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TA-I RLH12FTCR150
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- RLH12FTCR150
- Type
- TA-I Technology
- Minimum package
- 5000 圆盘
Technical parameters
- Power
- 1W
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- RLH12FTCR150
- Electronic Component
- 1
- Package
- 1206
- Electronic Component
- Current Sense Resistor / Shunt
- Electronic Component
- ±1%
- Electronic Component
- 0.03g
- Electronic Component
- 150mΩ
- Electronic Component
- 1
- Electronic Component
- BM0264549225
- Electronic Component
- SMD
- Electronic Component
- ±100ppm/℃
- 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.
RLH12FTCR150 产品概述
RLH12FTCR150 是大毅科技（Dayi Technology）推出的一款高精度采样电阻，属贴片型低阻值电流检测元件，封装为 1206，标称阻值 150 mΩ，精度 ±1%，额定功率 1W，温度系数 ±100 ppm/℃。该系列采用大电极设计与高纯度氧化铝基板，针对高功率耗散和可靠性进行了优化，满足无铅、RoHS 要求，适合各类电源管理与开关电源应用。
一、主要规格
- 阻值：150 mΩ（0.15 Ω）
- 精度：±1%
- 额定功率：1 W（板面散热条件）
- 温度系数（TCR）：±100 ppm/℃
- 封装：1206（贴片）
- 安装方式：SMD（表面贴装）
- 材料与环保：高纯度氧化铝基板；无铅、RoHS 符合
二、结构与散热特点
采用大电极设计、宽焊盘和高纯度氧化铝陶瓷基板，使热量更易向 PCB 及周围空气扩散。对于 1206 尺寸的小型封装，通过优化电极面积与基板导热性能，实现较高的功率耗散能力和良好的热稳定性。
三、性能与计算参考
在额定功率 1W 条件下，连续工作电流约为 I = sqrt(P/R) ≈ 2.58 A，对应压降约 0.387 V。TCR ±100 ppm/℃ 表明随温度变化的阻值漂移较小，配合 ±1% 的初始精度，可以满足一般电源管理系统的电流采样精度要求。短时脉冲电流可超过额定值，但需注意温升与寿命影响。
四、典型应用场景
- 开关电源（SMPS）电流检测与限流监控
- 电源管理与电池保护（BMS）电流采样
- LED 驱动、伺服与小功率电机电流监测
- 功率模块电流分流与过流保护
五、使用与布局建议
- 建议采用四端或 Kelvin 连接方式以降低引线与焊盘误差对测量的影响。
- 提供宽的铜箔散热路径并增设热孔或多层铜平面以提升散热能力。
- 参考厂商回流焊曲线进行贴片工艺，避免过高回流温度与重复焊接造成应力。
- 按实际环境做功率降额，预留余量以延长元件寿命。
六、选型建议
若对温漂或更高精度有更高要求，可考虑更低 TCR 或更高精度（±0.5% / ±0.1%）的采样电阻；若需更大连续功率，应选用更大封装或陶瓷加散热片的功率电阻。总之，RLH12FTCR150 在尺寸与功耗之间提供了良好的平衡，适合对体积与性能均有要求的电源管理设计。
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