WMSIC Electronic Components

TA-I Technology RLP25FEER330

ModelRLP25FEER330
Package2512
BrandElectronic Component
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
RLP25FEER330
Type
TA-I Technology
Minimum package
4000 圆盘

Technical parameters

Power
2W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLP25FEER330
Electronic Component
1
Package
2512
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.084g
Electronic Component
330mΩ
Electronic Component
1
Electronic Component
BM0264549156
Electronic Component
SMD
Electronic Component
±50ppm/℃
Resistor Type
Current Sense 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.

RLP25FEER330 高功率贴片电流采样电阻概述

RLP25FEER330是大毅科技针对电力电子领域中等功率场景推出的一款低阻值贴片分流器,核心定位为精准电流采样器件。电流采样是电力电子系统实现安全控制、效率优化的关键环节,该产品凭借均衡的性能参数、可靠的封装设计,成为工业自动化、新能源、消费电子等领域的常用选择。

一、产品核心定位与技术背景

传统插件式分流器存在体积大、贴装效率低的问题,难以适配现代电力电子设备的小型化需求。RLP25FEER330采用2512贴片封装,兼顾小型化与高功率性能,满足自动化贴装与高密度PCB设计要求,可同时覆盖工业级可靠性与消费电子成本需求。

二、关键参数与性能指标详解

1. 阻值与精度

额定阻值330mΩ(毫欧级),属于低阻采样电阻范畴——低阻值可大幅降低自身功耗对系统的影响(功耗公式:(P=I^2R)),避免因电阻发热导致的额外损耗;±1%的精度无需额外校准即可实现可靠的电流换算((I=V/R)),满足大多数工业级电流检测的误差要求(如10A电流下,电压降偏差仅±0.033V)。

2. 功率与散热

2W额定功率,结合2512封装的氧化铝陶瓷基底导热设计,可在连续负载下稳定工作。实际应用中,短时间(10秒内)过载至3W仍能保持性能稳定(需配合PCB铜箔散热),覆盖多数中等功率场景(如电机驱动、电源适配器)。

3. 温度系数(TCR)

±50ppm/℃,即温度每变化1℃,阻值变化±0.005%。例如环境温度从-40℃升至125℃(变化165℃),阻值变化仅±0.825%,远优于普通电阻的±100ppm/℃,适合宽温环境(汽车电子、工业车间),避免温度波动导致的电流测量偏差。

4. 功能定位

作为电流采样电阻/分流器,核心作用是将被测电路的电流信号转换为电压信号((V=I×R)),后端电路(运放、ADC)可通过检测电压实现电流监测、过流保护、功率计算等功能,是电力电子系统的“信号转换器”。

三、封装与可靠性设计

1. 封装规格

2512贴片封装(尺寸6.4mm×3.2mm),符合国际SMT标准,适配标准贴片机生产线,可实现批量自动化组装,降低生产制造成本。

2. 材料与工艺

核心采用锰铜合金电阻膜+氧化铝陶瓷基底:

  • 锰铜合金:低温度系数、高稳定性,是电流采样电阻的常用材料;
  • 氧化铝陶瓷:导热系数约20W/(m·K),可快速导出功率损耗,避免局部过热导致的阻值漂移或失效。

3. 可靠性验证

产品经过振动(102000Hz,1.5g加速度)、冲击(1000m/s²,10次)、温湿度循环(-55℃125℃,500次) 等测试,符合工业级标准,可在恶劣环境下长期稳定工作。

四、典型应用场景

RLP25FEER330的性能参数覆盖多领域中等功率电流采样需求,典型应用包括:

  1. 开关电源与适配器:笔记本电脑适配器、LED驱动电源,实现过流保护;
  2. 电机驱动系统:伺服电机、BLDC电机,用于矢量控制(FOC)与过载保护;
  3. 电池管理系统(BMS):新能源汽车、储能电池,监测充放电电流,实现SOC估算与过充过放保护;
  4. 工业自动化设备:PLC、变频器、机器人关节,用于系统监控与故障诊断;
  5. 消费电子:快充充电器、移动电源,实现电流控制与安全保护。

五、产品优势与市场价值

  1. 性能均衡性:在低阻、高功率、高精度、低TCR之间实现平衡,无需为某一参数妥协;
  2. 工艺成熟可靠:大毅科技作为专业电阻厂商,封装与材料工艺稳定,产品一致性好;
  3. 成本效益显著:相比更高功率(5W)或更高精度(±0.5%)的采样电阻,成本更具竞争力,适合大规模应用;
  4. 设计兼容性强:2512封装适配多数PCB设计,仅需在电阻周围增加适量铜箔提升散热,降低系统设计难度。

综上,RLP25FEER330凭借均衡的性能、可靠的设计与广泛的适配性,成为电力电子领域中等功率电流采样场景的优选器件,可有效提升系统的安全性、稳定性与效率。

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