Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
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Technical data
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RALEC(旺诠)LR2512-23R0075F4是一款专为精密电流检测、中等功率负载设计的贴片低阻值电阻,采用2512标准贴片封装,核心参数覆盖低阻(7.5mΩ)、高精度(±1%)、高功率密度(3W)及稳定温度系数(±25ppm/℃),广泛适用于电源管理、电池系统、工业控制等对空间、精度有要求的场景。
该产品核心参数聚焦“低阻+高精度+高功率”,适配电流检测、功率分流等典型需求,具体参数及实际意义如下:
该产品采用2512标准贴片封装,兼顾空间效率与安装兼容性:
公制尺寸为6.4mm(长)×3.2mm(宽)×0.55mm(厚),符合国际电子封装标准,可直接兼容Altium、Cadence等主流PCB设计软件的封装库,无需额外定制。
采用氧化铝(Al₂O₃)陶瓷基片,热导率约25W/m·K,可快速 dissipate 功率产生的热量,降低自身温度,延长使用寿命(相比普通树脂基片,导热效率提升3倍以上)。
低阻高精度,减少功率损耗
7.5mΩ低阻配合±1%精度,可在大电流下降低功率损耗(P=I²R)——例如10A电流下,损耗仅0.75W,远低于100mΩ电阻的10W损耗,提升系统能效。
高功率密度,适配紧凑设计
2512封装实现3W功率,在有限体积内提供更高功率承载能力,适合空间紧张的PCB设计(如笔记本电源、无人机BMS模块)。
宽温稳定,简化系统设计
±25ppm/℃的TCR保证-40℃~125℃范围内阻值波动极小,无需额外温度补偿电路,降低系统复杂度与成本。
环保可靠,符合行业标准
符合RoHS 2.0、REACH标准(无铅无镉),通过UL、CE认证;旺诠30年电阻制造经验确保产品长期稳定性,平均无故障时间(MTBF)可达10⁶小时以上。
该产品针对电流检测、功率分流等需求,典型应用包括:
综上,RALEC LR2512-23R0075F4凭借“低阻高精度+高功率密度+宽温稳定”的核心优势,成为电源管理、电池系统、工业控制等领域的高性价比选择,适合对空间、精度、可靠性有要求的电子设计。
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Product sourcing intelligence
WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.
Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.
Buyer sourcing scenarios
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.
A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.
The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.
Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.
Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.
When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.
Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.
The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.
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