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.
RC-02K4021FT是一款小功率精密厚膜贴片电阻,主打高密度PCB集成与阻值稳定性,核心参数明确适配多数电子电路需求:
该电阻采用0402封装(英制尺寸:0.04英寸×0.02英寸,公制:1.0mm×0.5mm),是当前贴片电阻中尺寸较小的规格之一,核心优势:
±1%的精度满足大多数模拟电路的信号分压、限流需求;±100ppm/℃的温度系数在温度变化时漂移极小——例如环境温度从25℃升至100℃(变化75℃),阻值仅变化±4.02kΩ×75×10^-6≈±0.3015Ω,远低于精度允许范围(±40.2Ω)。
-55℃~+155℃的工作范围覆盖了:
需注意功率-电压的相互限制:若工作电压超过50V,即使功率未达62.5mW,也可能因电场强度过高导致电阻失效;反之,若功率超过62.5mW(如电流过大),则可能因过热烧毁。
RC-02K4021FT因小尺寸、低功耗、精密性,广泛应用于以下领域:
该电阻由风华FH(风华高科) 生产,作为国内电子元器件行业龙头,具备以下优势:
RC-02K4021FT凭借小尺寸、高精度、宽温适应性,成为工业控制、消费电子等领域的高性价比选择,能满足多数精密电路的稳定运行需求。
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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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