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.
PESD3V3S1UB 是 DOWO(东沃)推出的一款面向 3.3V 系统的双向单路瞬态抑制器(TVS 二极管),采用超小型 SOD-523 封装。器件专为保护敏感信号线和接口免受静电放电(ESD)、电快速瞬变(EFT)及浪涌(Surge)损害而设计,兼容多项工业级抗扰度标准,适合高密度、低功耗电子设备应用。
SOD-523 封装体积小,适用于空间受限电路板。布局建议:保护器件应尽量靠近被保护引脚(靠近连接外部线路或接口),并保证引脚到接地面的低阻抗短回路路径;对于高能量浪涌,可配合串联阻抗(如微阻或磁珠)与低阻抗接地共同使用以降低钳位电压和吸收更多能量。
器件通过 IEC 61000-4-2(ESD)、IEC 61000-4-4(EFT)、IEC 61000-4-5(浪涌)相关测试验证,适用于要求电磁兼容(EMC)保护的产品设计。SOD-523 封装便于自动贴片组装,适配常见回流焊工艺。
PESD3V3S1UB 提供了面向 3.3V 系统的高效双向瞬变保护,适合对体积、成本和基本抗扰度有要求的电子产品。设计时应综合考虑结电容对信号的影响与钳位电平对被保护器件的耐压要求,必要时配合限流与分级防护以获得更稳健的系统可靠性。
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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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