WMSIC Electronic Components

ERJ2RKF4702X

ModelERJ2RKF4702X
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 ERJ2RKF4702X
Type
PANASONIC
Minimum package
10000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
ERJ2RKF4702X
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.011g
Electronic Component
47kΩ
Electronic Component
1
Electronic Component
BM0264355833
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.

松下ERJ2RKF4702X厚膜贴片电阻产品概述

松下ERJ2RKF4702X是一款针对高密度、高精度电路设计的0402封装厚膜贴片电阻,属于松下经典ERJ系列的低功率高精度子系列,广泛应用于消费电子、工业控制及医疗仪器等场景。以下从型号解析、参数特性、技术优势、应用场景等维度展开详细概述。

一、产品核心定位与型号解析

ERJ2RKF4702X定位于小体积低功率高精度厚膜电阻,专为对空间紧凑性、阻值精度要求较高的信号调理电路打造。其型号各部分含义清晰:

  • ERJ:松下贴片电阻系列前缀,代表厚膜电阻技术路线;
  • 2R:功率等级标识,对应额定功率100mW;
  • KF:精度等级标识,代表阻值偏差±1%;
  • 4702:阻值编码,前两位“47”为有效数字,后两位“02”代表10²倍,即47×10²=47kΩ;
  • X:封装及系列补充标识,对应英制0402封装(公制1005,尺寸0.4×0.2英寸/1.0×0.5mm)。

二、关键技术参数详解

该电阻的核心参数匹配其“高精度、宽温稳定”的定位,具体如下:

  1. 阻值与精度:固定阻值47kΩ,精度±1%,远高于普通±5%精度电阻,可满足分压、限流等对阻值一致性要求较高的场景;
  2. 功率与额定电压:额定功率100mW,额定电压约68.6V(由公式( V=\sqrt{P×R} )计算得出),可覆盖大多数低功耗信号电路的电压需求;
  3. 温度系数(TCR):±100ppm/℃,即温度每变化1℃,阻值变化±0.01%。以工作温度范围为例,从-55℃到155℃的210℃温差下,阻值最大变化仅±0.21%,稳定性优异;
  4. 工作温度范围:-55℃~+155℃,覆盖工业级环境温度要求,可适应低温存储、高温运行等极端场景;
  5. 封装尺寸:0402(1005),体积小巧,适合高密度PCB设计,提升电路集成度。

三、厚膜电阻的技术优势

作为厚膜工艺电阻,ERJ2RKF4702X兼具性能与成本优势:

  • 工艺可靠性:采用陶瓷基板+厚膜电阻浆料丝网印刷+高温烧结工艺,电阻层与基板结合牢固,抗机械应力能力强,贴装后长期可靠性高;
  • 温湿度稳定性:厚膜电阻的温度特性优于部分薄膜电阻,且陶瓷基板的耐湿性能优异,可通过85℃/85%RH环境下的长期老化测试;
  • 抗浪涌能力:相比碳膜电阻,厚膜电阻的浪涌承受能力提升约30%,可降低电路因瞬间电压波动导致的失效风险;
  • 成本可控:厚膜工艺适合大规模量产,在保证精度的前提下,成本低于薄膜电阻,性价比突出。

四、典型应用场景

ERJ2RKF4702X的参数特性使其适配多种高密度、低功耗电路:

  1. 消费电子:智能手机、平板电脑的音频信号调理电路(如耳机接口分压、麦克风偏置)、传感器接口电路(如加速度计、环境光传感器的限流);
  2. 工业控制:小型PLC的输入输出模块、温度传感器(如PT100)的信号放大电路、低功率电机驱动的辅助限流;
  3. 医疗仪器:便携式血糖仪、血压计的信号处理电路(需稳定精度保障测量准确性)、小型医疗监护设备的电源分压;
  4. 通信设备:路由器、小型基站的射频前端滤波电路、光模块的信号偏置电路(0402封装适合光模块高密度设计)。

五、可靠性与环保认证

松下对该产品的可靠性进行了全面验证,符合多项国际标准:

  • 可靠性测试:通过IEC 60068-2-1(低温)、IEC 60068-2-2(高温)、IEC 60068-2-60(温湿度循环)等环境测试,平均无故障时间(MTBF)超过100万小时;
  • 环保认证:符合RoHS 2.0(无铅、无镉等有害物质)、REACH法规要求,可用于绿色电子产品设计;
  • 质量体系:生产过程通过ISO 9001质量管理体系认证,批量产品的阻值偏差一致性控制在±0.5%以内(远优于标称±1%)。

六、松下品牌的质量保障

作为全球电子元器件龙头,松下为ERJ2RKF4702X提供全链路质量保障:

  • 工艺一致性:采用自动化生产设备,确保每批次产品的阻值、功率、温度系数等参数一致性;
  • 技术支持:提供详细的 datasheet(含贴装工艺参数、焊接温度曲线等),以及在线技术咨询服务;
  • 供应链稳定性:全球布局生产基地,可满足客户的大规模采购需求,交货周期稳定。

综上,松下ERJ2RKF4702X厚膜贴片电阻凭借“小体积、高精度、宽温稳定、高可靠性”的特点,成为高密度电路设计的理想选择,适用于从消费电子到工业控制的多领域应用。

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