WMSIC Electronic Components

MDD SMBJ10CA

ModelSMBJ10CA
PackageDO-214AA(SMB)
BrandMDD
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
MDD SMBJ10CA
Type
MDD
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MDD
Electronic Component
SMBJ10CA
Electronic Component
1
Package
DO-214AA(SMB)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.09g
Electronic Component
1
Electronic Component
BM0258755334
Operating Temperature
65℃~+150℃
Voltage
17V
Current(Ir)
5uA
Voltage(VBR)
12.3V
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.

SMBJ10CA(MDD)产品概述

SMBJ10CA 是 MDD 推出的双向瞬态电压抑制二极管(TVS),采用 SMB 封装(DO-214AA),专为抑制瞬态过电压、保护敏感电子器件免受浪涌和电气瞬变损害而设计。器件在小体积下提供高能量吸收能力和良好的钳位性能,适合用于电源母线、信号线、通信接口和车载电子等多种场景的浪涌保护。

一、主要电气参数(典型/额定)

  • 型号:SMBJ10CA(MDD)
  • 类型:TVS 二极管(双向)
  • 反向截止电压 Vrwm:10 V(工作电压/稳压点)
  • 击穿电压 Vbr:12.3 V(典型)
  • 钳位电压 Vc:17 V(在峰值脉冲电流下)
  • 峰值脉冲电流 Ipp:35.3 A
  • 峰值脉冲功率 Ppp:600 W(脉冲能量吸收能力,按行业脉冲测试规范测定)
  • 反向泄漏电流 Ir:5 μA(在 Vrwm 条件下)
  • 工作/存储温度范围:-65 ℃ ~ +150 ℃
  • 封装:DO-214AA(SMB)表面贴装

二、器件特性与优势

  • 双向保护:对称的正负方向钳位特性,适用于交流通道或无固定极性的线路,免去极性判断和反向连接风险。
  • 高能量吸收:600 W 峰值脉冲功率与 35.3 A 峰值脉冲电流,使器件能够吸收短时大幅度浪涌(如雷击感应浪涌、开关瞬变等),提高系统抗冲击能力。
  • 低泄漏电流:典型反向电流仅 5 μA,有利于在静态条件下降低功耗和误触发,适合电池供电或低功耗系统。
  • 宽工作温度:-65 ℃ 至 +150 ℃ 的额定温度,适应苛刻的工业与车载环境。
  • SMB 封装:DO-214AA(SMB)封装兼顾散热与安装便利,便于回流焊工艺并适配通用 SMT PCB 布局。

三、典型应用场景

  • 汽车电子:车载 12V/24V 母线保护、传感器与控制模块的瞬态抑制(注:如需满足汽车级认证,请核实厂方 AEC 规范认证信息)。
  • 电源输入保护:适用于开关电源输入、DC-DC 模块、逆变器等的浪涌防护。
  • 通信与数据接口:USB、RS-232/485、以太网等接口的瞬态过压保护(双向特性对差分信号线有利)。
  • 工业控制:PLC、传感器放大器、驱动器和继电器控制线路的浪涌抑制。
  • 消费电子:电视、机顶盒、家电和电池管理系统的输入端防护。

四、使用与布局建议

  • 靠近被保护器件:将 TVS 器件尽量靠近被保护的 IC 或接口放置,以减少回路电感,提高钳位效果。
  • 缩短走线:保护线路的走线应尽量短且宽,减小串联电感与电阻,保证浪涌电流路径低阻抗。
  • 顶层布线优先:若条件允许,把 TVS 放在顶层并直接与接地铜箔或地平面连接,利于散热与回流。
  • 热管理:在高能量冲击场景下注意 PCB 散热与器件间隔,必要时在附近增加散热铜箔或热沉。
  • 外围保护配合:对重复或更大能量的浪涌,可与熔断器、限流电阻或浪涌吸收器(SPD)配合使用,防止 TVS 过载。
  • 焊接工艺:SMB 封装适用于常规回流焊流程,遵循厂方推荐的温度曲线可避免损伤器件。

五、选型与注意事项

  • 确认脉冲波形与能量:Ppp、Ipp 通常基于特定脉冲波形(如 10/1000 μs 或 8/20 μs)测得,实际选型时请参考厂方数据手册以确认测试条件与极限值。
  • 钳位电压匹配:钳位电压 17 V 为在指定 Ipp 下的典型值,需结合被保护电路耐压能力确认不会超限。
  • 连续工作限制:TVS 的 Ppp/Ipp 为脉冲吸收能力,非连续或非长期导通参数;不宜用于替代稳压或限流器件进行持续导通。
  • 认证与可靠性:如应用于汽车或关键工业领域,请向供应商确认器件是否具有相应的可靠性与行业认证(如 AEC-Q101 等)。

总结:SMBJ10CA(MDD)是一款适合对 10 V 级母线与接口进行双向瞬态保护的 SMB 封装 TVS 器件,具有高能量吸收、低泄漏和宽温度覆盖等优点。正确的 PCB 布局与外围保护配合可以显著提升系统的抗旁路浪涌与长期可靠性。若需最终设计与可靠性验证,请参考 MDD 官方数据手册并进行实际电气与热仿真测试。

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