The 1SMC120A is a Transient Voltage Suppressor (TVS) diode manufactured by Central Semiconductor Corp. It is specifically designed to protect sensitive electronic circuits from voltage transients caused by electrostatic discharge (ESD), inductive switching, and lightning strikes. This TVS diode is part of the SMC series, recognized for its higher power handling capability and robust protection against overvoltage events.

Applications

• Overvoltage protection for power lines
• Protection of sensitive equipment in industrial environments
• Surge protection in automotive electronics
• Protection of communication lines
• Use in power supplies to clamp voltage spikes

Features

• Unidirectional TVS diode
• Surface mount SMC package
• Peak pulse power dissipation of 1500W (10/1000μs waveform)
• Low clamping voltage
• Fast response time
• Excellent clamping capability
• Glass passivated junction
• RoHS compliant

Benefits

• Provides superior overvoltage protection, ensuring the longevity and reliability of electronic devices.
• Reduces the risk of costly repairs and downtime due to transient voltage damage.
• SMC package allows for efficient heat dissipation, enabling high surge current handling.
• Quick response time effectively clamps voltage spikes, preventing component failure.
• Environmentally friendly due to RoHS compliance.

Technical Specifications

The 1SMC120A features a standoff voltage of 120V, a breakdown voltage ranging from 133V to 147V, and a clamping voltage around 199V at a peak pulse current. Its peak pulse power dissipation is rated at 1500W for a 10/1000μs waveform. The operating temperature range typically spans from -55°C to +150°C. This unidirectional device is ideal for applications where protection against positive voltage transients is required. The glass-passivated junction ensures enhanced reliability and stability, while the SMC package's design facilitates efficient thermal management. Its low incremental surge resistance ensures effective clamping action, maintaining the voltage across protected components within safe operating limits during surge events.