WMSIC Electronic Components

Brightking SMBJ8.0A/TR13 SMBJ8.0A

ModelSMBJ8.0A/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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Brightking SMBJ8.0A / TR13
Type
BRIGHTKING
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Brightking
Electronic Component
SMBJ8.0A/TR13
Electronic Component
1
Package
SMB(DO-214AA)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.198g
Electronic Component
1
Electronic Component
BM0264820911
Voltage
13.6V
Current(Ir)
50uA
Voltage(VBR)
8.89V
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.

SMBJ8.0A/TR13 产品概述

一、产品概况

SMBJ8.0A/TR13 是 Brightking(台湾君耀)推出的一款单向瞬态抑制二极管(TVS),采用 SMB(DO-214AA)表面贴装封装,专为保护 I/O 接口与 AC/DC 电源线免受瞬态电压冲击而设计。该器件具有低外形、高能量吸收能力和快速响应特性,适合空间受限的电路板布局与高密度组装需求。

二、主要参数

  • 类型:TVS,单向(单向极性)
  • 反向持续电压 Vrwm:8V
  • 击穿电压 VBR(Ibr 测试点):8.89V
  • 钳位电压 Vc:13.6V(对应峰值脉冲电流)
  • 峰值脉冲电流 Ipp:44.2A
  • 峰值脉冲功率 Ppp:600W
  • 反向漏电流 Ir:50 μA(在 Vrwm 条件下典型)
  • 封装:SMB(DO-214AA),表面贴装
  • 芯片工艺:玻璃钝化结

以上参数在典型测试条件下测得,实际应用中请参照详细规格书以确认测试波形与条件(例如脉冲波形及宽度)。

三、产品特性与优势

  1. 小巧低矮封装:SMB 低外形设计,有利于节省电路板空间,适配紧凑型电子设备与高密度布局。
  2. 高能量吸收能力:600W 峰值脉冲功率与 44.2A 峰值脉冲电流,能够有效吸收瞬态浪涌能量,减少后端电路受损风险。
  3. 出色的钳位能力:13.6V 的钳位电压能在过压事件中将钳位电压控制在安全范围内,保护敏感器件。
  4. 快速响应与低寄生电感:低电感封装与焊接结构确保器件对高频瞬态的快速捕捉与抑制,适合高速数据线与 I/O 接口保护。
  5. 可靠的结晶工艺:玻璃钝化结工艺提升结面稳定性与长期可靠性,降低热应力与电气性能漂移。
  6. 内置应力消除功能:增强对焊接与热循环的耐受性,提高产品一致性与可靠性。

四、典型应用场景

  • I/O 接口保护:如 USB、Ethernet、RS-232/485、HDMI 等接口的浪涌与静电放电防护。
  • AC/DC 电源输入保护:为电源变换器、适配器和电源滤波电路提供过压瞬态抑制。
  • 通信设备、工控设备与消费电子:在电磁干扰或雷击感应时为系统提供局部保护。
  • 其他需要抑制瞬态高压脉冲的场合。

五、封装与安装建议

  • 封装为 SMB(DO-214AA)表面贴装形式,建议采用常规回流焊工艺进行贴装。
  • 在电路板布局上,TVS 元件应尽量靠近被保护的输入/输出端,缩短连接路径以降低寄生电感与提升保护效果。
  • 注意极性标识:单向 TVS 在器件阴极有极性标记(条形或阴极标志),接线时确保正确方向以实现反向钳位保护。
  • 为提高热散能力,建议在焊盘下采用适量铜箔并设计足够的焊盘与散热路径。

六、使用注意事项

  • 持续工作电压不得超过 Vrwm(8V),否则会引起较大漏电或器件失效。
  • 钳位电压为脉冲条件下的测得值,长期承受高能量脉冲会影响器件寿命,应根据实际冲击能量选择合适的 TVS 等级或增加串联限流元件。
  • 反复承受高幅值冲击时需考虑热耗散与累积损伤,必要时进行热仿真与寿命评估。
  • 储存与焊接时遵循标准 SMT 元件的防潮与回流焊温度规范,避免过热或潮湿导致封装损伤。

七、选型与替代建议

SMBJ8.0A/TR13 适用于需要在约 8V 工作点保护的单向线路。若系统工作电压略高或需更低钳位电压,可考虑相邻电压等级的 SMBJ 系列;若需要更强的能量吸收能力或更低的漏电,则可选用更大封装或功率等级的 TVS。同一品牌或同类器件在替换时请确保 Vrwm、VBR、Vc 与 Ipp 等关键参数匹配,以免影响保护效果。

如需详细的电气特性曲线、封装尺寸与回流焊推荐曲线,请参考 Brightking 官方规格书或联系供应商获取完整数据手册。

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