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
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标称阻值470mΩ(0.47Ω),精度**±1%**——低阻值设计是电流采样场景的核心优势,±1%精度可满足多数中低端工业控制、消费电子电路的阻值一致性要求,无需额外校准即可实现基本功能(如小电流回路的精准检测)。
额定功率100mW(0.1W)——小功率设计适配低功耗电路(如便携式设备、小型传感器节点),避免大电流下的功率冗余;实际使用需注意功率降额(环境温度超过70℃时需降低功率,155℃时降额至约50mW)。
±200ppm/℃——表示温度每变化1℃,阻值变化约0.02%;在工作温度范围-55℃~+155℃内,极端温度下最大阻值漂移为±4.2%(200ppm/℃×210℃),属于厚膜电阻的常规温漂范围,适合温度波动较大的场景。
-55℃~+155℃——宽温设计覆盖户外、车载等极端环境(如汽车辅助电路、工业传感器户外节点),经高低温循环测试(-55℃至155℃循环100次)后,阻值变化不超过±0.5%。
470mΩ低阻值可作为DC-DC转换器、电池管理系统(BMS)小电流回路的采样电阻:1A电流下采样压降仅0.47V,不影响电源输出稳定性,同时避免采样电阻自身功耗过大。
适配手机、智能手环等便携设备的信号电路限流:100mW功率满足低功耗需求,可防止过流损坏MCU、传感器等敏感元器件。
宽温性能适合PLC输入/输出接口、小型电机启动电路:在工业现场温度波动(-20℃~+85℃)下,阻值漂移小,保障信号传输一致性。
低阻值配合高阻值电阻实现音频音量调节、显示亮度控制:精准分压可优化小信号电路的输出特性,避免信号失真。
RTT03R470FTP作为RALEC旺诠的经典0603封装厚膜电阻,以低阻值、宽温、高一致性为核心优势,适配电源采样、便携设备限流、工业控制等多场景,兼具品牌可靠性与成本竞争力,是中低端电子电路设计的常用选型之一。
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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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