Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
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PESDHC3D3V3U 是 Prisemi(芯导)推出的一款单向瞬态抑制二极管(TVS),封装为 SOD-323,专为 3.3V 供电/信号线的静电放电与浪涌保护设计。器件在反向静态条件下的额定反向截止电压(Vrwm)为 3.3V,击穿电压 V(BR) 约为 5V,可作为 3.3V 系统的前端保护元件。
PESDHC3D3V3U 可在大能量瞬态(如静电放电或电源浪涌)发生时迅速导通,将瞬态能量钳位到安全电压范围,从而保护后端敏感器件。小封装(SOD-323)适合空间受限的便携设备和高密度板级设计。低漏电流保证在正常工作状态下对电路影响极小;较高的 Ipp 与 Ppp 使其能抵御常见的 8/20μs 浪涌冲击。
适用于 3.3V 的接口与电源防护,如 MCU/FPGA I/O 端口、串行接口、传感器信号输入、射频前端保护、移动设备与物联网终端等。需注意:280 pF 的结电容在一些超高速或高频差分信号线上可能影响信号完整性,应在选型时评估对带宽的影响。
SOD-323 封装便于自动贴装;推荐将 TVS 器件靠近被保护的外部接口或连接器放置,缩短走线长度以降低寄生电感。器件的阴极应接地或接公共参考地,增加回流地铜箔与过孔以改善散热与大电流回流路径。避免将 TVS 用作持续导通器件,仅用于瞬态抑制。
PESDHC3D3V3U 为 3.3V 系统提供了在小尺寸封装下具备高能量吸收能力的瞬态保护选择,适合追求空间效率且需可靠防护的电子产品设计。有关更详细的电气特性、机械尺寸与封装信息,请参阅官方器件数据手册。
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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.
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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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