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.
ERJ2RKF3571X 为松下(PANASONIC)系列的贴片厚膜电阻,0402(1.0 mm × 0.5 mm)封装,标称阻值 3.57 kΩ,精度 ±1%,额定功率 100 mW,额定工作电压 50 V,温度系数 (TCR) ±100 ppm/℃,工作温度范围 -55℃ 至 +155℃。该器件以小封装、高密度装配能力和较好的阻值稳定性为特点,适合空间受限且要求中高精度的电子产品设计。
说明:基于功率限制的最大安全工作电压可由 Vmax = sqrt(P·R) 估算。对于 3.57 kΩ 与 0.1 W,Vmax ≈ √(0.1×3570) ≈ 18.9 V。因此在实际设计中,若全功率条件下使用,电压应控制在约 19 V 以下;器件标称的 50 V 是绝对电压限制,但不代表在该电压下不会超过功率耗散。
总结:ERJ2RKF3571X 为一款适合高密度布局的 0402 厚膜贴片电阻,提供 ±1% 精度与宽温范围,适用于一般精密分压、偏置及空间受限的应用场景。设计时需重点关注功率与温漂对实际阻值的影响,并通过合理的 PCB 散热设计与工艺控制来保证长期可靠性。若需最终设计验证,建议参照松下官方数据表并在目标应用环境下进行样机测试。
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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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