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.
CRCW04021K30FKED 是 VISHAY(威世)出品的一款 0402 封装厚膜贴片电阻,标称阻值 1.3 kΩ,精度 ±1%,温度系数(TCR)±100 ppm/℃,额定功率 62.5 mW(通常指 +70℃ 状态下),最大工作电压 50 V,工作温度范围为 −55℃ 到 +155℃。0402 封装尺寸约 1.0 mm × 0.5 mm,适合高密度 SMT 布局与轻薄化设计需求。
厚膜工艺使该系列电阻具有良好的通用性和成本效益,±1% 精度配合 ±100 ppm/℃ 的温漂,能在多数工业与消费类电子的信号处理、分压与偏置电路中保持足够的稳定性。工作温度范围宽(−55℃~+155℃),适应工业级环境。需要注意的是,0402 的体积与热容量较小,长时间在高功耗或高环境温度下工作时应按照制造商的功率降额曲线进行设计,以避免可靠性下降。
在选型时除查看阻值与精度外,应重点关注温度系数、额定功率及实际工作环境温度,以保证长期稳定性。若对温漂、长期漂移或噪声有更苛刻要求,可考虑薄膜或金属膜精密电阻;如需汽车级或特殊认证,请向厂商确认是否满足 AEC 或其他规范。采购时建议索取最新 Datasheet 与样片进行实装验证,确保回流、清洗工艺与 PCB 布局满足实际可靠性需求。
总结:CRCW04021K30FKED 以其小型化、±1% 精度和适中的温漂特性,适合大多数对体积与成本敏感的通用电子设计;在高温、高功耗或精密测量场合,需进行降额或选用更高等级产品。若需完整电气与热特性曲线,请参考 VISHAY 官方 Datasheet。
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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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