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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JDTfuse(集电通)推出的ASMD2920-400是一款专为低压电路设计的表面贴装自恢复保险丝,核心用于过流/过温故障保护,兼具“故障后自动恢复”与“低功耗导通”特性,适配电子设备小型化、高可靠性的应用需求。
ASMD2920-400属于聚合物正温度系数(PPTC)自恢复保险丝,区别于传统一次性保险丝:当电路出现过流(如短路、过载)或过温时,器件阻值快速骤增切断电流;故障排除后(如短路解除、温度回落),阻值自动恢复至低阻状态,无需人工更换,可重复使用,显著降低系统维护成本与停机时间。
ASMD2920-400的核心参数精准匹配低压设备保护需求,关键指标如下:
ASMD2920-400采用2920表面贴装封装(尺寸约2.9mm×2.0mm),属于小型化贴片规格,适配自动化贴装工艺,可有效节省PCB空间,符合当前电子设备“轻薄化”的设计趋势。封装设计兼顾散热与可靠性,能快速传递过温信号触发保护,同时避免机械应力对器件性能的影响。
ASMD2920-400的参数特性使其适配多类低压设备的保护需求,典型应用包括:
综上,JDTfuse ASMD2920-400自恢复保险丝以“自恢复特性+低功耗+宽温适应”为核心优势,是低压电路过流/过温保护的高性价比选择,可满足消费电子、工业、车载等多领域的可靠性需求。
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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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