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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STN3N40K3 是一款高性能的 N 通道金属氧化物场效应管(MOSFET),专为需要高电压和良好导电性能的应用场景设计。该元件具有高达 400V 的漏源电压(Vdss),并可以承载连续 1.8A 的漏极电流(Id @ 25°C),适用于各种电源管理、开关电源及高端电子设备等领域。
STN3N40K3 的导通电阻(Rds On)在 10V 驱动下,最大值为 3.4Ω(@ 600mA),这个值相对较低,有助于在开关状态下提高能效。这一特性使其在高频应用中表现出良好的散热性能和热管理,极大地提升了元件的可靠性。
STN3N40K3 的栅极电荷(Qg)在 10V 时最大值为 11nC,这对于驱动电路设计至关重要。较低的栅极电荷可以减小电路的驱动功耗,提升整体系统性能。同时,Vgs 最大值为 ±30V,保证了器件在控制电压波动时的可靠性。
该器件的工作温度范围为 -55°C 到 150°C,允许其在苛刻环境下使用。其额定功率耗散为 3.3W(Ta),可适应于大多数现代电子产品的散热需求,这在长时间工作情况下尤其重要。
STN3N40K3 的输入电容(Ciss)在 50V 下最大值为 165pF,提供较高的输入阻抗以及更小的开关时间,从而提升了高频性能。这使得它能够适应快速开关和高频工作的需求,适合应用于开关电源、DC-DC 转换器及其他高频电路。
STN3N40K3 的封装采用了 SOT-223 型表面贴装设计,体积小,适合自动化生产线埋置。该封装形式还使其在空间有限的应用中表现尤为优越,极大地方便了电路板设计和集成,同时也优化了散热表现。
STN3N40K3 可广泛应用于多个领域,包括:
STN3N40K3 是一款设计精良的 N 通道 MOSFET,凭借其高漏源电压能力和较小的导通电阻,成为工业和消费类电子产品中不可或缺的元器件。无论是在开关电源、LED 驱动还是电机控制等各类应用中,STN3N40K3 均能提供卓越的性能和可靠性,为电路设计提供更多可能性。
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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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