WMSIC Electronic Components

ERJ-8BWFR068V

ModelERJ-8BWFR068V
Package1206
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

20 specifications

Core information

Product name
PANASONIC ERJ-8BWFR068V
Type
PANASONIC
Unit
Electronic Component
Minimum package
5000 圆盘

Technical parameters

Power
1W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
ERJ-8BWFR068V
Electronic Component
1
Package
1206
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.042g
Electronic Component
68mΩ
Electronic Component
1
Electronic Component
BM0264911698
Operating Temperature
55℃~+155℃
Electronic Component
0ppm/℃~+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ERJ-8BWFR068V厚膜功率电阻产品概述

松下ERJ-8BWFR068V是一款专为低阻值电流检测、功率控制场景设计的厚膜表面贴装电阻,凭借紧凑的1206封装、稳定的电性能及宽温适应性,广泛应用于电源、汽车电子、工业控制等领域。以下从核心属性、性能特性及应用维度展开详细概述。

一、产品命名与核心身份定位

ERJ-8BWFR068V属于松下ERJ-8B系列厚膜功率电阻,命名规则直接对应产品关键属性:

  • ERJ:松下表面贴装厚膜电阻产品前缀;
  • 8B:封装/功率等级标识,对应1206(公制3216)封装及1W额定功率;
  • FR:精度与温度系数组合,代表±1%精度及0ppm/℃~+100ppm/℃温度系数;
  • 068:阻值代码,对应0.068Ω(68mΩ);
  • V:封装细节标识,确保产品一致性。

该型号定位为小体积、低阻值、中功率的厚膜电阻,兼顾小型化设计与功率承载能力,适配空间受限的电子设备。

二、关键电性能参数解析

1. 低阻值与精度

阻值为68mΩ,属于低阻范畴,适合电流采样场景(电流与压降成正比,低阻可减少功率损耗);±1%的精度满足大部分工业/消费电子对阻值稳定性的要求,无需额外校准即可实现可靠的电流检测。

2. 功率与功率密度

额定功率1W,在1206封装(3.2mm×1.6mm)下实现了较高的功率密度(约1W/cm²),是常规0.5W 1206电阻的两倍,适合空间紧张的小型化设计。

3. 温度系数与稳定性

温度系数范围为0ppm/℃~+100ppm/℃(正温度系数),即温度每升高1℃,阻值最大增加0.01%。在工作温度范围(-55℃~+155℃)内,阻值变化率仅为约0.88%(155℃相对于25℃的变化量),可稳定应对宽温环境下的性能需求。

三、封装与物理特性

1. 封装尺寸与工艺

采用1206(公制3216)表面贴装封装,具体尺寸为:

  • 长度:3.2±0.2mm;
  • 宽度:1.6±0.15mm;
  • 厚度:0.55±0.1mm;
  • 焊盘间距:1.2±0.1mm。

制作工艺为厚膜丝网印刷+高温烧结,基于氧化铝陶瓷基片(Al₂O₃),确保良好的散热性与机械强度,避免因功率损耗导致的性能衰减。

2. 焊接兼容性

支持回流焊、波峰焊(需遵循松下焊接温度曲线标准),可适配自动化贴装生产线,提高生产效率,降低人工成本。

四、环境适应性与可靠性

1. 宽温工作范围

工作温度覆盖**-55℃~+155℃**,符合汽车电子(AEC-Q200标准)、工业控制等严苛环境的温度要求,可在极端温度下稳定工作(如车载舱内高温、工业现场低温)。

2. 可靠性验证

经过多项行业标准测试:

  • 温度循环测试(-55℃~+155℃,1000次循环):阻值变化≤0.5%;
  • 耐湿测试(85℃/85%RH,1000小时):阻值变化≤1%;
  • 功率寿命测试(1W功率,70℃环境,1000小时):阻值变化≤0.2%。

五、典型应用场景

1. 电源电路电流检测

开关电源、DC-DC转换器、AC-DC适配器中,作为电流采样电阻,检测输出电流以实现过流保护、恒流控制,低阻特性减少功率损耗,提升电源效率。

2. 汽车电子系统

车载充电器、电机驱动(电动座椅、车窗)、BMS(电池管理系统)的电流反馈回路,宽温适应性满足汽车舱内/舱外的温度变化,符合汽车级可靠性要求。

3. 工业控制设备

PLC(可编程逻辑控制器)、伺服驱动器、变频器的电流检测模块,±1%精度满足工业级控制需求,稳定支撑自动化生产。

4. 消费电子

笔记本电脑、移动电源、充电器的过流保护电路,紧凑封装适配小型化设计,提升产品便携性。

六、选型与应用注意事项

1. 功率降额

1W为额定功率(25℃环境下),实际应用需根据环境温度降额:

  • 70℃环境:降额至0.7W;
  • 100℃环境:降额至0.5W;
  • 155℃环境:降额至0.25W。

2. 散热设计

大电流应用时(如1W功率下电流约3.87A),需在PCB板上增加铜箔面积(如加宽焊盘、增加散热过孔),避免局部过热影响性能。

3. 精度匹配

若需更高精度(如0.5%、0.1%),需选择松下其他系列(如ERJ-6R);该型号±1%精度适合常规场景,无需过度选型增加成本。

综上,松下ERJ-8BWFR068V以小体积、低阻值、宽温稳定的特性,成为电流检测、功率控制领域的高性价比选择,可满足多行业的应用需求。

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