WMSIC Electronic Components

ON 1SMB5946BT3G

ON 1SMB5946BT3G
1 / 3

Product image

Model1SMB5946BT3G
PackageSMB
BrandON
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration Date code within 2 years

Available for RFQ

Send RFQ Contact customer service

Technical data

Product details

20 specifications

Core information

Product name
ON 1SMB5946BT3G
Type
ON
Unit
Electronic Component
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
ON
Electronic Component
1SMB5946BT3G
Electronic Component
1
Package
SMB
Electronic Component
Zener Diode
Electronic Component
0.213g
Electronic Component
1
(Zzk)
2kΩ
(Zzt)
140Ω
Electronic Component
BM69419027
Diode
1
Current(Ir)
1uA@56V
Power Dissipation(Pd)
550mW
Electronic Component
71.25V~78.75V

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

产品概述：1SMB5946BT3G

一、产品背景

在现代电子设计中，稳压二极管是保护电路不受过电压影响的关键元件。随着电子产品日益增多和技术不断进步，对稳压二极管的性能、可靠性和适应性提出了更高的要求。1SMB5946BT3G 由安森美半导体（ON Semiconductor）制造，是一款高效的表面贴装型稳压二极管，旨在提供高稳定性和高可靠性的电压稳压功能，适用于各种电子设备和系统。

二、产品主要特性

  1. 稳压特性：1SMB5946BT3G 的标称齐纳电压为75V，具有良好的电压稳定性，容差为±5%。在工作条件下，用户可以依靠其维持电压的稳定，确保电路在各种操作环境中安全可靠地工作。

  2. 反向泄漏电流：在56V的反向电压下，该二极管的反向泄漏电流仅为1µA，说明其出色的漏电控制能力。这一特性在需要低功耗和高效能的电路设计中尤为重要，能够有效降低功耗，提升设备的总能效比。

  3. 正向电压特性：在200mA的正向电流下，该元件的正向电压为1.5V，表明其具有优良的导电性能，确保在正常操作时低的压降，有助于电路的正常运行和效率提升。

  4. 阻抗和功率特点：该稳压二极管具有最大阻抗140 Ohms和最大功率功率3W，能够支持各类中小功率应用。无论是在瞬态电压抑制、电视信号处理，还是在电源管理的应用中，都能表现出优异性能。

  5. 工作温度范围：1SMB5946BT3G 的工作温度范围为-65°C至150°C，使其适用于极端环境中，广泛应用于汽车电子、航空航天、工业设备及家用电器等领域，展现出极强的环境适应性。

  6. 安装类型与封装：采用SMB（DO-214AA）封装，支持表面贴装技术（SMD），方便焊接并大大减少了焊接和组装的工序。紧凑的外观设计不仅有助于节省PCB空间，而且提高了组件的散热性能。

三、应用领域

  1. 电源管理：广泛应用于各种电源管理系统中，例如开关电源、线性稳压电源等，为整个系统提供稳定的电压输出。

  2. 电路保护：可用于电路保护应用，如过电压保护、浪涌保护等，避免电压瞬变对敏感电子元件的损害。

  3. 汽车电子：适合用于汽车电子系统中，提供抗干扰能力，确保电子控制单元（ECU）正常工作。

  4. 通讯设备：在通信设备中用于保护设备免受过压影响，以提高通讯的可靠性与稳定性。

  5. 工业自动化：可在工业控制器、传感器等设备中的电源和信号线保护中发挥重要作用，确保监测和控制的稳定性。

四、总结

1SMB5946BT3G 是一款性能优良的稳压二极管，凭借其高压值、低漏电、高功率、宽工作温度范围等优点，广泛适用于现代电子产品。无论是在电源管理、信号处理，还是在环境要求严格的应用场合，其可靠性和稳定性都能很好地满足市场需求。这使得1SMB5946BT3G 成为设计师在选择稳压二极管时的理想选择。

Request for quote

Send RFQ

Use the form for single models, category sourcing, and multi-line BOM requirements.

Send your target model and quantity.

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.

Electronic component model and package intelligence review on an ESD-safe inspection bench

Model & package intelligence

Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.

BOM matching and alternative component comparison workstation with protected IC samples

BOM matching & alternatives

BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.

Electronic component sourcing availability dashboard with ESD-protected samples

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.

Package confirmation Typical RFQ workflow

A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.

Mixed BOM triage Typical RFQ workflow

The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.

Obsolete-part review Typical RFQ workflow

Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.

Small-batch request Typical RFQ workflow

Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.

Repair batch evidence Typical RFQ workflow

When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.

Model suffix clarification Typical RFQ workflow

Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.

Export handoff Typical RFQ workflow

The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.

Replenishment inquiry Typical RFQ workflow

Related products

Packaged components ready for RFQ.