WMSIC Electronic Components

TA-I RL12FTNR280

ModelRL12FTNR280
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
RL12FTNR280
Type
TA-I Technology
Minimum package
5000 圆盘

Technical parameters

Power
500mW
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RL12FTNR280
Electronic Component
1
Package
1206
Electronic Component
Current Sense Resistor / Shunt
Electronic Component
±1%
Electronic Component
0.023g
Electronic Component
280mΩ
Electronic Component
1
Electronic Component
BM0265427449
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.

RL12FTNR280电流采样电阻产品概述

RL12FTNR280是大毅科技推出的一款贴片式电流采样/分流电阻,采用1206通用封装,专为中低功率场景下的电流检测设计,兼具精度稳定、体积紧凑、安装便捷等特性,广泛适配消费电子、工业控制、通信设备等领域的电流监控需求。

一、产品核心定位与应用场景

作为一款电流采样/分流电阻,RL12FTNR280的核心作用是将电路中的电流转换为可测量的电压信号(遵循欧姆定律(V=I\cdot R)),为系统提供电流反馈以实现保护、控制或计量功能。其典型应用场景包括:

  1. 消费电子:手机、平板、笔记本电脑的充电模块(检测充电电流,防止过充)、智能穿戴设备的功耗监控;
  2. 工业控制:小功率电机驱动电路(电流过载保护)、低压电源模块(输出电流调节);
  3. 通信设备:基站电源、路由器电源的电流采样(负载监测);
  4. 智能家居:智能插座、智能家电的功耗统计(电流→功率换算)。

二、关键参数详解

RL12FTNR280的核心参数针对电流采样场景做了针对性设计,具体如下:

  1. 阻值:280mΩ(0.28Ω)
    中等阻值设计,既避免低阻值带来的电压信号过弱(易受噪声干扰),又减少高阻值带来的功率损耗,适配1A~40A范围内的电流采样(最大电流计算:(I_{max}=\sqrt{P/R}=\sqrt{0.5W/0.00028Ω}≈42.3A));
  2. 精度:±1%
    满足绝大多数工业级和消费级场景的采样精度需求,无需额外校准即可实现可靠的电流检测;
  3. 功率:500mW(0.5W)
    额定功率覆盖中低功率场景,实际使用建议降额至80%(400mW)以延长寿命;
  4. 温度系数:±200ppm/℃
    表示温度每变化1℃,阻值变化±200×10⁻⁶倍。以100℃温差为例,阻值变化约0.0056Ω(变化率≈2%),对于一般电流采样场景(非高精度计量)足够稳定;
  5. 封装:1206(英制)
    尺寸为3.2mm×1.6mm,是贴片电阻的通用封装之一,供应链成熟、成本可控,适配自动化贴装工艺。

三、封装与安装特性

RL12FTNR280采用1206贴片封装,具备以下安装优势:

  1. 体积紧凑:3.2×1.6mm的尺寸可大幅节省PCB空间,适配小型化产品设计(如智能穿戴、微型电源);
  2. 安装便捷:兼容回流焊、波峰焊工艺,符合IPC-A-610焊接标准,焊接可靠性高;
  3. 引脚设计:采用端电极结构,与PCB焊盘接触面积合理,减少虚焊风险;
  4. 耐热性能:支持-55℃~155℃的工作温度范围,适配工业环境的高低温变化。

四、性能优势分析

  1. 精度一致性好:大毅科技的生产工艺确保批量产品的阻值偏差控制在±1%以内,无需逐个校准即可批量使用;
  2. 功率适配性强:500mW额定功率覆盖主流中低电流场景,避免因功率余量不足导致的过热失效;
  3. 抗干扰能力:280mΩ阻值产生的电压信号(如10A电流对应2.8V电压)不易受电路噪声干扰,采样准确性高;
  4. 成本可控:1206通用封装及成熟工艺,使得产品性价比突出,适合大规模量产应用。

五、选型与使用注意事项

为确保RL12FTNR280的稳定工作,需注意以下要点:

  1. 功率降额:实际工作功率建议不超过400mW(额定功率的80%),避免长期过载导致阻值漂移;
  2. 温度范围确认:确认工作环境温度在-55℃~155℃范围内,超出此范围可能影响阻值稳定性;
  3. 焊接工艺:采用标准回流焊温度曲线(峰值温度240℃~260℃,时间≤10s),避免热冲击导致封装损坏;
  4. 电路设计:采样电阻应串联在被测电流路径中,避免并联干扰;布线时尽量缩短采样电阻到放大器的距离,减少寄生电感影响。

综上,RL12FTNR280是一款高性价比的贴片电流采样电阻,凭借稳定的精度、适配的功率及通用封装,成为消费电子、工业控制等领域电流检测的优选器件。

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.