WMSIC Electronic Components

TA-I Technology RLM12FTCMR015

ModelRLM12FTCMR015
Package1206
BrandElectronic Component
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RLM12FTCMR015
Type
TA-I Technology
Minimum package
5000 圆盘

Technical parameters

Power
1W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLM12FTCMR015
Electronic Component
1
Package
1206
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.03g
Electronic Component
15mΩ
Electronic Component
1
Electronic Component
BM0264549229
Electronic Component
SMD
Electronic Component
±75ppm/℃
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.

大毅科技RLM12FTCMR015 1206封装电流采样电阻产品概述

一、产品定位与核心应用场景

RLM12FTCMR015是大毅科技针对中功率电流检测场景推出的贴片式采样电阻(分流器),主打「低阻高精度、小封装大功率」特性,广泛覆盖以下领域:

  1. 电源管理:DC-DC开关电源、AC-DC适配器的输出电流监测,配合过流保护电路实现电源安全防护;
  2. 电机控制:BLDC无刷电机、伺服电机的电流闭环调节,提升调速精度与动态响应;
  3. 电池管理(BMS):电动工具、小型储能电池包的单体/总电流采样,辅助充放电状态判断;
  4. 工业自动化:PLC模块、变频器的电流检测回路,满足工业环境下的可靠性要求。

该产品以1206紧凑型封装平衡空间占用与性能,是消费电子、工业控制等领域的高性价比选择。

二、关键电气性能参数解析

RLM12FTCMR015的核心参数围绕「低阻采样、功率耐受、精度稳定」三大需求设计,关键指标如下:

1. 阻值与精度

  • 标称阻值:15mΩ(毫欧级低阻,避免过高电压降影响电路效率,适合大电流采样);
  • 精度等级:±1%(量产应用无需额外校准,降低BOM成本与生产复杂度);
  • 阻值范围:14.85mΩ~15.15mΩ(全精度区间一致性良好,批量一致性误差≤0.1%)。

2. 功率与电流能力

  • 额定功率:1W(连续工作最大功率耐受值);
  • 最大电流近似值:( I = \sqrt{P/R} = \sqrt{1W/0.015Ω} ≈ 8.16A )(实际需遵循降额规则,连续工作建议不超过6.5A);
  • 脉冲功率:支持短时间脉冲(如10倍额定功率/1ms),需参考 datasheet 降额曲线。

3. 温度系数(TCR)

  • 典型值:±75ppm/℃(温度每变化1℃,阻值变化±1.125μΩ);
  • 温域范围:-55℃~125℃(工业级宽温,适应极端环境);
  • 阻值变化率:全温域内阻值变化≤±0.15%,满足多数应用的温度稳定性需求。

三、封装与物理特性

RLM12FTCMR015采用1206贴片封装(公制尺寸:3.2mm×1.6mm×0.5mm),具备以下优势:

  1. 贴装兼容性:符合IPC-A-610标准,支持自动化SMT贴装,焊接效率高;
  2. 空间优化:紧凑型设计节省PCB布局空间,适合高密度电路;
  3. 电极工艺:两端采用镍/锡镀层,焊接附着力强,抗硫化性能优于普通镀层;
  4. 电阻体材料:采用锰铜合金电阻体,稳定性优于碳膜/金属膜电阻,低噪声、低漂移。

四、可靠性与环境适应性

大毅科技通过多项可靠性测试,确保产品满足工业级要求:

  1. 环保认证:符合RoHS 2.0、REACH法规,无铅无卤;
  2. 焊接可靠性:回流焊260℃/10s、波峰焊245℃/5s,无焊接缺陷;
  3. 机械可靠性:振动(10~2000Hz,2g加速度)、冲击(100g/6ms)符合IEC 60068-2-6/27标准;
  4. 耐温老化:125℃下1000小时老化,阻值变化率≤0.5%,性能稳定。

五、选型与应用注意事项

为确保最佳性能,需注意以下要点:

  1. 降额使用:连续工作功率建议不超过额定值的80%(0.8W),避免长期过热;
  2. PCB设计:采样电阻两端需短路径布线(减少寄生电感),避免与高频信号交叉;
  3. 散热优化:若功率接近额定值,可在PCB增加散热铜箔,提升热传导效率;
  4. 精度校准:若需更高精度(±0.5%),可抽样校准或配合运放/ADC实现数字校准。

综上,RLM12FTCMR015以高性价比、稳定可靠的特性,成为中功率电流采样场景的主流选择,适配多领域的量产需求。

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