WMSIC Electronic Components

TA-I RLH12FTCR820

ModelRLH12FTCR820
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
RLH12FTCR820
Type
TA-I Technology
Minimum package
5000 圆盘

Technical parameters

Power
1W
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RLH12FTCR820
Electronic Component
1
Package
1206
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.035g
Electronic Component
820mΩ
Electronic Component
1
Electronic Component
BM0264899884
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.

大毅科技RLH12FTCR820 贴片采样电阻产品概述

大毅科技RLH12FTCR820是一款专为电流采样设计的贴片合金电阻,采用1206标准封装,凭借精准的阻值控制、稳定的温度特性及1W功率承载能力,广泛应用于电池管理、电机驱动、电源系统等领域,是工业与消费类电子中平衡性能与成本的优选元件。

一、产品定位与核心参数

RLH12FTCR820聚焦低阻电流采样场景,核心参数适配常规工业/消费类电子的电流监测需求:

  • 阻值:820mΩ(低阻范畴,既保证ADC采样所需的电压降,又避免高阻导致的功率损耗);
  • 精度:±1%(满足大多数常规电流监测,无需额外校准即可实现可靠反馈);
  • 功率:1W(1206小封装下实现高功率密度,适配紧凑电路布局);
  • 温度系数:±100ppm/℃(每℃阻值变化约0.0082mΩ,-40℃~85℃温区内总变化量<0.066%,稳定性优异);
  • 封装/安装:1206贴片式(兼容自动化SMT生产线,焊接工艺成熟)。

二、关键性能优势

  1. 精准稳定的采样能力
    采用合金膜真空沉积+激光调阻工艺,阻值一致性好,±1%精度与低温度系数确保宽温范围内电流采样无偏差,避免因温度变化导致的过流误判或SOC(荷电状态)计算误差。

  2. 高功率密度设计
    1206封装实现1W功率承载,比同封装常规电阻(0.25W0.5W)提升24倍,可承受电机启动、电池充放电等场景的瞬间峰值电流,无需额外并联电阻。

  3. 环境适应性强
    符合RoHS无铅环保标准,耐温范围覆盖-55℃125℃(工业级宽温),耐湿(85℃/85%RH,1000h)、耐振动(10G/502000Hz)性能满足复杂工况需求。

  4. 低寄生参数
    合金膜结构降低了寄生电感与电容,适合高频采样场景(如开关电源瞬态电流监测),减少信号失真,提升反馈精度。

三、典型应用场景

RLH12FTCR820的性能适配多领域电流采样需求:

  1. 新能源电池管理(BMS):电动汽车、储能电站的单体电池充放电电流采样,820mΩ阻值适配1~10A常规电流范围,精度满足SOC计算;
  2. 电机驱动电路:直流电机、BLDC无刷电机的电流反馈回路,1W功率可承受启动瞬间峰值电流,保护电路稳定;
  3. 开关电源/适配器:输出端电流采样,实现过流保护、恒流输出控制,1206封装适配电源模块紧凑设计;
  4. 工业控制设备:PLC、变频器、伺服系统的电流监测,宽温稳定性适合车间、户外多变环境;
  5. 消费类电子:笔记本电脑、充电器的电池保护电路,平衡性能与成本,提升产品可靠性。

四、封装与可靠性细节

1206封装尺寸为3.2mm×1.6mm,符合IPC-J-STD-020标准,引脚采用镀锡工艺,回流焊兼容性好,焊接强度高;大毅针对采样电阻的特殊工艺包括:

  • 合金膜真空沉积:提升阻值一致性;
  • 端电极强化处理:耐焊接热性能提升30%,减少虚焊风险;
  • 可靠性验证:通过UL认证、振动测试(10G/50~2000Hz)、过负载测试(2.5倍功率,5s),确保长期使用无失效。

五、选型适配建议

  1. 电流容量计算:根据P=I²R,最大连续电流约1.1A,实际建议降额30%50%(长期电流≤0.55A0.77A),避免过热;
  2. 精度升级:若需±0.5%高精度,可选择同系列RLH12FTCR820F(成本略高);
  3. 并联扩展:如需2A5A大电流采样,并联24个RLH12FTCR820,阻值变为410mΩ/205mΩ,功率提升至2W/4W;
  4. 温区确认:若环境温度>125℃,需更换大毅高温系列(如RLH12HTCR820)。

总结

大毅科技RLH12FTCR820以精准稳定、高性价比为核心优势,覆盖工业、新能源、消费电子等多领域电流采样场景,是工程师优化电路设计的可靠选择。

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