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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BT138D-800E 是一款由 UMW(友台半导体)提供的双向可控硅(TRIAC),定位为标准 800 V、12 A 的表面贴装功率器件。器件采用 TO-252 封装,适合在受限空间内实现交流电路的可靠通断与相位控制,广泛用于家电、照明调光、温控及小功率电机控制等应用。
这些参数表明 BT138D-800E 在中等功率的交流开关场合表现稳定,具备较高的耐压和短时浪涌能力。
TO-252(表面贴装)封装有利于自动贴装与回流焊工艺,但与传统塑封 TO-220 相比散热能力有限。使用时建议:
选型时应综合考虑断态耐压、平均/峰值电流及环境温度。如工作环境常有较大浪涌或需要更低门极驱动电流,可评估更高浪涌能力或低触发电流型号。门极驱动电流 Igt 为 50 mA,门极触发电压约 1.5 V,驱动电路需能提供稳定的触发脉冲并避免长期大功率耗散超过 PG(AV)=1 W。实际电路中,添加合适的门极阻抗、RC 缓冲和过流保护,可显著提升系统可靠性。
总结:BT138D-800E 为一款性能均衡、适合表面贴装的 800 V/12 A TRIAC,适用于多种中低功率交流控制场景,若重视散热与门极驱动设计,可获得长期稳定的工作表现。
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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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