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.
ERJ2RKF2490X是松下(PANASONIC)推出的0402封装厚膜贴片电阻,针对中小功率、高密度PCB设计场景优化,凭借稳定的电气性能和宽温适应性,广泛应用于消费电子、工业控制等领域。以下从核心参数、技术特性、应用场景等维度展开说明:
ERJ2RKF2490X的关键电气与物理参数如下(符合松下官方标准):
参数项 规格值 说明 电阻类型 厚膜贴片电阻 厚膜工艺兼顾成本与稳定性 阻值 249Ω 常规精密阻值(后两位编码为0,即249×10⁰) 精度 ±1% 满足一般工业级精度需求 额定功率 100mW(@70℃) 0402封装常规功率等级 温度系数(TCR) ±100ppm/℃ 温度变化对阻值的影响 工作温度范围 -55℃ ~ +155℃ 宽温适应性覆盖严苛场景 封装尺寸 0402(英制:0.04×0.02英寸;公制:1005) 超小封装适合高密度布局 环保认证 RoHS、REACH合规 符合全球环保要求0402封装体积仅1.0mm×0.5mm,可显著减少PCB占用面积,适合智能手机、智能穿戴等空间要求极高的产品,支持回流焊、波峰焊等常规贴片工艺,兼容性强。
ERJ2RKF系列作为松下成熟产品线,具备以下核心优势:
综上,ERJ2RKF2490X凭借小封装、宽温适应性、稳定电气性能,成为消费电子、工业控制等领域中小功率精密电阻的优选方案,松下品牌保障进一步提升了可靠性与供应链稳定性。
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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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