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大毅科技推出的RLP25FEER400是一款专为中等功率大电流精准检测设计的贴片式合金电流采样电阻,属于功率型分流器范畴。该产品凭借高功率密度、低阻值精度稳定等特性,广泛适配工业、新能源、消费电子等领域的电流闭环控制与过流保护场景。
RLP25FEER400聚焦“高功率密度+稳定精度”的采样需求,解决传统电阻功率不足、温度漂移大的痛点,核心应用覆盖三大领域:
该产品的核心参数直接支撑其应用价值,具体如下:
参数项 规格值 性能意义 阻值 400mΩ(±1%精度) 低阻适配大电流,满足工业级精度 额定功率 2W(25℃环境) 功率密度高于普通贴片电阻30%以上 温度系数(TCR) ±50ppm/℃ 100℃温差下阻值漂移≤0.375% 封装 2512(SMD) 尺寸6.4×3.2mm,适配自动化贴装 耐温范围 -55℃~125℃ 宽温适应工业/户外环境核心优势:
RLP25FEER400采用2512标准贴片封装,兼顾生产效率与环境适应性:
开关电源输出电流需精准控制以保护负载,RLP25FEER400串联在输出回路中,通过采样电压(V=I×R)反馈至控制芯片,实现过流保护与输出调节。2W功率适配100W500W电源的10A50A电流检测。
10kWh以下储能电池组需监测充放电电流,RLP25FEER400可准确采集10A~60A电流,配合BMS实现实时保护,宽温特性适应户外储能的温度变化。
快充需精准匹配设备充电需求,RLP25FEER400的±1%精度保证采样误差≤0.4mV(1A电流下),满足PD3.0等快充协议的电流精度要求。
为确保性能稳定,需注意以下要点:
总结而言,RLP25FEER400以“高功率密度+稳定精度+宽温适应性”为核心,精准匹配中等功率大电流采样场景,是工业、新能源、消费电子领域的高性价比选择。
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