Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
SHIKUES 1SMA4750AG
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- SHIKUES 1SMA4750AG
- Type
- SHIKUES
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- SHIKUES
- Electronic Component
- 1SMA4750AG
- Electronic Component
- 1
- Package
- SMA
- Electronic Component
- Zener Diode
- Electronic Component
- 0.111g
- Electronic Component
- 1
- (Zzt)
- 35Ω
- Electronic Component
- BM0264580612
- Diode
- 1
- Current(Ir)
- 5uA@21V
- Power Dissipation(Pd)
- 1W
- Electronic Component
- 25.3V~28.9V
- Electronic Component
- 55℃~+150℃
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
1SMA4750AG 产品概述
一、概述与主要参数
1SMA4750AG 是 SHIKUES（时科）出品的一款独立式稳压二极管，采用 SMA 封装（DO‑214AC），标称稳压值 27V。主要电气参数如下：稳压范围 25.3V～28.9V，反向漏电流 Ir = 5μA（在 21V 时测得），耗散功率 Pd = 1W，动态阻抗 Zzt = 35Ω，结温工作范围 -55℃～+150℃。该器件适用于需要中等电压参考与过压钳位的场合。
二、特性亮点
- SMA 封装，体积小，适合 SMT 或通孔化装配方案。
- 低漏电流（5μA@21V），在高阻抗测量或基准电路中有利于降低偏差。
- Pd = 1W 使其在无需大散热器的条件下可承担小功率稳压与钳位任务。
- 宽工作温度，适用于工业级环境。
三、应用场景
- 电源过压保护与电压钳位（输入端瞬态限制）。
- 作为稳压参考或基准源（低功耗测量电路、偏置电路）。
- 通信设备、电池管理、仪表与工业控制等需要 25～30V 稳压点的场景。
- 与限流电阻配合构成简单的并联稳压（分流稳压）电路。
四、设计与使用建议
- 由于 Pd=1W，请按功率限值设计稳压电流：在 Vz≈27V 时，最高持续电流 Iz_max ≈ Pd/Vz ≈ 37mA。实际设计应留有余量并考虑环境温度与 PCB 散热。
- 动态阻抗 35Ω 表明在较大电流变化时稳压精度会受影响，若需更稳的参考，请在更高电流或采用更低 Zt 的型号。
- 对于瞬态过压，请配合适当的限流电阻或其它能量吸收元件，避免超过封装的脉冲能量能力。
- SMA 封装在回流焊时遵循制造商的温度曲线，避免长时间高温以保护器件可靠性。
五、可靠性与封装
SMA 封装在 SMT 工艺中常用，机械强度与热循环性能良好。产品结温范围宽，可在苛刻工业环境下长期工作。为保证长期性能，应避免在器件上施加过大的机械应力或超出额定温度/功率运行。
六、采购与替代
品牌：SHIKUES（时科）；型号：1SMA4750AG。采购时请核对完整数据手册以确认测试条件（测试电流、Zzt 的测量点等）。若需替代品，可参考同稳压电压等级和相近功率/阻抗规格的同类稳压二极管，但替换前务必核对稳压特性、功率和封装兼容性。
如需更详细的电气曲线、脉冲能量能力或封装尺寸图，建议索取时科官方数据手册或联系供应商技术支持。
Request for quote
Send RFQ
Use the form for single models, category sourcing, and multi-line BOM requirements.
Product sourcing intelligence
Model, package, availability, and BOM fit reviewed before quotation.
WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.
BOM matching & alternatives
BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.
Sourcing availability signal
Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.
Buyer sourcing scenarios
Examples of how common component sourcing requests are organized.
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.
Related products
Packaged components ready for RFQ.
1 Piece Integrated Circuit for IRS20124S IRS21956S SOP-20 IRS2453DS SOP-14
- Model
- IRS20124S
- Package
