WMSIC Electronic Components

ERJ3EKF49R9V

ModelERJ3EKF49R9V
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 ERJ3EKF49R9V
Type
PANASONIC
Minimum package
5000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
ERJ3EKF49R9V
Electronic Component
1
Package
0603
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.03g
Electronic Component
49.9Ω
Electronic Component
1
Electronic Component
BM0264224039
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.

ERJ3EKF49R9V 厚膜贴片电阻产品概述

一、产品基础身份与定位

ERJ3EKF49R9V是松下(PANASONIC)旗下ERJ系列厚膜贴片电阻,采用0603英制贴片封装(对应公制1608封装),属于通用精密型电阻范畴。该型号兼顾精度、功率与环境适应性,专为中小功率电路的阻抗匹配、信号调理、电压/电流采样等场景设计,是量产化电子设备中替代常规精度电阻的优选方案之一。

二、核心电气性能参数

该电阻的电气参数直接决定应用边界,关键指标及意义如下:

  1. 阻值与精度:标称阻值49.9Ω,精度±1%——属于精密级电阻,相比常规5%精度电阻,能显著降低信号失真、采样误差,满足对阻抗一致性要求较高的场景(如传感器信号放大);
  2. 额定功率:100mW(0.1W)——支持低功耗电路长期稳定工作,按功率公式计算,允许最大工作电流≈0.447A(I=√(P/R)=√(0.1/49.9)),可覆盖多数中小功率电路的电流需求;
  3. 工作电压:75V——明确电路最大允许施加电压,超出该值可能导致电阻性能下降或损坏;
  4. 温度系数(TCR):±100ppm/℃——温度每变化1℃,阻值变化量为标称值的百万分之一(即±0.00499Ω/℃),在宽温范围内保持稳定,降低温度波动对电路的影响。

三、封装与工艺特性

  1. 0603紧凑封装:尺寸典型值为长1.6mm±0.15mm、宽0.8mm±0.15mm、厚0.45mm±0.10mm,兼容主流SMT生产线,适合高密度PCB布局,满足小型化电子设备设计需求;
  2. 厚膜工艺制造:采用丝网印刷电阻浆料+高温烧结工艺,相比薄膜电阻成本更低,且具备优异的长期稳定性与抗恶劣环境能力,适合批量生产;
  3. 银钯合金电极:焊接兼容性好,可与锡铅、无铅焊料可靠连接,降低虚焊、接触电阻过大等风险。

四、环境适应性与可靠性

  1. 宽温工作范围:-55℃~+155℃——覆盖工业级、车载环境的典型温度波动,无需额外温度补偿即可稳定工作;
  2. 可靠性验证:符合IEC 60115-1国际标准,经过1000小时155℃高温下额定功率测试,阻值变化通常控制在±0.5%以内,保证长期性能一致性;
  3. 环保合规:满足RoHS 2.0、REACH指令,不含铅、镉等有害物质,适配全球市场环保要求。

五、典型应用场景

基于参数特性,该电阻广泛应用于:

  1. 信号调理电路:音频设备阻抗匹配、传感器(温度/压力)信号放大滤波,±1%精度保证信号不失真;
  2. 采样电路:工业电机电流采样、电源模块电压分压采样,宽温特性适配极端环境;
  3. 通信设备:路由器/交换机的射频阻抗匹配、低功耗信号链路,0603封装适合高密度布局;
  4. 消费电子:智能手机/平板的电源管理(充电限流、分压),满足小型化与低功耗需求;
  5. 车载辅助电路:显示屏背光控制、传感器信号处理,宽温范围适配车载温度波动。

六、品牌与品质优势

作为松下核心电阻产品,ERJ3EKF49R9V具备:

  1. 批量一致性:自动化生产工艺使每批次参数偏差极小,降低客户筛选成本;
  2. 技术沉淀:松下数十年厚膜电阻研发经验,工艺成熟、性能稳定;
  3. 全球支持:全球技术服务与供应链保障,适合大规模量产企业。

该电阻凭借均衡的性能与可靠的品质,成为多领域中小功率电路的实用选择。

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