WMSIC Electronic Components

ERJ2RKF5492X

ModelERJ2RKF5492X
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
PANASONIC ERJ2RKF5492X
Type
PANASONIC
Minimum package
10000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
ERJ2RKF5492X
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.025g
Electronic Component
54.9kΩ
Electronic Component
1
Electronic Component
BM0257349717
Operating Temperature
55℃~+155℃
Operating Voltage
50V
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.

ERJ2RKF5492X 厚膜贴片电阻产品概述

一、产品核心定位与市场价值

ERJ2RKF5492X是松下电子推出的通用型高精度厚膜贴片电阻,属于其经典厚膜电阻系列的主力型号。产品针对高密度小型化电路设计,兼顾成本与性能平衡,可替代传统插件电阻,适配0402封装的紧凑型PCB布局,广泛覆盖消费电子、工业控制、汽车电子等多领域的低功率高精度需求场景,是小型化电子设备中分压、滤波、电流检测等功能的优选组件。

二、关键参数与性能优势

该产品核心参数明确,性能满足多场景严苛要求:

  • 阻值与精度:固定阻值54.9kΩ,精度±1%(采用电阻代码“5492”标识,对应549×10²Ω),符合工业级电阻精度标准,可满足信号调理、分压电路的精确性需求;
  • 功率与电压:额定功率100mW(持续工作功率),最大持续工作电压50V,避免过压击穿风险;瞬时电压峰值需控制在70V以内(松下推荐安全值);
  • 温度特性:温度系数±100ppm/℃,即温度每变化1℃,阻值漂移≤0.01%;工作温度范围宽达-55℃~+155℃,适配极端高低温环境(如汽车低温启动、工业户外设备);
  • 稳定性:厚膜工艺赋予其优于普通碳膜电阻的抗老化性能,长期使用阻值漂移极小。

三、封装与工艺特性

  1. 封装尺寸:采用0402封装(英寸规格:0.04″×0.02″,公制换算:1.0mm×0.5mm,厚度约0.3mm),是当前贴片电阻中尺寸最小的主流封装之一,可将PCB面积缩小80%以上,适配便携式设备的紧凑布局;
  2. 厚膜工艺:在高纯度氧化铝陶瓷基板上印刷钌系厚膜电阻浆料,经1000℃以上高温烧结形成电阻层,再覆盖玻璃保护层。该工艺平衡了成本与性能:相比薄膜电阻成本降低30%,相比碳膜电阻耐温性提升2倍;
  3. 电极设计:两端金属电极采用镍/锡双层镀层,适配回流焊、波峰焊工艺,焊接可靠性高,且能有效防止氧化。

四、可靠性与环境适应性

松下对该产品进行了严格的可靠性测试,符合JIS、IEC等国际标准:

  • 负载寿命测试:125℃环境下施加额定功率1000小时,阻值变化≤0.5%,电压变化≤0.2%;
  • 耐湿测试:60℃/95%RH高湿环境下1000小时,阻值变化≤1%;
  • 振动与冲击:振动频率10~2000Hz(加速度2g)、冲击加速度1500g(持续0.5ms)测试后,性能无异常;
  • 热循环测试:-55℃~+155℃循环1000次,阻值变化≤0.8%,满足汽车电子、工业设备的宽温需求。

五、典型应用领域

该产品因小型化、宽温、高精度特性,典型应用包括:

  1. 便携式电子设备:智能手机、蓝牙耳机、智能手表的信号调理电路(如音频放大分压、传感器信号滤波);
  2. 工业控制模块:小型PLC、传感器节点的电流检测电阻(低功率需求下实现±1%精度检测);
  3. 汽车电子:仪表盘背光电路、车门控制模块的分压电阻(适配-40℃以下低温环境);
  4. 消费电子:智能家居设备(如智能灯泡、温湿度传感器)的电源分压电路。

六、选型与使用注意事项

  1. 功率降额:高温环境下需降额使用(如125℃时降额至50mW,155℃时降额至30mW),避免过功率导致阻值漂移或损坏;
  2. 焊接工艺:0402封装需注意回流焊温度(峰值240250℃,时间1030秒),避免热应力导致陶瓷基板开裂;
  3. 存储条件:未焊接产品需存储在常温(15~35℃)、干燥(湿度≤60%RH)环境,避免受潮影响电极焊接性;
  4. 精度升级:若需更高精度(±0.1%)或更低温度系数(±25ppm/℃),可选用松下薄膜电阻系列(如ERJ-3RKF),但成本更高。

ERJ2RKF5492X凭借松下的工艺积累与参数优势,成为小型化电子设备中性价比极高的电阻选型,可稳定支撑多场景的高精度低功率应用需求。

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