WMSIC Electronic Components

TA-I RL12FTNR180

ModelRL12FTNR180
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
RL12FTNR180
Type
TA-I Technology
Minimum package
5000 圆盘

Technical parameters

Power
500mW
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RL12FTNR180
Electronic Component
1
Package
1206
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.03g
Electronic Component
180mΩ
Electronic Component
1
Electronic Component
BM0265427473
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.

大毅科技RL12FTNR180电流采样电阻产品概述

一、产品核心定位与典型应用场景

RL12FTNR180是大毅科技推出的1206封装贴片式精密电流采样电阻,属于分流器类低阻功率电阻,核心定位为中功率场景下的高精度电流检测组件。其应用覆盖多个领域:

  • 电池管理系统(BMS):电动车、储能电池的充放电电流实时检测,辅助控制充放电倍率,防止过流/欠流故障;
  • 电源管理:DC-DC转换器、开关电源的输出电流采样,实现过流保护、恒流控制或反馈调节输出电压;
  • 电机驱动:小型伺服电机、无刷电机的绕组电流检测,优化电机控制精度,避免过载烧毁;
  • 车载电子:车载充电器、车窗/座椅电机、车灯控制的电流监测,满足车载环境的振动与温度要求;
  • 工业控制:PLC、变频器的电流反馈回路,实现设备运行状态监控与故障预警。

二、关键参数与性能优势解析

RL12FTNR180的核心参数围绕“低阻、精密、稳定”设计,关键指标及应用价值如下:

  • 阻值与精度:180mΩ(毫欧级)±1%。低阻值可降低电流采样压降(I×R),减少电路功率损耗;±1%精度覆盖多数工业级应用的误差需求,无需额外校准即可实现可靠采样;
  • 功率容量:500mW(0.5W)。通过公式 ( I = \sqrt{\frac{P}{R}} ) 计算,理论最大电流约52.7A;实际应用建议降额至80%(400mW),对应最大电流约46.7A,满足中功率场景需求;
  • 温度系数(TCR):±200ppm/℃。该参数表示每升高1℃,阻值变化百万分之200,在1206封装电阻中属于较高稳定性水平——例如100℃温度变化下,阻值仅漂移±0.02%,可有效降低环境温度对采样精度的影响;
  • 封装与安装:1206贴片封装(公制3216,尺寸3.2mm×1.6mm),兼容SMT自动化生产,焊接可靠性高,适合高密度PCB设计。

三、封装工艺与可靠性特性

大毅科技针对RL12FTNR180采用厚膜合金电阻工艺,结合1206封装的结构设计,具备以下可靠性优势:

  1. 工艺稳定性:厚膜工艺通过丝网印刷、高温烧结形成电阻层,阻值一致性好,批次间偏差≤0.5%;
  2. 散热能力:1206封装的焊盘面积(约1.2mm²)可通过PCB铜箔快速散热,避免电阻本体过热导致阻值漂移;
  3. 环境适应性:常规工作温度范围-55℃~125℃,符合工业级与车载级(若满足AEC-Q200)要求;耐焊接热(260℃回流焊30s)满足SMT生产标准,抗振动冲击(10G/50-2000Hz)能力适合工业与车载场景;
  4. 长期稳定性:额定功率下工作,阻值漂移率≤0.1%/1000h,可保证产品5年以上的采样精度。

四、选型与应用注意事项

为确保RL12FTNR180在电路中稳定可靠,需注意以下要点:

  1. 精度匹配:若应用要求电流采样误差<0.5%,需综合电阻精度(±1%)与TCR的影响(如100℃变化贡献±0.02%),确保总误差满足需求;
  2. 功率降额:实际工作功率建议不超过400mW(额定功率80%),避免过热损坏;
  3. 散热设计:电阻焊盘周围增加≥1.0mm宽的铜箔,或通过过孔连接底层铜箔,增强散热;
  4. 焊接工艺:SMT回流焊需遵循1206封装温度曲线(峰值260±5℃,时间30±5s),避免冷焊或热应力开裂;
  5. 抗干扰:采样电路需与高压、高频信号隔离,可通过滤波电容或屏蔽线降低电磁干扰。

五、总结

RL12FTNR180凭借低阻、精密、稳定的特性,成为中功率电流采样场景的高性价比选择,适用于工业控制、BMS、电源管理等多个领域,可满足多数应用的可靠性与精度需求,是批量生产中替代进口低阻电阻的优质方案。

Request for quote

Send RFQ

Use the form for single models, category sourcing, and multi-line BOM requirements.

Send your target model and quantity.

Product sourcing intelligence

Model, package, availability, and BOM fit reviewed before quotation.

WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.

Electronic component model and package intelligence review on an ESD-safe inspection bench

Model & package intelligence

Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.

BOM matching and alternative component comparison workstation with protected IC samples

BOM matching & alternatives

BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.

Electronic component sourcing availability dashboard with ESD-protected samples

Sourcing availability signal

Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.

Buyer sourcing scenarios

Examples of how common component sourcing requests are organized.

Typical RFQ scenarios based on the WMSIC form fields, catalog data, manual review steps, and shipment preparation workflow.

The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.

Package confirmation Typical RFQ workflow

A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.

Mixed BOM triage Typical RFQ workflow

The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.

Obsolete-part review Typical RFQ workflow

Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.

Small-batch request Typical RFQ workflow

Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.

Repair batch evidence Typical RFQ workflow

When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.

Model suffix clarification Typical RFQ workflow

Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.

Export handoff Typical RFQ workflow

The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.

Replenishment inquiry Typical RFQ workflow

Related products

Packaged components ready for RFQ.