Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
Available for RFQ
Technical data
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
FNR4018S1R5MT 是长江微电(cjiang)推出的一款表面贴装功率电感,额定电流3.2A,饱和电流4A,标称电感值1.5uH(±20%)。器件采用磁胶屏蔽结构,尺寸约4×4mm,适用于中小功率开关电源和电源滤波场合,兼顾高电流承载与较低电阻损耗。
磁胶屏蔽设计有效抑制外泄磁场,减少对邻近元件的干扰;SMD 封装便于自动化贴装,尺寸小巧(4×4mm)有利于高密度布局。线圈与磁芯采用优化工艺以兼顾饱和性能与温升控制。
为确保长期可靠性,建议在设计中对电感进行电流余量考虑:连续工况下尽量让实际工作电流低于额定电流(留有热余量);避免长期接近饱和电流以免电感量下降。推荐将电感置于靠近开关管与电容的位置,减小走线环路面积;为改善散热可在封装下方增加过孔或铜箔散热路径。并配合低ESR输出电容与合理的布局布线,以获得最佳转换效率和低纹波。
选购时请确认型号与封装一致并索取样片及规格书(Datasheet)进行温升与电流下的测试验证。同时关注供应方的批次一致性与可靠性认证,便于在量产中保持性能稳定。
Request for quote
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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