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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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Technical data
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RL2220A390K是瑞隆源(RUILON) 推出的2220贴片封装压敏电阻,专为中低压电路的浪涌过电压防护设计,具备稳定电气性能与可靠浪涌耐受能力,适用于消费电子、通信及低功耗工业场景。
该器件属于氧化锌压敏电阻(MOV) ,利用氧化锌晶粒的非线性伏安特性实现防护:正常工作时呈高阻态(微安级漏电流),浪涌过电压时迅速导通钳位,泄放能量保护后级敏感元件(MCU、传感器、电源模块等)。
型号标识含义:
标称39V,实际工作范围33.6V~42V(±10%公差)。选型关键:需高于电路正常电压1.2~1.5倍,避免长期漏电流过大导致老化。
浪涌峰值电流1.2kA(8/20μs波形)下,钳位电压80V。该值直接决定防护效果,可有效保护5V/12V/24V供电的敏感元件。
采用2220贴片封装,优势明显:
结合参数特性,该器件广泛应用于:
瑞隆源(RUILON)是国内过压保护器件专业厂商,产品符合RoHS环保标准,通过多项可靠性测试:
长期使用(1~2年)后,若压敏电压下降超10%,建议更换,避免防护失效。
RL2220A390K凭借小巧封装、稳定中低压防护性能,成为电子设备浪涌防护的优选器件,适合对体积、成本及可靠性有综合要求的场景。
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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.
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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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