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.
H7550-1 是上海矽朋(Siproin)推出的一款固定输出线性稳压器(LDO),为单通道正极输出设计,标准输出电压为 5V。器件工作于 -40℃ 至 +85℃ 环境温度范围,面向低功耗、对噪声与输出纹波有严格要求的便携与工业应用场景。该器件具有极低静态电流与较小的压差特性,适合电池供电或长期待机的系统。
H7550-1 提供 TO-92-3 直插封装,适合手工焊接与小批量装配。TO-92 型封装便于装入通孔 PCB,并可通过简单的散热措施(如加大焊盘、贴敷散热片)改善热性能。具体引脚排列与标识请以原厂数据手册或器件外观标记为准,使用前务必核对实际封装与引脚定义。
由于为线性稳压器,功耗等于 (Vin − Vout) × Iout。在高输入电压或高负载情况下,器件自身功耗会显著上升,导致结温升高。例如:若 Vin=15V、Vout=5V、Iout=150mA,则器件功耗为约 1.5W,这对 TO-92 小封装而言可能超出无额外散热条件下的安全范围。建议:
总结:H7550-1 以其超低静态电流、固定 5V 输出与小体积 TO-92 封装,适合低功耗与空间受限的应用。但在高输入差和高负载情形下需重视热管理与功耗限制,按原厂资料与工程经验做好电路与散热设计。若需更详细的电气参数或数据手册,我可以协助查找或解析具体规格表。
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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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