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.
0603WAF2700T5E 为 UNI-ROYAL(厚声)系列厚膜贴片电阻,阻值 270Ω,阻值精度 ±1%,额定功率 100mW,工作温度范围 -55℃~+155℃。封装为 0603(约 1.6mm × 0.8mm),适用于高密度表面贴装电路。温度系数(TCR)为 ±100ppm/℃,工频或直流工作电压标称可达 75V。
0603 小体积限制了散热能力,长期或近额定功率运行将加速漂移和失效。建议在设计时留有功率裕量(常见做法是 50% 以上余量),并避免在最高环境温度下满载运行。布线应最大化散热通道,焊盘焊膏量与铺铜面积会显著影响热阻。
适用于信号处理、滤波网络、电流分流、基准与偏置电路、便携设备与消费电子中要求中等精度的分压/限流应用。因尺寸小、成本低,常用于大批量生产的贴片化设计。
该型号适配自动贴装与回流焊工艺。推荐使用标准卷带供料,贴装后应采用推荐回流曲线及严格控制峰值温度与时间,避免过热导致电阻性能退化。存储与操作应注意防潮、防尘及静电防护。
厚膜电阻具有良好的性价比与可焊性,但在长期稳定性与低温漂要求较高的场合不如金属膜系列。选型时综合考虑温度系数、功率裕量与环境温度,如需更高稳定性或更低 TCR,可考虑更高等级或其它材料系列。欲获取完整电气表格与热降额曲线,请参照厂商数据手册或联系 UNI-ROYAL 技术支持。
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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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