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-01W472JT 为风华(FH)品牌的贴片厚膜电阻,阻值为 4.7kΩ,精度 ±5%,额定功率 50mW,封装为 0201(超小型 SMT)。该器件适合密集布局、小型化电子产品中的信号、分压和偏置网络使用,工作温度范围 -55℃ 至 +125℃,温度系数为 ±200 ppm/℃。
说明:根据电阻功率与阻值的关系,避免仅依据额定工作电压直接计算耗散功率。按照 P = V^2 / R 计算,若要不超过 50mW,理论上器件上的最大连续直流电压约为 sqrt(0.05×4700) ≈ 15.3V。因此在电路设计中应以功率限制或按较低电压工作为准,或进行必要的功率余量设计。
0201 封装体积极小,适合高密度贴片场合。厚膜工艺具有成本低、批量稳定性好的优点,但相对薄膜电阻在噪声、容差和老化性能上存在差异。该系列适合对体积与成本敏感、对精度要求不高(如±5%)的应用。
常规可靠性试验包括温度循环、湿热试验、机械冲击与振动、寿命老化(功耗加速)等。设计时应参考具体应用的应力级别,必要时向供应商索取可靠性报告或样片做验证测试。
总结:RC-01W472JT 以其超小尺寸和成本优势适用于体积受限、功率需求低且对精度要求不高的应用场景。选型时应重点考虑功率与电压匹配、温度漂移及焊接/存储工艺,以保证长期可靠运行。
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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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