Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
Available for RFQ
Technical data
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
LM239M/TR是华冠半导体(HGSEMI) 推出的四路通用电压比较器,属于LM239系列的国产化衍生型号,采用SOP-14表面贴装封装。该器件专为多通道电压比较、阈值检测场景设计,具备高集成度、宽电源范围、低功耗等核心特点,可直接兼容TTL/CMOS数字电路,适用于工业控制、电池管理、消费电子等多领域,是进口LM239的高性价比替代方案。
内置4路独立电压比较器,单芯片实现多通道并行比较,无需外部扩展额外比较器,有效减少系统元件数量、降低PCB占用面积,简化电路设计复杂度。
采用SOP-14表面贴装封装,尺寸紧凑(标准SOP-14封装尺寸),适合自动化贴片生产,便于高密度PCB布局,适配小型化电子设备。
支持**-25℃~+85℃** 工业级温度区间,可稳定工作于户外、车间等温差较大的环境,满足工业控制、车载电子等场景的可靠性要求。
LM239M/TR的宽电源、多通道特性使其适用于以下场景:
LM239M/TR凭借稳定的电气性能与灵活的应用适配性,成为中低端电压比较场景的优选器件,可有效提升系统设计效率与可靠性。
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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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