WMSIC Electronic Components

ERJ2RKF3012X

ModelERJ2RKF3012X
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 ERJ2RKF3012X
Type
PANASONIC
Minimum package
10000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
ERJ2RKF3012X
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.011g
Electronic Component
30.1kΩ
Electronic Component
1
Electronic Component
BM0257349567
Operating Temperature
55℃~+155℃
Operating Voltage
100V
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ERJ2RKF3012X精密厚膜贴片电阻产品概述

一、产品基本属性

ERJ2RKF3012X是松下(PANASONIC)推出的精密级厚膜贴片电阻,属于ERJ系列主流贴片电阻产品,核心参数与型号标识对应清晰:

  • 阻值:30.1kΩ(型号中“3012”为阻值编码,即301×10²Ω);
  • 精度:±1%(满足工业级与消费电子的精密应用需求);
  • 功率:额定100mW(0402封装下的典型功率规格);
  • 封装:0402(英制尺寸,对应公制1005,实际尺寸1.0mm×0.5mm);
  • 温漂:±100ppm/℃(温度变化对阻值的影响可控);
  • 工作温度:-55℃~+155℃(宽温范围适配多场景);
  • 额定电压:100V(需结合功率限制共同约束实际使用)。

该产品以厚膜工艺为核心,平衡了成本与性能,是中低功率精密电路的常用选型。

二、核心技术特性

1. 厚膜工艺的性能优势

厚膜电阻采用丝网印刷+高温烧结工艺制造,相比薄膜电阻成本降低约30%,同时具备较好的高温稳定性(工作温度上限达155℃);相比碳膜电阻,精度提升2~3倍、温漂减小50%以上,适合对精度有要求但无需超精密(如±0.1%)的场景。

2. 精度与温漂的实用平衡

±1%的精度可覆盖多数消费电子、工业控制的信号调理需求(如传感器输出分压、运放偏置电路);±100ppm/℃的温漂意味着温度每变化100℃,阻值仅变化3.01Ω(30.1kΩ×100e-6×100),即相对变化±0.01%,可满足普通工业环境(-40℃~+85℃)的温度波动要求。

3. 小封装高密度适配

0402封装是目前贴片电阻的主流小封装之一,相比0603封装体积减小约60%,可显著提升PCB布线密度,适配智能手机、可穿戴设备等对空间要求苛刻的产品。

三、典型应用场景

ERJ2RKF3012X的参数特性使其广泛应用于以下领域:

  1. 消费电子:智能手机/平板电脑的电源管理模块(小信号电压检测电阻)、音频电路(前置放大器反馈电阻)、蓝牙模块偏置电路;
  2. 工业控制:PLC输入输出模块的信号分压电阻、温度/压力传感器信号调理电路、小型工业电源限流电阻;
  3. 汽车电子:车载信息娱乐系统(IVI)音频电路、车身控制模块(BCM)小信号控制电阻(适配车载-40℃~+85℃温区,部分高端车型高温区域也可覆盖);
  4. 可穿戴设备:智能手表/手环的心率传感器信号调理电阻、低功耗蓝牙模块匹配电阻(小封装适配紧凑结构)。

四、选型与使用注意事项

1. 功率与电压的双重限制

实际使用需同时满足两个约束:

  • 功率约束:( P \leq 100mW ),即最大电流 ( I \leq \sqrt{\frac{P}{R}} \approx 57.7μA );
  • 电压约束:( V \leq 100V )。

当电压高于 ( \sqrt{0.1×30100} \approx 54.8V ) 时,功率会超过额定值,需通过降额或串联电阻避免过功率。

2. 高温降额要求

0402封装厚膜电阻在高温下需降额:

  • -55℃~+125℃:可满功率(100mW);
  • +125℃~+155℃:功率降额至50%(50mW),避免热应力导致阻值漂移或失效。

3. 焊接与存储

需遵循松下推荐的回流焊曲线(峰值温度240℃260℃,时间≤10s),避免局部过热;存储时保持干燥(湿度≤60%RH),温度范围-40℃+85℃,防止引脚氧化影响焊接可靠性。

该产品凭借高性价比、宽温适配性与小封装优势,成为中低功率精密电路的主流选型之一。

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