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TA-I Technology RLP25FEER001
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- RLP25FEER001
- Type
- TA-I Technology
- Minimum package
- 4000 圆盘
Technical parameters
- Power
- 2W
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- RLP25FEER001
- Electronic Component
- 1
- Package
- 2512
- Electronic Component
- Current Sense Resistor / Shunt
- Electronic Component
- ±1%
- Electronic Component
- 0.084g
- Electronic Component
- 1mΩ
- Electronic Component
- 1
- Electronic Component
- BM0264975368
- 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.
RLP25FEER001 产品概述
一、产品简介
RLP25FEER001 是大毅科技推出的一款贴片式电流采样电阻（分流器），阻值 1mΩ，精度 ±1%，额定功率 2W，温度系数（TCR）±50ppm/℃，封装规格为 2512（约 6.35×3.18mm）。该器件用于将流过的电流转换为低压降电压信号，便于电流检测与控制系统进行采样和测量。
二、主要性能与参数
- 阻值：1mΩ ±1%（高精度，适合精确电流测量）
- 额定功率：2W（贴片散热，需注意 PCB 热设计）
- 温度系数：±50ppm/℃（≈0.005%/℃，温度漂移小）
- 封装：2512 贴片封装，适配常规 SMT 工艺
- 安装方式：贴片（SMD），兼容回流焊工艺
三、应用场景
- 开关电源与 DC-DC 转换器的电流检测与限流
- 电池管理系统（BMS）、充放电监控
- 电机驱动与负载电流监测
- 逆变器、UPS 与充电桩的电流采样
- 测试测量设备与保护电路
四、使用与 PCB 设计建议
- 电压降与功率示例：I×R，例如 10A 时电压降 10mV，功耗 0.1W；理论最大连续电流 Imax = sqrt(P/R) ≈ 44.7A（在理想散热条件下）。为保证可靠性建议按 60%～75% 额定功率退载长期使用（建议连续电流控制在 27–33A 范围以内，具体取决于 PCB 散热）。
- 热管理：在器件两侧设计大铜箔散热区并通过多盏过孔导热至内层/底层，提高散热能力，避免局部过热引起阻值漂移或失效。
- 布线与测量：因电阻值极低，测量电压很小，建议在 PCB 布局上采用独立的取样回路或 Kelvin（四端）测量思想（将取样信号尽量靠近 ADC 或放大器输入），减小引线与焊盘电阻及接触电阻的影响。
- 测量前端：选择低偏置电流、低偏置电压漂移的仪表放大器或运放，并考虑共模电压范围（高侧/低侧检测）。加入适当滤波以抑制开关噪声和冲击电流影响。
- 焊接工艺：兼容标准回流焊，遵循厂商的回流温度曲线与 IPC 焊接建议，避免过热与机械应力。
五、可靠性与测试
- 建议在量产前进行四线测量、温升测试与循环功率老化试验，评估长期漂移与热电势效应。
- 考虑热冲击与焊接振动对贴片电阻的影响，做机械可靠性验证。
- 对于高精度应用，建议在工作温度范围内进行温度漂移校准与补偿。
六、选型与注意事项
- 若系统需更低压降或更高稳定性，可选更大功率或更低 TCR 的分流器；若需简单安装与更小外形，可考虑更小封装但注意额定功率限制。
- 设计时应平衡电压信号大小、损耗与热管理，对关键测量点进行额外校准以保证系统精度。
RLP25FEER001 以其 1mΩ/±1% 的高精度及 2W 的额定功率，适用于多数中大电流检测场合，配合合理的 PCB 热设计与测量电路，可在电源管理与动力系统中提供稳定可靠的电流采样解决方案。
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