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.
GR品牌LM393是一款通用型双路电压比较器,采用SOP-8贴片封装,具备宽电源范围、低功耗、开漏输出等核心特点,可直接替代传统LM393系列产品,广泛应用于工业控制、消费电子、通信设备等领域的电平检测、过欠压保护等场景。
GR LM393定位于通用低功耗双路比较器,专为对精度要求适中、需多路信号对比的场景设计,核心应用包括:
GR LM393的核心参数适配多数通用场景,关键指标及实际意义如下:
GR LM393采用SOP-8贴片封装,具备以下优势:
电路原理:通过分压电阻(R_1/R_2)设定过压阈值(如12V系统设为13.5V),当输入电压(V_{IN})高于阈值时,比较器输出低电平(开漏拉低),触发MCU或继电器保护;若低于阈值则输出高阻态(上拉电阻拉至高电平)。
用两路比较器分别设置上限阈值(V_H)和下限阈值(V_L):当(V_L<V_{IN}<V_H)时,两路比较器输出均为高阻态,上拉后输出高电平;若超出区间则至少一路输出低电平,实现“信号在窗口内/外”的判断。
GR LM393以高性价比、宽适配性成为通用比较器的优选方案,可满足多数工业控制、消费电子的信号对比需求。
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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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