WMSIC Electronic Components

ERJ3EKF1243V

ModelERJ3EKF1243V
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 ERJ3EKF1243V
Type
PANASONIC
Minimum package
5000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
ERJ3EKF1243V
Electronic Component
1
Package
0603
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.03g
Electronic Component
124kΩ
Electronic Component
1
Electronic Component
BM0264567796
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.

ERJ3EKF1243V 产品概述

一、产品定位与核心属性

ERJ3EKF1243V是松下(PANASONIC)推出的0603封装厚膜贴片电阻,属于通用型小功率电阻范畴。其核心定位是为对阻值精度、温度稳定性有基础要求,且需高密度PCB布局的电子电路提供经济可靠的阻值匹配方案,广泛适配消费电子、工业控制、通信设备等多领域。

二、核心参数深度解析

1. 阻值与精度

标称阻值为124kΩ,精度标注**±1%**,通过贴片电阻三位数字代码“1243”标识(前两位“12”为有效数字,第三位“3”表示×10³,即12×10³×10=124kΩ)。±1%精度无需额外校准即可满足多数电路的阻值匹配需求(如信号分压、功率分配),避免高精度电阻的成本溢价。

2. 功率与电压额定值

  • 额定功率:100mW,覆盖小信号电路的典型功耗场景(如传感器信号调理、音频偏置);
  • 最大工作电压:75V,经降额设计验证(理论最大电压≈√(0.1W×124kΩ)≈111V),实际标注75V可有效避免过压损坏,保障电路安全。

3. 温度特性

  • 温度系数(TC):±100ppm/℃,表示温度每变化1℃,阻值变化百万分之一百。例如环境温度从25℃升至155℃(变化130℃),阻值变化约1.61kΩ,漂移率仅1.3%,满足温度变化场景下的性能稳定;
  • 工作温度范围:-55℃~+155℃,覆盖工业级应用的严苛环境(如户外设备、车载辅助电路)。

4. 封装规格

采用0603(英制)/1608(公制)封装,尺寸为1.6mm×0.8mm,体积小、重量轻,适合手机、可穿戴设备、小型通信模块等高密度PCB布局,提升电路集成度。

三、关键性能优势

1. 精度与稳定性平衡

±1%精度+±100ppm/℃ TC的组合,既满足多数电路对阻值一致性的要求,又避免了高精度电阻的成本浪费,是成本敏感型设计的优选方案。

2. 可靠性保障

松下厚膜电阻采用成熟的厚膜印刷工艺,结合严格的生产管控,经温度循环、湿度老化、振动测试等可靠性验证:

  • 1000小时高温老化后,阻值漂移率≤0.5%;
  • 振动测试(10~2000Hz,加速度2g)后无开路/短路故障,长期使用稳定性可靠。

3. 环保与合规

产品符合RoHS、REACH等国际环保标准,无铅无镉,适配绿色电子产品设计需求。

四、典型应用场景

1. 消费电子领域

  • 手机主板:电池电压分压电路(将4.2V电池电压分压至MCU采样端);
  • 蓝牙耳机:音频偏置电路(为运放提供稳定的直流偏置电压)。

2. 工业控制领域

  • 温度传感器:信号调理电路(将PT100传感器输出的mV级信号分压至ADC输入范围);
  • PLC辅助电路:小型继电器线圈限流(限制启动电流避免触点粘连)。

3. 通信设备领域

  • 路由器射频前端:阻抗匹配辅助电路(优化2.4G/5G信号传输效率);
  • 光纤收发器:激光二极管偏置电路(提供稳定的10mA级工作电流)。

五、品牌与品质说明

该产品由松下电子出品,松下在厚膜电阻领域拥有数十年技术积累,产品通过ISO9001质量管理体系认证,每批次阻值一致性偏差≤0.1%,可满足批量生产的稳定性需求。

ERJ3EKF1243V凭借“小封装、高精度、宽温稳定”的特点,成为电子电路设计中“性能-成本-体积”平衡的经典选择。

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