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ROHM PMR50HZPFU6L00
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ROHM PMR50HZPFU6L00
- Type
- ROHM
- Minimum package
- 2000 圆盘
Technical parameters
- Power
- 1W
- Electronic Component
- Electronic Component
- Electronic Component
- ROHM
- Electronic Component
- PMR50HZPFU6L00
- Electronic Component
- 1
- Package
- 2010
- Electronic Component
- Current Sense Resistor / Shunt
- Electronic Component
- ±1%
- Electronic Component
- 0.056g
- Electronic Component
- 6mΩ
- Electronic Component
- 1
- Electronic Component
- BM0229305255
- Electronic Component
- ±100ppm/℃
- Resistor Type
- Current Sense Resistor
- Electronic Component
- Electronic Component
- Electronic Component
- 2000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
PMR50HZPFU6L00 产品概述
一、产品简介
PMR50HZPFU6L00 为 ROHM（罗姆）出品的低阻值采样电阻（分流器），标称阻值 6 mΩ，精度 ±1%，额定功率 1 W，温度系数（TCR）±100 ppm/℃，封装为 2010（约 2.0 × 1.0 mm 表面贴装）。该器件适用于空间受限但要求高精度电流测量的电源与电池管理场合。
二、主要性能要点
- 低阻值：6 mΩ，有利于在大电流场合减小压降与能量损耗；
- 高精度：±1% 初始容差，配合低 TCR 可保证测量稳定性；
- TCR：±100 ppm/℃（即 ±0.01%/℃），温度变化对阻值影响较小；
- 功率：1 W（基于良好散热条件），推荐根据 PCB 散热与环境温度做热余量设计；
- 封装：2010 SMD，便于自动贴装与高密度布局。
三、典型应用场景
- 电池管理系统（BMS）电流监测；
- 开关电源 / DC-DC 转换器电流检测；
- 电机驱动与过流保护；
- 充放电与能量计量场合。
四、设计与使用建议
- 功率与温升：功耗按 P = I^2·R 计算。举例：10 A 时 V = 60 mV，P = 1 W（接近额定功率），若长期运行建议降低电流或改善散热；
- 精度项考虑：总体测量误差由初始容差、TCR、焊接与接触电阻及放大器输入误差共同决定；高精度场合建议采用四线（Kelvin）测量/署线或将差分放大器的输入尽量靠近分流器端点；
- 布局：分流电阻应靠近器件电流回路，使用粗宽铜箔保证散热与低附加阻抗，差分放大器走线短直且对称；避免热源邻近以减小热漂移。
- 放大器选择：根据测量电压等级选用差分运放或专用电流检测放大器，注意共模电压范围（高侧/低侧测量差异）。
五、选型注意
- 若系统工作电流接近或超过 10 A，应选更大额定功率或采用并联分摊方案；
- 对极低温漂与长期漂移有严格要求时，需考虑更低 TCR 与更高稳定性器件；
- 考虑焊接工艺对阻值的影响，推荐按厂商回流温度曲线进行焊接。
总体而言，PMR50HZPFU6L00 在小封装下兼顾低阻值与较高精度，适合对空间及能耗有要求的电流检测应用，但需配合合理的热设计与测量放大电路以保证长期稳定性与测量精度。
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