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Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
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VISHAY(威世)作为全球无源电子元器件领域的领军厂商,其MBB系列金属膜电阻以高精度、宽温稳定、中等功率适配为核心设计目标。MBB02070C1504FCT00是该系列中针对1.5MΩ阻值的细分型号,主要面向工业控制、仪器仪表、通信等对阻值精度和温漂要求较高的应用场景,弥补了常规碳膜电阻精度不足、温漂过大的短板,同时兼顾插件封装的焊接可靠性。
型号中“1504”为阻值编码(15×10⁴=1.5MΩ),精度标注为**±1%**,远高于普通碳膜电阻(±5%),可满足信号调理、分压电路等对阻值一致性要求较高的设计需求,减少电路误差累积。
额定功率为600mW(0.6W),属于中等功率金属膜电阻,覆盖大部分常规电路的功率需求(如电源分压、滤波、小信号放大负载等)。需注意:高温环境下需参考VISHAY降额曲线使用,避免超过最大允许功耗。
温度系数为**±50ppm/℃**,表示温度每变化1℃,阻值变化±50×10⁻⁶。例如,当环境温度从-55℃升至+155℃(温差210℃),阻值最大漂移约15.75kΩ,远低于低精度电阻的漂移量,确保宽温环境下电路性能稳定。
支持**-55℃至+155℃**的宽温工作,覆盖工业级(通常-40~125℃)、部分高温工业场景(如锅炉控制、汽车发动机舱周边),适应极端环境下的长期可靠运行。
采用插件式封装,外形尺寸为直径2.5mm×长度6.5mm,引脚间距符合标准PCB焊盘设计,适合手工焊接、波峰焊等传统工艺;体积紧凑,可在空间有限的电路板上高密度布局,同时插件式引脚的机械强度高于贴片电阻,适合对焊接可靠性要求较高的场合。
该型号凭借VISHAY的工艺优势与宽温稳定特性,成为高精度中等功率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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