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
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
LM4871DQ2/TR 是一款针对便携与消费类音频设备设计的单声道 AB 类音频功率放大器,额定输出可达 2.9W(4Ω,典型),在 2.5V~5.5V 的单电源供电下工作。器件集成了自动静音/免噪音开关与使能/关断控制,静态电流仅 2mA,适用于对功耗与音质有均衡要求的系统。
DFN-8(2x2)小尺寸有利于高密度 PCB 布局,但需注意功率耗散。建议在 PCB 对应焊盘下方设计充足的散热通孔与铜箔过孔,并将大面积地或电源平面连接到散热焊盘以降低结壳温升,确保在高功率工作点下器件可靠性。
在选型时除关注额定输出功率外,应评估系统实际供电电压、扬声器阻抗以及散热条件;若长期在高 SPL 下工作,需按 PCB 散热策略进行充足热设计。对于要求更低失真或更高输出功率的场合,可考虑更高电压或桥接/立体声解决方案。
以上为 LM4871DQ2/TR 的产品概述与设计建议,可作为系统设计与快速评估的参考。若需详细电气参数、典型应用电路或封装图纸,请提供进一步信息以获得针对性的资料。
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Use the form for single models, category sourcing, and multi-line BOM requirements.
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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