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.
这是光颉(Viking)针对高精度、宽温稳定、小封装集成需求推出的薄膜电阻,核心定位为中高端电子系统的“精密基础元件”。区别于普通厚膜电阻,它通过薄膜工艺实现了“小体积+高精准+低漂移”的平衡——既适配高密度PCB的小型化设计,又能在极端温度下保持阻值稳定,是仪器仪表、汽车电子等领域的高性价比选择。
参数是电阻性能的核心参考,以下结合应用场景解读关键指标:
标称阻值4.7Ω,精度±0.1%——在电子电路中,这种精度足以满足精密采样、反馈回路的需求(例如电流传感器的分流电阻)。举个例子:若电路中需要1A电流对应1V电压(R=1V/1A=1Ω),用±0.1%精度的电阻可将电流测量误差控制在0.1%以内,避免因阻值偏差导致的系统误差。
额定功率100mW,最大工作电压75V——需注意功率降额原则:实际使用时需确保功耗不超过100mW(公式:P=U²/R)。例如:
±25ppm/℃——简单理解:温度每变化1℃,阻值变化约±25×10⁻⁶(即0.0025%)。例如:
-55℃~+155℃——覆盖工业级、汽车级的典型工作区间,可适应极端场景(如汽车发动机舱、户外工业设备),无需额外散热设计。
0603(英制代码,对应公制1608,尺寸约1.6mm×0.8mm)——小尺寸适合高密度PCB设计,能有效缩小电路体积,满足便携设备、小型化模块的需求(例如智能穿戴、无人机控制板)。
采用真空溅射金属薄膜(区别于厚膜电阻的印刷工艺):
该电阻的性能参数与场景需求高度契合,核心应用集中在以下领域:
如数字万用表、示波器的电流/电压测量电路——依赖±0.1%精度实现准确读数,宽温范围保证不同环境下的测量一致性(例如实验室从低温环境移至室温时,读数无明显偏差)。
如发动机控制单元(ECU)的传感器反馈电路、车载导航的信号调理模块——-55℃~+155℃宽温适配发动机舱等极端温度,TCR稳定确保信号精度(例如燃油喷射系统的压力传感器,温度变化不影响控制精度)。
如PLC的模拟量输入模块、伺服电机的电流采样电路——长期稳定工作,避免因温度变化导致的控制误差(例如生产线的伺服电机,连续工作8小时后阻值漂移≤0.05%)。
如高端音频设备的信号衰减电路、智能穿戴的传感器接口——小封装满足小型化需求,精度保证信号质量(例如蓝牙耳机的音频解码模块,阻值稳定避免音质失真)。
符合IEC 60068-2-1(低温)、IEC 60068-2-2(高温)、IEC 60068-2-6(振动)等标准,可承受工业环境中的振动与湿度变化(例如户外光伏逆变器的控制板,湿度85%RH下工作无失效)。
端电极设计优化,焊接后剪切强度≥5N,避免虚焊、脱焊问题,适合批量生产(例如汽车电子厂的SMT生产线,良率≥99.5%)。
该产品已通过RoHS、REACH等环保认证,符合全球市场合规要求,是各领域工程师实现精密电路设计的可靠选择。
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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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