WMSIC Electronic Components

TA-I Technology RL12FTNR330

ModelRL12FTNR330
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RL12FTNR330
Type
TA-I Technology
Minimum package
5000 圆盘

Technical parameters

Power
500mW
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RL12FTNR330
Electronic Component
1
Package
1206
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.03g
Electronic Component
330mΩ
Electronic Component
1
Electronic Component
BM0265427448
Electronic Component
SMD
Electronic Component
±200ppm/℃
Resistor Type
Metal Film 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.

RL12FTNR330 电流采样电阻产品概述

RL12FTNR330是大毅科技推出的1206封装贴片电流采样电阻(分流器),针对现代电子设备对高精度、小体积、稳定可靠的电流检测需求设计,广泛适配电源管理、电池管理、电机驱动等多领域应用场景。

一、产品核心定位与应用场景

作为专业电流采样器件,RL12FTNR330通过电压降检测间接实现电流测量(原理:(V=I×R)),核心是平衡精度、功率容量与体积,覆盖以下典型场景:

  • 电池管理系统(BMS):新能源汽车、储能电站的电池单体/模组电流监测,支撑SOC(荷电状态)计算与过充过放保护;
  • 电源类产品:笔记本充电器、工业电源的过流保护电路,实时检测输出电流避免设备过载;
  • 电机驱动:小型直流电机、无刷电机的电流反馈控制,确保转速稳定并防止电机烧毁;
  • 车载电子:车载充电器、LED照明驱动的电流采样,适应汽车宽温(-40℃~85℃)环境;
  • 工业控制:PLC、变频器的电流监测,实现设备故障诊断与安全运行管控。

二、关键参数与性能优势

RL12FTNR330的核心参数经过针对性优化,满足不同场景的检测精度与可靠性要求:

1. 高精度阻值设计

阻值为330mΩ(0.33Ω),精度达到**±1%**,远高于普通电阻±5%的精度标准。该精度可有效减少电流采样误差(误差=±1%×电流值),例如30A采样电流下,误差仅±0.3A,满足BMS、电机驱动等对电流精度敏感的场景需求。

2. 合理功率容量

额定功率为500mW,根据功率公式(P=I²×R),可计算出最大承载电流约为38.9A((I=\sqrt{P/R}=\sqrt{0.5/0.00033})),覆盖大多数中小功率应用(如10~30A的电机驱动、BMS模组电流),无需额外并联电阻,简化电路设计。

3. 稳定温度特性

温度系数(TCR)为**±200ppm/℃**,表示温度每变化1℃,阻值波动仅±0.02%。例如在-40℃~85℃的宽温范围内(温差125℃),阻值最大波动为±0.02%×125=±2.5%,远低于精度误差,确保不同环境下采样数据的一致性。

4. 小型化贴片封装

采用1206封装(尺寸:3.0mm×1.5mm),属于主流贴片规格,具备以下优势:

  • 无引线设计,减少寄生电感/电容,适合高频/高速电流采样;
  • 适配自动化贴装产线,提高生产效率并降低成本;
  • 体积小,节省PCB空间,满足便携式设备、高密度模块的小型化需求。

三、品牌与可靠性背书

RL12FTNR330由大毅科技(Taiwan's 大毅)生产,该品牌是全球知名被动元器件制造商,专注电阻、电容研发制造超30年,产品覆盖消费电子、汽车、工业等领域,核心优势包括:

  • 成熟工艺:采用薄膜电阻技术,确保阻值精度与长期稳定性;
  • 环保合规:符合RoHS、REACH等国际环保标准,无铅无镉;
  • 可靠性验证:通过振动(102000Hz)、温度循环(-55℃125℃)等测试,适应恶劣环境(如车载振动、工业高温);
  • 供应链稳定:全球布局生产基地,保障产品供应与批次一致性。

四、应用设计注意事项

为充分发挥RL12FTNR330的性能,设计时需注意:

  1. 散热设计:高电流(如30A)下电阻会产生热量,需增大PCB焊盘面积(建议≥2mm²),避免局部过热影响阻值;
  2. 采样电路匹配:采用高输入阻抗(≥1MΩ)的运放或ADC进行电压采样,减少负载效应对电阻两端电压的影响,保证采样精度。

总结

RL12FTNR330凭借高精度(±1%)、宽电流承载(≈39A)、稳定TCR(±200ppm/℃)、小型化封装(1206) 等核心优势,成为多领域电流采样的高性价比选择。大毅科技的品牌背书进一步提升了可靠性,适用于从消费电子到工业、车载的各类场景,满足现代电子设备对电流检测的精准与稳定需求。

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