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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FSV20100V 是富芯森美(FUXINSEMI)推出的一款独立式肖特基整流二极管,封装为 TO-277B。其主要电气参数为:正向压降 Vf = 660 mV(@ 20 A)、直流反向耐压 Vr = 100 V、直流最大整流电流 20 A、反向电流 Ir = 100 μA(@ 100 V)。该器件以低正向压降和肖特基特有的快速恢复特性,适用于高效率电源与开关电路中的整流与续流保护。
在满载 20 A 条件下,前向功耗约为 P = Vf × I ≈ 0.66 V × 20 A = 13.2 W,需通过合理散热(散热片或金属基板)将结温控制在安全范围内。器件在高温下反向电流随温度上升会明显增加(100 μA @ 100 V 为典型室温值),因此在高温或高压侧必须考虑漏电增加对系统的影响。具体的热阻(RθJA/RθJC)、最大结温等参数请参阅厂家正式数据手册以作精确热设计与降额计算。
TO-277B 封装便于与散热体良好接触,推荐在设计时预留合适的导热垫或螺栓固定方式以保证热阻有效降低。焊接与安装应遵循热冲击与焊接温度规范,避免长时间在高结温下工作导致寿命下降。大电流引线布局应尽量缩短并使用粗铜箔以降低寄生阻抗。
在选型时,确认系统峰值电流、重复峰值电压和工作环境温度,计算实际损耗并据此选择合适的散热方案和必要的电流余量。若需更详尽的参数(如浪涌电流能力、热阻、机械尺寸与引脚排列等),请索取 FUXINSEMI 官方数据手册或联系供应商获取技术支持。产品型号:FSV20100V,品牌:FUXINSEMI(富芯森美)。
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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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