WMSIC Electronic Components

ERJ2RKF75R0X

ModelERJ2RKF75R0X
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
PANASONIC ERJ2RKF75R0X
Type
PANASONIC
Minimum package
10000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
ERJ2RKF75R0X
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.011g
Electronic Component
75Ω
Electronic Component
1
Electronic Component
BM0231052625
Operating Temperature
55℃~+155℃
Electronic Component
±100ppm/℃
Resistor Type
Resistor
Electronic Component
Electronic Component

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

ERJ2RKF75R0X 产品概述

一、产品简介

ERJ2RKF75R0X 为 PANASONIC(松下)品牌的贴片厚膜精密电阻,阻值 75 Ω,公差 ±1%,额定功率 100 mW,温度系数(TCR) ±100 ppm/℃,工作温度范围 -55℃ 至 +155℃,采用 0402 小封装。该器件面向对体积、精度和可靠性有综合要求的消费类与工业电子产品,兼顾空间受限与电性能稳定性的应用场景。

二、主要技术参数

  • 阻值:75 Ω
  • 精度:±1%
  • 额定功率:100 mW(以环境与铺铜条件为准)
  • 温度系数:±100 ppm/℃(约等于阻值随温度每升高 1℃ 变化 0.0075 Ω)
  • 工作温度:-55℃ ~ +155℃
  • 封装:0402(小型 SMD,适合高密度 PCB 布局)
  • 结构:厚膜贴片电阻,具有成本与加工兼顾的特点

三、性能特点

  • 小体积、高密度:0402 封装适用于空间受限或多层高密度板设计。
  • 精密等级:±1% 公差满足多数模拟电路和偏置网络的精度需求。
  • 宽工作温度:-55℃ 至 +155℃ 的温度范围使其适合苛刻环境与工业级温变场景。
  • 稳定性与经济性平衡:厚膜工艺在成本控制下提供良好的长期稳定性,但相较于金属膜电阻,TCR 与噪声性能略逊一筹(需按系统要求评估)。

四、典型应用

  • 信号调理与偏置网络:放大器输入/反馈回路、基准电路配套使用。
  • 射频/通讯设备的阻抗匹配与分压网络(受限于功率与频率特点)。
  • 工业控制、测量仪器中的温度补偿与分流应用(结合其宽温度范围)。
  • 消费电子、便携设备电路中对体积与精度有折中要求的场景。

五、选型与电路设计建议

  • 功率裕量:0402 封装 100 mW 功率在实际 PCB 上受铺铜面积和空气对流影响较大,建议设计时留有足够裕量(常规做法为不超过额定功率的 50%~70%),并参考制造商的功率降额曲线。
  • 温漂考量:±100 ppm/℃ 在温度变化剧烈时会引起可观的阻值偏差,若系统对温度敏感,请评估是否需要更低 TCR 的电阻或采用温度补偿手段。
  • 并联/串联:为提升功率处理能力或改善温漂与精度,可考虑并联或串联多只相同阻值器件,但要注意匹配与均流问题。
  • PCB 布局:增加焊盘铜箔面积有利于散热但会改变功率分布,需与热仿真结果配合决定。

六、焊接与可靠性

  • 推荐采用标准回流焊工艺,遵循 PCB 与元件制造商给出的回流温度曲线,避免超出最高工作温度范围的长期暴露。
  • 0402 小封装对机械应力敏感,搬运与贴装时应保证吸嘴、贴装参数正确,避免因冲击或过度热循环导致失效。
  • 常规可靠性测试(高低温循环、湿热、焊接冲击)可验证在目标应用环境下的长期稳定性。

七、储存与注意事项

  • 储存环境避免潮湿、高温与强光照;长时间保存建议按厂商建议进行防潮处理(如吸潮包装)。
  • 在装配与测试阶段,注意避免超功率、过大电流冲击或持续高温工作,以延长器件寿命并维持标称精度。

八、结语

ERJ2RKF75R0X 以 0402 小封装、±1% 精度和宽温工作范围在空间受限且要求一定精度与可靠性的电路中具有良好适应性。选用时应综合考虑功率散热、温漂对系统精度的影响,以及装配可靠性,必要时通过并联、补偿或更高等级器件来满足更严格的性能要求。若需深入热特性或降额曲线,建议参考松下官方资料或取得样品做实际评估。

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