WMSIC Electronic Components

Brightking SMBJ26A-AT/TR13 SMBJ26A

ModelSMBJ26A-AT/TR13
PackageSMB(DO-214AA)
BrandBrightking
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
Brightking SMBJ26A-AT / TR13
Type
BRIGHTKING
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Brightking
Electronic Component
SMBJ26A-AT/TR13
Electronic Component
1
Package
SMB(DO-214AA)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.214g
Electronic Component
1
Electronic Component
BM0264590360
Voltage
42.1V
Current(Ir)
1uA
Voltage(VBR)
28.9V
Electronic Component
Electronic Component
Electronic Component
3000

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

Brightking SMBJ26A-AT/TR13 TVS管产品概述

一、产品核心定位与应用场景

SMBJ26A-AT/TR13是台湾君耀(Brightking)推出的单向瞬态抑制二极管(TVS),核心功能是为电子电路提供静电放电(ESD)和浪涌过压保护,属于中小功率保护器件范畴。其应用场景覆盖多个领域:

  • 工业控制:24V直流电源输入、RS485/CAN通信接口、PLC模拟量模块;
  • 消费电子:智能家电电源板、LED驱动电路、无线充电模块;
  • 通信设备:基站射频接口、光模块电源端、以太网端口;
  • 汽车电子:车载24V辅助电源、车身控制器低功耗接口(需确认车规场景适配性)。

该器件通过并联方式接入电路,能在纳秒级时间内响应过压,将电压钳位在安全范围,避免敏感元器件(MCU、传感器、射频芯片)被击穿损坏。

二、关键电气参数深度解析

SMBJ26A-AT/TR13的参数针对24V级电路优化,核心指标及实际意义如下:

2.1 电压类参数(核心保护指标)

  • 反向截止电压(Vrwm):26V
    正常工作时的最大反向偏置电压,此时器件截止、漏电流极小。匹配24V直流系统(如工业24V电源、车载24V辅助电源),避免误导通。
  • 击穿电压(Vbr):28.9V
    1mA测试电流下的导通阈值,电路电压超过此值时,器件迅速从截止态转为导通态,启动保护。
  • 钳位电压(Vc):42.1V
    峰值脉冲电流下的最大电压,直接决定被保护电路的安全上限。该值远低于普通MCU(50V+)、传感器的击穿阈值,有效隔离过压冲击。

2.2 电流与功率参数(抗冲击能力)

  • 峰值脉冲电流(Ipp):14.3A
    基于8/20μs浪涌波形(IEC 61000-4-5标准)的峰值电流,可应对雷击感应浪涌、电源开关浪涌。
  • 峰值脉冲功率(Ppp):600W
    脉冲电流与钳位电压的乘积(14.3A×42.1V≈602W),体现单次浪涌的最大耐受功率,满足中小功率电路需求。
  • 反向漏电流(Ir):1μA
    Vrwm下的漏电流极低,正常工作时无额外功率消耗,不影响电路稳定性。

三、封装与物理特性

SMBJ26A-AT/TR13采用SMB封装(DO-214AA),是小功率表面贴装器件的主流封装,特性如下:

  • 尺寸小巧:3.2mm(长)×2.7mm(宽)×1.6mm(高),适配高密度PCB布局(如便携式设备、小型模块);
  • 安装便捷:表面贴装设计,兼容自动贴片机生产,引脚间距合理,焊接可靠性高;
  • 散热与环保:耐高温环氧树脂封装,散热性好,符合RoHS无铅环保要求;
  • 极性标识:封装表面有色环/丝印标识单向极性(色环端为反向端),避免焊接错误。

四、品牌与可靠性保障

台湾君耀(Brightking)是全球知名保护器件厂商,20+年研发制造经验,SMBJ26A-AT/TR13的可靠性优势:

  • 参数一致性:批量生产中Vbr波动控制在±5%以内,满足量产一致性要求;
  • 严格测试:出厂前经浪涌测试、漏电流测试、温度循环测试,符合工业级标准;
  • 应用验证:已在国内众多厂商量产产品中验证,抗静电性能(接触放电±8kV、空气放电±15kV)符合IEC 61000-4-2标准。

五、典型应用设计要点

为充分发挥保护性能,电路设计需注意:

  1. 并联安装:必须并联在被保护电路的电源/信号端(正极-地之间),不可串联;
  2. 靠近保护对象:尽可能靠近敏感元器件(如MCU),减少PCB走线电感(避免电压尖峰);
  3. 走线优化:电源端保护时,TVS引脚走线短而粗,避免串联电阻;
  4. 配合保险丝:电源端口建议串联快速熔断保险丝,防止TVS失效后短路;
  5. 极性确认:单向TVS需注意极性(色环端接高电位),焊接错误会导致保护失效。

六、市场价值与替代参考

SMBJ26A-AT/TR13在同类产品中性价比突出:

  • 成本优势:相比Littelfuse、Vishay等国际品牌,价格更具竞争力,适合国内量产;
  • 性能匹配:参数与国际品牌SMBJ26A一致,可直接替代;
  • 供应稳定:国内分销网络完善,交货周期短,适配中小批量及大批量采购。

该器件凭借高可靠性、紧凑封装及成本优势,成为24V级电路浪涌/ESD保护的优选方案。

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.