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.
FM43X334K501EGG是PSA信昌电陶推出的一款高耐压贴片多层陶瓷电容(MLCC),针对工业级、电源类等对耐压、容值稳定性有要求的场景设计,核心参数覆盖330nF容值、500V额定电压、X7R温度特性及1812封装,是中低频电路滤波、耦合的常用选型。
该型号由国内陶瓷电容领域头部厂商信昌电陶(PSA)生产,信昌电陶专注MLCC研发超20年,产品覆盖从通用型到高耐压、高容值的全系列,符合IEC 60384-14等国际标准,在工业控制、电源模块等领域应用广泛。
FM43X334K501EGG属于工业级MLCC,型号命名规则中:
容值为330nF,精度±10%,满足大多数工业电路对容值偏差的要求(如滤波电路的容值波动不影响整体性能)。若需更高精度(如±5%),需参考信昌其他对应型号。
额定电压为500V DC(MLCC额定电压通常标识为直流电压,交流电压需按1.4倍降额,即500V DC对应AC电压约350V)。建议实际工作电压不超过额定电压的80%(即400V DC),避免长期过压导致电容老化、漏电流增大。
X7R是MLCC常用温度特性,对应:
采用1812封装(英制尺寸,对应公制4.5mm×3.2mm),是贴片MLCC的常用中尺寸封装,适配自动贴装生产线(SMT),焊接效率高。
通常为卷装(Reel),每盘数量3000~5000个,方便SMT设备供料,减少人工干预。
FM43X334K501EGG因高耐压、宽温稳定的特性,主要应用于:
综上,FM43X334K501EGG是一款性能稳定、适配性强的工业级高耐压MLCC,可满足多数中低频电路的滤波、耦合需求,是工业电源、控制电路的常用选型。
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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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