WMSIC Electronic Components

Viking ARG03BTC4R70

ModelARG03BTC4R70
Package0603
BrandVIKING
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
Viking ARG03BTC4R70
Type
VIKING
Minimum package
5000

Technical parameters

Power
100mW
Electronic Component
VIKING
Electronic Component
ARG03BTC4R70
Electronic Component
1
Package
0603
Electronic Component
SMD Resistor
Electronic Component
±0.1%
Electronic Component
0.023g
Electronic Component
4.7Ω
Electronic Component
1
Electronic Component
BM0257571258
Operating Temperature
55℃~+155℃
Operating Voltage
75V
Electronic Component
±25ppm/℃
Resistor Type
Resistor
Electronic Component
5000

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

Viking ARG03BTC4R70 薄膜电阻产品概述

一、产品定位与核心价值

这是光颉(Viking)针对高精度、宽温稳定、小封装集成需求推出的薄膜电阻,核心定位为中高端电子系统的“精密基础元件”。区别于普通厚膜电阻,它通过薄膜工艺实现了“小体积+高精准+低漂移”的平衡——既适配高密度PCB的小型化设计,又能在极端温度下保持阻值稳定,是仪器仪表、汽车电子等领域的高性价比选择。

二、关键技术参数深度解析

参数是电阻性能的核心参考,以下结合应用场景解读关键指标:

1. 阻值与精度

标称阻值4.7Ω,精度±0.1%——在电子电路中,这种精度足以满足精密采样、反馈回路的需求(例如电流传感器的分流电阻)。举个例子:若电路中需要1A电流对应1V电压(R=1V/1A=1Ω),用±0.1%精度的电阻可将电流测量误差控制在0.1%以内,避免因阻值偏差导致的系统误差。

2. 功率与电压

额定功率100mW,最大工作电压75V——需注意功率降额原则:实际使用时需确保功耗不超过100mW(公式:P=U²/R)。例如:

  • 若工作电压为10V,功耗=10²/4.7≈21.3mW(符合要求);
  • 若误接75V,功耗=75²/4.7≈1191mW(远超额定值,会导致电阻烧毁)。

3. 温度系数(TCR)

±25ppm/℃——简单理解:温度每变化1℃,阻值变化约±25×10⁻⁶(即0.0025%)。例如:

  • 温度从25℃升至125℃(变化100℃),阻值最多变化±0.25%,远优于普通厚膜电阻(TCR通常>100ppm/℃),适合宽温环境。

4. 工作温度范围

-55℃~+155℃——覆盖工业级、汽车级的典型工作区间,可适应极端场景(如汽车发动机舱、户外工业设备),无需额外散热设计。

三、封装工艺与结构特点

1. 封装规格

0603(英制代码,对应公制1608,尺寸约1.6mm×0.8mm)——小尺寸适合高密度PCB设计,能有效缩小电路体积,满足便携设备、小型化模块的需求(例如智能穿戴、无人机控制板)。

2. 薄膜工艺

采用真空溅射金属薄膜(区别于厚膜电阻的印刷工艺):

  • 薄膜厚度均匀性更好,阻值精度与稳定性更高;
  • 寄生参数(寄生电感、电容)更低,适合高频应用场景(如射频信号调理)。

3. 基片与端电极

  • 基片:高纯度氧化铝陶瓷,耐高温、热膨胀系数低,避免温度变化导致的阻值漂移;
  • 端电极:镀锡/镍合金,符合RoHS标准,焊接兼容性好(可通过回流焊、波峰焊等常规工艺组装)。

四、典型应用场景匹配

该电阻的性能参数与场景需求高度契合,核心应用集中在以下领域:

1. 精密仪器仪表

如数字万用表、示波器的电流/电压测量电路——依赖±0.1%精度实现准确读数,宽温范围保证不同环境下的测量一致性(例如实验室从低温环境移至室温时,读数无明显偏差)。

2. 汽车电子系统

如发动机控制单元(ECU)的传感器反馈电路、车载导航的信号调理模块——-55℃~+155℃宽温适配发动机舱等极端温度,TCR稳定确保信号精度(例如燃油喷射系统的压力传感器,温度变化不影响控制精度)。

3. 工业控制设备

如PLC的模拟量输入模块、伺服电机的电流采样电路——长期稳定工作,避免因温度变化导致的控制误差(例如生产线的伺服电机,连续工作8小时后阻值漂移≤0.05%)。

4. 消费电子高精度模块

如高端音频设备的信号衰减电路、智能穿戴的传感器接口——小封装满足小型化需求,精度保证信号质量(例如蓝牙耳机的音频解码模块,阻值稳定避免音质失真)。

五、可靠性与环境适应性验证

1. 长期稳定性

  • 负载寿命测试:1000小时额定功率下工作,阻值变化率≤0.1%;
  • 温度循环测试:-55℃~+155℃循环500次,阻值漂移≤0.05%。

2. 环境耐受性

符合IEC 60068-2-1(低温)、IEC 60068-2-2(高温)、IEC 60068-2-6(振动)等标准,可承受工业环境中的振动与湿度变化(例如户外光伏逆变器的控制板,湿度85%RH下工作无失效)。

3. 焊接可靠性

端电极设计优化,焊接后剪切强度≥5N,避免虚焊、脱焊问题,适合批量生产(例如汽车电子厂的SMT生产线,良率≥99.5%)。

该产品已通过RoHS、REACH等环保认证,符合全球市场合规要求,是各领域工程师实现精密电路设计的可靠选择。

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