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TA-I Technology RLM12FTCMR006
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- RLM12FTCMR006
- Type
- TA-I Technology
- Minimum package
- 5000 圆盘
Technical parameters
- Power
- 1W
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- RLM12FTCMR006
- Electronic Component
- 1
- Package
- 1206
- Electronic Component
- Current Sense Resistor / Shunt
- Electronic Component
- ±1%
- Electronic Component
- 0.03g
- Electronic Component
- 6mΩ
- Electronic Component
- 1
- Electronic Component
- BM0264549227
- Electronic Component
- SMD
- Resistor Type
- Current Sense Resistor
- Electronic Component
- Electronic Component
- Electronic Component
- 5000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
RLM12FTCMR006 产品概述
一、产品简介
RLM12FTCMR006 是大毅科技推出的一款贴片式采样电阻（合金电阻），封装为 1206，阻值 6 mΩ，精度 ±1%，额定功率 1 W。该器件以低阻值、高稳定性和良好热性能为特点，适用于电流检测、功率管理和保护类电路中的电流取样场合。
二、主要性能参数
- 阻值：6 mΩ（0.006 Ω）
- 初始精度：±1%
- 额定功率：1 W（需结合 PCB 散热条件考虑）
- 封装：1206（贴片）
- 结构：合金低阻采样电阻
- 典型最大允许电流：约 12.9 A（由 P = I^2·R 计算得出，I = sqrt(1W / 0.006Ω) ≈ 12.9A）
- 在 10 A 时的压降约 60 mV（V = I·R）
注：以上电流/功率计算为理想情形，实际连续允许电流须根据 PCB 铜箔面积、热通道与环境温度做温度降额处理。
三、典型应用场景
- 电池管理系统（BMS）电流监测
- 开关电源与电机驱动电流取样
- 过流检测与保护电路
- 电源管理与能量计量模块
- 高电流分流器与电流采样放大器配套使用
四、PCB 与热设计建议
- 对于低阻值采样电阻，散热主要依靠铜箔和焊盘，建议使用加宽铜箔并在焊盘下添加通孔（thermal vias）向内层或底层扩散热量。
- 在靠近器件两侧保留较大的焊盘以提高热传导与电流承载能力。
- 设计时考虑温度降额：环境温度升高或铜箔不足时，应相应降低允许连续电流。
- 建议将电阻放置于测量放大器附近并保证良好散热路径，以减少温漂对测量精度的影响。
五、连接与测量注意事项
- 建议采用四端（Kelvin）测量或四线布局：两端承流宽焊盘，两端独立感测点，以消除端接电阻对测量的影响。
- 采样信号常由差分放大器或专用电流检测放大器连接，若信号较小（几十毫伏级），应注意布局以降低噪声与共模干扰，必要时并联滤波或屏蔽。
- 自热效应：在高电流下电阻会产生自热，导致阻值随温度上升而变化，长期测量应考虑热平衡时间与温度系数影响，并在系统校准中予以补偿。
六、封装、可靠性与选型建议
- 1206 贴片封装适合自动化贴装与回流焊工艺，满足工业级装配要求。
- 合金材质提供较好的长期稳定性与抗冲击性能，但在极端环境（高温、高潮、化学腐蚀）下仍需结合封装与保护工艺评估使用寿命。
- 选型时若系统需更小压降或更高精度，可考虑更低阻值或更高功率等级的采样电阻，并注意匹配放大器的输入范围与系统测量分辨率。
七、结论
RLM12FTCMR006（大毅科技）为一款适用于中高电流检测的 1206 贴片合金采样电阻，6 mΩ、±1% 与 1 W 的组合在电池管理、电源监控与过流保护等应用中具有良好性价比。合理的 PCB 热设计、四线测量与系统校准可最大限度发挥其测量精度与稳定性。若需在极限电流或高温环境下长期使用，建议与供应商确认温度系数与长期漂移数据，并进行实测验证。
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