WMSIC Electronic Components

ERJPA3J121V

ModelERJPA3J121V
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 ERJPA3J121V
Type
PANASONIC
Minimum package
5000 圆盘

Technical parameters

Power
250mW
Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
ERJPA3J121V
Electronic Component
1
Package
0603
Electronic Component
SMD Resistor
Electronic Component
±5%
Electronic Component
0.03g
Electronic Component
120Ω
Electronic Component
1
Electronic Component
BM0264911713
Operating Temperature
55℃~+155℃
Operating Voltage
150V
Electronic Component
±200ppm/℃
Resistor Type
Resistor

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

ERJPA3J121V 厚膜贴片电阻产品概述

ERJPA3J121V是Panasonic(松下)推出的一款0603封装厚膜贴片电阻,针对中低精度需求的小型化电子设备设计,具备稳定的电气性能与可靠的环境适应性,广泛应用于消费电子、工业控制等领域。

一、核心参数规格梳理

该电阻的关键电气与物理参数均符合行业标准及松下产品规范,具体如下:

  • 类型:厚膜贴片电阻(SMD),采用丝网印刷+高温烧结工艺制备电阻膜层,兼顾成本与稳定性;
  • 封装:0603(英制尺寸,对应公制1608,体积为1.6mm×0.8mm×0.45mm),适配高密度PCB布局;
  • 阻值:120Ω(标识代码“121”,即12×10¹Ω);
  • 精度:±5%(行业J档精度,适用于非超高精度要求的电路);
  • 额定功率:250mW(常温25℃下的最大允许功率);
  • 最大工作电压:150V(电路峰值电压不得超过此值,避免电击穿);
  • 温度系数(TCR):±200ppm/℃,即温度每变化1℃,阻值变化±0.024Ω(120Ω×200×10⁻⁶);
  • 工作温度范围:-55℃至+155℃,覆盖工业级环境温度需求;
  • 环保认证:无铅(RoHS compliant),符合欧盟RoHS2.0及REACH标准。

二、产品设计与工艺优势

松下针对该电阻的设计优化了多项性能,提升了实用性与可靠性:

  1. 厚膜工艺稳定性:电阻膜层采用金属氧化物厚膜,相比薄膜电阻成本更低,且在宽温度范围内阻值漂移小;
  2. 端电极可靠性:采用多层电极结构(Ni底电极+Ag中间层+Sn表面层),兼容回流焊、波峰焊工艺,焊接后附着力强,耐温性能优异;
  3. 小型化适配性:0603封装体积小,可显著降低PCB板面积,满足智能手机、智能穿戴等设备的“轻薄化”需求;
  4. 抗环境干扰:经过湿热(85℃/85%RH)、振动(10-2000Hz)等可靠性测试,长期使用阻值变化率≤1%(典型值)。

三、典型应用场景

结合参数特性,该电阻适用于以下场景:

  • 消费电子:智能手机充电电路的限流电阻、平板电脑信号分压网络、智能手表传感器接口匹配电阻;
  • 工业控制:PLC输入输出模块的限流电阻、温度传感器信号调理电路的偏置电阻;
  • 通信设备:路由器、交换机的电源滤波电路、光纤收发器的信号匹配电阻;
  • 小型家电:智能插座的过载保护电路、温控器的温度检测分压电阻。

四、选型与使用注意事项

工程师在设计与使用中需注意以下要点,避免性能失效:

  1. 功率降额:常温下建议实际工作功率≤125mW(降额50%),155℃高温环境下需进一步降额至≤80mW,避免热失效;
  2. 温度系数考量:若电路对阻值精度要求高于±1%,需结合工作温度范围计算阻值变化,必要时采用温度补偿设计;
  3. 焊接工艺规范:回流焊峰值温度建议控制在240-260℃,时间不超过30s;波峰焊需避免二次焊接,防止端电极氧化;
  4. 存储条件:未开封产品存储温度为-40℃至+85℃,湿度≤60%;开封后需在12个月内使用,避免吸潮影响焊接性能。

五、品牌与品质保障

Panasonic作为全球电子元器件龙头企业,该电阻具备以下品质优势:

  • 批量一致性:生产过程采用自动化设备,批量产品阻值偏差控制在±5%以内,减少电路调试工作量;
  • 认证齐全:符合IEC 61000-4-2(ESD防护)、MIL-STD-202(可靠性测试)等国际标准;
  • 售后支持:提供完整的datasheet与技术咨询,针对特定应用可提供定制化方案建议。

ERJPA3J121V凭借其高性价比、稳定性能与松下的品质保障,成为中低精度小型化电路的优选电阻之一,广泛得到消费电子、工业等领域工程师的认可。

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