WMSIC Electronic Components

RALEC LR2512-23R005F4 LR2512

ModelLR2512-23R005F4
Package2512
BrandRALEC
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

13 specifications

Core information

Product name
RALEC LR2512-23R005F4
Type
RALEC
Minimum package
4000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RALEC
Electronic Component
LR2512-23R005F4
Electronic Component
1
Package
2512
Electronic Component
0.061g
Electronic Component
1
Electronic Component
BM0265966498
Electronic Component
Electronic Component
Electronic Component
4000

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

RALEC旺诠LR2512-23R005F4电流采样电阻产品概述

一、产品核心定位与应用场景

LR2512-23R005F4是RALEC(旺诠)推出的贴片式电流采样电阻/分流器,核心定位为中功率场景下的高精度电流监测与过流保护元件。其应用覆盖三大核心领域:

  • 新能源汽车:电池管理系统(BMS)中电池模组/单体的电流采样、电机控制器的驱动电流监测;
  • 工业设备:变频器、伺服驱动器的电机电流检测,光伏逆变器的并网电流监测;
  • 消费电子:65W及以上快充适配器的过流保护电路、智能家电的功率监测模块。
    该产品通过低阻值、高精度设计,可适配数十至数百安培的大电流场景,同时满足自动化贴装的生产效率需求。

二、关键性能参数解析

产品参数围绕“电流采样精度+功率可靠性”优化,核心参数及实际意义如下:

  1. 阻值:5mΩ(毫欧级)
    低阻值是分流器的核心要求——根据功率公式(P=I^2R),5mΩ可在100A电流下将功率损耗控制在5W(需结合降额设计),避免设备过热;同时低阻值可降低采样信号的电压降,适配小信号放大电路的输入范围。
  2. 精度:±1%
    采样精度直接影响系统电流计算准确性(如BMS的SOC估算误差)。±1%的精度在工业级分流器中属于较高水平,可满足大多数场景的监测需求(如汽车BMS要求精度≤2%)。
  3. 额定功率:3W
    额定功率3W是常温(25℃)下的连续工作功率,实际使用需遵循旺诠的降额曲线:环境温度每升高1℃,功率需降低0.012W(120℃时功率降为1.5W),确保长期可靠性。
  4. 温度系数(TCR):±25ppm/℃
    TCR表示阻值随温度的变化率,±25ppm/℃意味着温度每变化100℃,阻值仅变化12.5μΩ((5mΩ×25e-6×100)),宽温环境下(如汽车-40℃~+125℃)仍能保持稳定采样精度。
  5. 型号编码说明:LR(旺诠分流器系列)+2512(封装尺寸)+23R005(阻值编码,005对应5mΩ)+F4(精度±1%+TCR±25ppm/℃)。

三、封装与安装特性

采用2512贴片封装(英制:250mil×120mil,公制:6.35mm×3.05mm),具备以下优势:

  • 自动化贴装适配:符合SMT产线标准,可通过回流焊/波峰焊实现批量生产,生产效率远高于插件电阻;
  • 散热设计优化:2512封装的焊盘面积(约20mm²)可有效传导热量,PCB设计时建议在焊盘下方增加铜箔(≥1oz),进一步提升散热能力;
  • 抗振动性能:贴片封装无引脚,焊接后与PCB结合紧密,可耐受汽车级振动测试(10~2000Hz,1g加速度),适合车载等振动场景。

四、品牌与可靠性保障

RALEC(旺诠科技)是全球知名的功率电阻制造商,拥有30+年专业经验,该产品具备以下可靠性:

  • 环保合规:符合RoHS 2.0、REACH等国际环保标准,无铅无卤;
  • 可靠性测试:通过高低温循环(-55℃~+150℃,1000次)、湿热测试(85℃/85%RH,1000h)、振动测试等,确保工业级/汽车级应用的长期稳定性;
  • 寿命保障:在额定条件下,MTBF(平均无故障时间)≥10^6小时,满足设备5~10年的使用寿命要求。

五、典型应用案例

  1. 新能源汽车BMS:某车企的磷酸铁锂电池模组采用该电阻作为电流采样元件,5mΩ阻值适配150A持续电流,±1%精度使SOC估算误差控制在±1.5%以内;
  2. 工业变频器:某伺服驱动器厂商将其用于电机电流监测,3W功率满足启动时的瞬时功率需求,±25ppm/℃TCR保证-20℃~+80℃环境下的采样稳定性;
  3. 65W快充适配器:某品牌快充适配器采用该电阻作为过流保护采样,贴片封装缩小了适配器体积,5mΩ阻值降低了待机功耗(<0.01W)。

总结

RALEC旺诠LR2512-23R005F4电流采样电阻通过“低阻值+高精度+稳定TCR+贴片封装”的组合,精准匹配中功率电流监测场景的需求,是新能源汽车、工业设备、消费电子领域的高性价比选择。其可靠性与兼容性经市场验证,可有效提升系统的电流监测精度与设备稳定性。

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.