The 1SMC18AT3G is a surface mount Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse. It is designed to protect sensitive electronic components from voltage transients induced by lightning, inductive load switching, and electrostatic discharge (ESD). This TVS diode is part of the SMC series, offering a higher power dissipation capability compared to the SMB series, while maintaining a compact surface mount footprint.

Applications

• Protection of I/O Interfaces
• Voltage surge protection in industrial equipment
• Protection against inductive switching transients in motor control circuits
• ESD protection for high-density PCBs
• Power supply protection
• Telecom equipment protection

Features

• Surface mount SMC package
• Glass passivated junction
• Excellent clamping capability
• Low incremental surge resistance
• Typical IR less than 5 μA above 12V
• Fast response time: Typically less than 1.0 ps from 0 Volts to BV min
• High temperature soldering guaranteed: 260°C/10 seconds at terminals
• Plastic material used carries Underwriters Laboratory Flammability Classification 94V-0
• 18V Stand-off Voltage
• 1500W Peak Pulse Power capability at 10/1000μs waveform, repetition rate (duty cycles): 0.01%

Benefits

• Provides robust protection against high-energy voltage transients
• Reduces the risk of component failure and system downtime
• Compact SMC package ideal for space-constrained applications
• High surge capability ensures reliable performance in demanding environments
• Fast response time protects sensitive electronics from fast transient events
• Compliant with industry safety standards

Technical Specifications

The 1SMC18AT3G features a standoff voltage of 18V and a breakdown voltage between 20V and 22.1V. The clamping voltage at a peak pulse current (IPP) of 54.5A is 29.2V. It boasts a peak pulse power of 1500W for a 10/1000 μs waveform. The operating and storage temperature range is -65°C to +150°C.