SMBJ30A TVS Diode – 30V 400W Unidirectional Transient Voltage Suppressor (SMB / DO-214AA)

The SMBJ30A is a unidirectional Transient Voltage Suppression (TVS) diode designed to protect sensitive electronic circuits from Electrostatic Discharge (ESD), lightning-induced surges, and transient overvoltage events. Featuring a 30V reverse standoff voltage, 400W peak pulse power dissipation, and a compact SMB (DO-214AA) surface-mount package, it provides fast and reliable protection for power supplies, communication interfaces, industrial electronics, automotive systems, and embedded applications.

Key Features -

• Unidirectional TVS diode for transient voltage protection

• Reverse standoff voltage of 30V

• Peak pulse power dissipation of 400W

• Breakdown voltage from 33.3V to 36.8V

• Maximum clamping voltage of 48.4V

• Low reverse leakage current of 1µA (max)

• Fast response for effective ESD and surge suppression

• Compact SMB (DO-214AA) surface-mount package

Specifications -

• Product Type - TVS Diode

• Part Number - SMBJ30A

• Polarity - Unidirectional

• Package - SMB (DO-214AA)

• Mounting Type - Surface Mount (SMD/SMT)

• Number of Pins - 2

• Number of Channels - 1

• Reverse Standoff Voltage (VRWM) - 30V

• Breakdown Voltage (VBR) - 33.3V to 36.8V

• Clamping Voltage (VC Max) - 48.4V

• Peak Pulse Power (PPP) - 400W

• Peak Pulse Current (IPP) - 8.3A

• Reverse Leakage Current (IR Max) - 1µA

• Maximum Operating Temperature - 150°C

• Operating Temperature Range - -55°C to +150°C

Applications -

• DC power input protection

• Switch Mode Power Supplies (SMPS)

• Industrial control systems

• Automotive electronics

• Communication and networking equipment

• Embedded systems and microcontroller boards

• Consumer electronics

• Security and surveillance systems

• Telecom and data communication interfaces