WMSIC Electronic Components

Brightking SMBJ12A/TR13 SMBJ12A

ModelSMBJ12A/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 SMBJ12A / TR13
Type
BRIGHTKING
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Brightking
Electronic Component
SMBJ12A/TR13
Electronic Component
1
Package
SMB(DO-214AA)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.218g
Electronic Component
1
Electronic Component
BM0257561990
Operating Temperature
65℃~+150℃
Voltage
19.9V
Current(Ir)
1uA
Voltage(VBR)
14.7V
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.

SMBJ12A/TR13 — Brightking (台湾君耀) 单向 TVS 压敏二极管 产品概述

SMBJ12A/TR13 是 Brightking(台湾君耀)推出的一款单向瞬态电压抑制器(TVS),采用 SMB(DO-214AA)封装,专为工业、通信和消费电子等场景中的浪涌及雷击瞬态保护设计。该器件在承受大能量脉冲(10/1000µs 波形)时表现出高钳位能力与低漏电特性,适合保护 12V 等级电源总线、接口与半导体器件。

一、核心参数一览

  • 极性:单向(单极性,适用于直流电源极性有固定方向的保护)
  • 反向截止电压 Vrwm:12 V(最大连续工作电压)
  • 击穿电压 Vbr:14.7 V(典型或最小击穿起始值)
  • 钳位电压 Vcl:19.9 V(Ipp 条件下的钳位电压)
  • 峰值脉冲电流 Ipp:30.2 A @ 10/1000 µs
  • 峰值脉冲功率 Ppp:600 W @ 10/1000 µs
  • 反向漏电流 Ir:1 µA(典型或最大漏电)
  • 工作温度:-65 ℃ ~ +150 ℃
  • 封装:SMB (DO-214AA)
  • 类型:TVS(瞬态电压抑制器)

二、主要特性与优势

  • 大能量吸收能力:600 W(10/1000µs)和 30.2 A 峰值脉冲电流,能有效吸收来自雷击或开关瞬态的大能量冲击,保护后端电路与器件免受过压损伤。
  • 低钳位电压:在规定脉冲条件下钳位电压 19.9 V,能够在限制过电压幅度的同时减少对被保护电路的应力。
  • 低漏电流:1 µA 的反向漏电保证在正常工作条件下对电路静态功耗影响极小,适合对功耗敏感的系统。
  • 宽温度工作范围:-65 ℃ 至 +150 ℃,适应严苛环境和高温工作场景,可靠性高。
  • SMB 封装:体积适中,适合自动贴装与回流焊,便于批量生产与替换。

三、典型应用场景

  • 汽车电子(对 12V 车载总线的瞬态浪涌保护)
  • 工业控制设备(开关电源、马达驱动端口的抑制)
  • 通信设备与基站电源线路
  • 消费电子(电源输入、稳压器前端、接口保护)
  • 电池管理与充电器保护(对输入端和监控线路的保护)

四、封装与安装建议

  • 封装为 SMB(DO-214AA),适用于标准 SMB PCB 焊盘布局。实际 PCB 尺寸请参考厂家封装图纸与推荐焊盘尺寸,以保证焊接可靠性与热散逸性能。
  • 推荐采用 SMT 回流焊工艺安装,避免手工焊接过热导致器件性能下降。
  • 当需承受多次大能量冲击时,应注意器件的热累积和可能的降额,必要时在布局中加入限流器件(保险丝、金属氧化膜电阻)以分担能量。
  • 单向器件接法:阴极(标记端)接高电位(电源正极或需保护的正端),阳极接地;在正常极性下器件呈高阻态,在正向瞬态时导通并钳位电压。

五、选型与设计注意事项

  • Vrwm 选择:确保连续工作电压低于 Vrwm(12 V),通常选择比实际总线电压有一定裕量(例如用于 12V 系统时,需确认系统稳态电压和浪涌幅度)。
  • 能量匹配:Ppp 和 Ipp 适用于 10/1000µs 波形的雷击/浪涌场景;若存在更短脉冲(如 8/20µs)或更频繁脉冲,需核对器件在对应条件下的承受能力与温升。
  • 多次冲击:器件在多次大能量冲击下可能降额或损伤,关键保护场合建议配合熔断器或限流电路使用,以提高整机可维护性。
  • 静电与瞬态等级:若用于高频接口或数据线保护,需关注器件的结电容(未给出数值时请向厂商索取),以避免对信号完整性产生不利影响。
  • 可靠性要求高的应用(如汽车三级认证)需索取并验证相关可靠性试验报告与认证资料。

六、包装与订购信息

  • 器件标识:SMBJ12A/TR13(TR 通常指卷盘包装用于 SMT 自动贴装)
  • 订购时请确认包装形式(卷盘尺寸、每盘数量)、合规性(ROHS/REACH 等)与可追溯的批次信息。

总结:SMBJ12A/TR13 提供了稳定的单向瞬态抑制能力,适合 12V 等级的电源与接口保护场景。设计时应结合系统实际电压、脉冲类型与能量分布,合理配置板级防护元件与热管理措施,以获得最佳保护效果与长期可靠性。若需更详细的电气特性曲线、进一步的热阻参数或封装图纸,建议向 Brightking 正式数据手册或授权分销商索取完整技术资料。

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