The 1SMB18CAT3G 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 SMB series, known for its compact size and high surge capability.

Applications

• Protection of I/O interfaces
• Voltage surge protection in consumer electronics
• Protection against inductive switching transients
• ESD protection for sensitive components
• Automotive electronics protection

Features

• Surface mount SMB package
• Glass passivated junction
• Excellent clamping capability
• Low incremental surge resistance
• Typical IR less than 1 μA above 10V
• 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
• 600W Peak Pulse Power capability at 10/1000μs waveform, repetition rate (duty cycles): 0.01%

Benefits

• Provides robust protection against voltage transients
• Minimizes downtime and repair costs associated with transient-related failures
• Compact size allows for easy integration into space-constrained applications
• High surge capability ensures reliable protection even in harsh environments
• Fast response time prevents damage to sensitive components
• Compliant with industry standards for flammability and soldering

Technical Specifications

The 1SMB18CAT3G has a standoff voltage of 18V and a breakdown voltage between 20V and 22.1V. The clamping voltage at a peak pulse current (IPP) of 1A is 29.2V. It features a peak pulse power of 600W for a 10/1000 μs waveform. The operating and storage temperature range is -65°C to +150°C.