The SMBJ12A-E3/61 is a surface-mount Transient Voltage Suppressor (TVS) diode manufactured by Vishay. It's designed to protect sensitive electronic components from voltage transients induced by lightning, electrostatic discharge (ESD), and inductive switching. This TVS diode is a unidirectional device, meaning it provides protection only for positive voltage transients relative to its cathode.

Applications:

• I/O Interfaces
• AC/DC Power Supplies
• Data lines
• Microcontroller protection
• Automotive electronics
• Industrial control systems

Features:

• Unidirectional TVS diode
• Surface mount SMB package
• Low profile
• Glass passivated junction
• Excellent clamping capability
• High surge capability
• Meets MSL level 1, per J-STD-020, LF maximum peak of 260 °C
• AEC-Q101 qualified available

Benefits:

• Provides robust protection against transient voltage events, increasing system reliability.
• Fast response time ensures rapid clamping of overvoltage conditions, preventing damage to downstream components.
• Small SMB package allows for dense board layouts.
• High surge current capability provides protection against high-energy transients.
• Compliant with industry standards such as MSL level 1 and AEC-Q101 (for qualified versions).

Additional Details:

The SMBJ12A-E3/61 has a reverse standoff voltage of 12V and a breakdown voltage between 13.3V and 14.7V. It has a peak pulse power dissipation of 600W (10/1000μs waveform). The operating junction temperature range is -65°C to +150°C. The typical clamping voltage at peak pulse current is 21.5V. The package is SMB (DO-214AA). It is RoHS compliant. The 'E3' suffix indicates an automotive-qualified version. This is a unidirectional device, therefore it must be installed with the correct polarity.