WMSIC Electronic Components

BORN 1SMB5931B

Model1SMB5931B
PackageSMB(DO-214AA)
BrandBORN
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
BORN 1SMB5931B
Type
BORN
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
BORN
Electronic Component
1SMB5931B
Electronic Component
1
Package
SMB(DO-214AA)
Electronic Component
Zener Diode
Electronic Component
0.181g
Electronic Component
1
(Zzk)
650Ω
(Zzt)
12Ω
Electronic Component
BM0264583401
Diode
1
Current(Ir)
1uA
Power Dissipation(Pd)
3W
Electronic Component
17.1V~18.9V
Electronic Component
55℃~+150℃

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

1SMB5931B 产品概述

一、产品简介

1SMB5931B 是由 BORN(伯恩半导体)推出的一款 SMB 封装贴片稳压管,属于独立式(单颗)稳压二极管。其典型稳压值在 17.1V ~ 18.9V 范围,额定耗散功率为 3W,适用于需要稳压基准或过压保护的中低功率贴片电路。SMB(DO-214AA)封装兼顾了表面贴装工艺的装配便捷性与较好的热扩散性能,适合批量生产与自动化贴装。

二、主要技术参数

  • 品牌:BORN(伯恩半导体)
  • 封装:SMB(DO-214AA,贴片)
  • 配置:1 个独立式二极管
  • 稳压值(范围):17.1V ~ 18.9V
  • 反向电流(Ir):1 μA(典型、小电流下的反向泄漏)
  • 耗散功率(Pd):3 W(环境及散热条件下的最大耗散)
  • 阻抗:Zzt = 12 Ω;Zzk = 650 Ω(分别为测试工况下的动态阻抗与转折/膝点阻抗表征)
  • 工作结温范围:-55 ℃ ~ +150 ℃

三、性能特点

  • 稳压精度良好:标称稳压位于 17.1~18.9V 区间,适合 18V 左右稳压需求的电源参考或保护电路。
  • 低反向泄漏:Ir 仅 1 μA,可降低待机功耗并减少对高阻抗节点的影响。
  • 中等动态阻抗:Zzt = 12 Ω 表明在工作电流范围内稳压能力稳定;Zzk = 650 Ω 描述了在低电流区的转折特性。
  • 宽温度适应性:-55 ℃~+150 ℃ 的结温范围支持工业级应用环境。

四、封装与热管理

SMB(DO-214AA)为表面贴装矩形封装,适合自动化回流焊工艺。尽管封装有一定散热能力,3W 的功耗要求设计时考虑 PCB 热设计:

  • 建议在器件焊盘下方和周围布置适量铜箔并配合热通孔(vias)导入内层或背面散热层。
  • 在高功率、长时间工作条件下,应按照厂商热阻与降额曲线对额定功率进行降额设计,避免长时间在最大 Pd 下运行导致结温过高。

五、典型应用场景

  • 18V 参考电压或稳压电路(电源模块、测试与校准电路)
  • 过压保护与钳位电路(在保护电路中起粗略稳压/吸收作用)
  • 工业控制电源、仪器仪表以及对温度、稳定性要求较高的设备中用于本地稳压或参考

六、选型与使用建议

  • 若需要更严格的稳压精度或更低动态阻抗,可在电路中并联小信号放大或精密参考源;若用于瞬态吸收,应评估能量吸收能力与脉冲重复率。
  • 在布局时优先考虑热散布,增大铜箔面积并使用多孔连接以降低结温。
  • 生产工艺上采用标准回流曲线进行焊接,避免超温或过长高温暴露影响器件可靠性。

七、注意事项与可靠性

  • 请按产品数据手册中给出的测试条件与极限参数使用,避免超过最大结温与耗散功率。
  • 在高温或高湿环境下应关注长期泄漏电流与稳压漂移,必要时做环境老化测试。
  • 器件属于整流/稳压类半导体,搬运与存储应防潮、防静电,严格遵循器件包装要求。

总结:1SMB5931B 为一款面向中低功耗稳压与保护场合的 3W SMB 封装稳压管,具有较低漏电、工业级温度范围和适配 SMT 工艺的优点。合理的热设计与正确的电路选型能有效发挥其稳压与保护能力。若需更详细的电气特性表与典型曲线,请参考 BORN 官方数据手册。

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.