精度:标称阻值549Ω,常温(25℃)下阻值偏差为±1%,满足多数信号调理、分压电路对精度的要求;
  • 功率额定值:25℃环境下额定功率100mW,符合0603封装贴片电阻的典型功率规格,覆盖大多数低功耗电路的功率需求;
  • 温度系数(TCR):±100ppm/℃,表示在-55℃~+155℃工作温度范围内,每变化1℃阻值变化率不超过0.01%,保证极端温度下的阻值稳定性;
  • 工作电压限制:最大连续工作电压为75V(直流或交流有效值),实际使用需同时结合功率限制(√(P×R)≈7.4V),取两者最小值作为实际最大电压,避免过压损坏。

三、物理封装与可靠性设计

ERJ3EKF5490V采用0603英制贴片封装(公制1608,尺寸1.6mm×0.8mm×0.45mm),适配高密度PCB布线;采用厚膜工艺制造(陶瓷基底+丝网印刷电阻浆料+烧结+环氧树脂涂层),具备以下可靠性优势:

  • 机械稳定性:陶瓷基底提供良好机械强度,环氧树脂涂层抗机械划伤与环境腐蚀,符合IPC-A-610焊接可靠性标准;
  • 焊接兼容性:焊盘设计适配回流焊(260℃/30s)、波峰焊工艺,无铅焊接性能优异,满足RoHS环保要求;
  • 长期可靠性:松下厚膜工艺控制严格,失效率低,符合JIS C 5063等电子元器件可靠性标准。

四、适用场景与应用优势

该型号因体积小、精度高、宽温稳定,主要应用于以下场景:

  1. 消费电子:智能手机、平板的信号滤波、分压电路,耳机接口阻抗匹配;
  2. 工业控制:PLC模拟量输入输出模块的信号调理,传感器接口电路;
  3. 汽车辅助系统:倒车雷达、胎压监测的低功率控制电路(工作温度覆盖-55~155℃);
  4. 小型医疗设备:便携式血糖仪、血压计的传感器信号放大电路。

其核心优势包括:

  • 小体积高密度:0603封装缩小PCB占用面积,适配小型化产品设计;
  • 宽温性能稳定:±100ppm/℃ TCR与-55~155℃温区,满足极端环境应用;
  • 品牌可靠性:松下成熟工艺保障,长期使用阻值漂移小,故障率低。

五、环境适应性表现

ERJ3EKF5490V具备较强的环境耐受能力:

  • 温度范围:工作温度-55℃+155℃,存储温度-40℃+85℃,覆盖工业级与汽车级部分场景;
  • 湿度适应性:在85℃/85%RH高湿环境下长期工作(1000小时),阻值变化率≤0.5%,性能稳定;
  • 振动冲击抗性:符合IEC 60068-2-6振动测试(10~2000Hz,1G加速度)与IEC 60068-2-27冲击测试(100G,1ms)要求,适用于振动环境。

六、选型与使用注意事项

为保障产品性能与可靠性,使用时需注意:

  1. 功率降额:25℃以上需按松下官方降额曲线降低功率使用(如100℃时额定功率降为70%),避免过热;
  2. 电压限制:实际最大连续电压需取75V与√(P×R)的较小值(约7.4V),不可超过额定电压;
  3. 焊接工艺:避免回流焊温度超过260℃或时间超过30s,焊接后需清洗残留助焊剂;
  4. 存储条件:存储于常温干燥环境(温度≤30℃,湿度≤60%RH),开封后尽快使用(建议12个月内),避免受潮。

总结:ERJ3EKF5490V作为松下厚膜电阻的经典型号,以均衡的性能与可靠性,成为多领域小功率电路的理想选择,适合对体积、精度、温稳有要求的批量应用。

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