The 1SMB48A is a Transient Voltage Suppressor (TVS) diode from Central Semiconductor Corp. This diode is engineered to protect sensitive electronic components from voltage transients that can arise from lightning, inductive load switching, and electrostatic discharge (ESD). As part of the SMB series, it’s known for its compact surface-mount package and its effective surge protection capabilities.

Applications

• Protection of I/O Interfaces
• Overvoltage protection in power supplies
• Surge protection in consumer electronics
• Transient voltage suppression in data lines
• ESD protection in portable devices

Features

• Surface-mount SMB package for easy PCB assembly
• Reverse standoff voltage of 48V
• Peak pulse power of 600W
• Fast response time
• Unidirectional TVS diode
• Excellent clamping capability
• RoHS compliant

Benefits

• Provides robust protection against voltage transients, ensuring the reliable operation of electronic equipment.
• Compact size makes it suitable for use in space-constrained applications.
• Streamlines integration into automated assembly processes, reducing manufacturing costs.
• Adheres to environmental regulations, ensuring compliance with industry standards.
• The unidirectional clamping action protects circuits against positive voltage surges.

Technical Specifications

The 1SMB48A features a reverse standoff voltage (Vrwm) of 48V and a peak pulse power (Pp) of 600W. The clamping voltage (Vc) is dependent upon the surge current. It has a rapid response time, typically in the picosecond range. The normal operating temperature range is typically from -55°C to +150°C. Being a unidirectional diode, it’s designed to suppress transient voltages in a single direction. This diode provides a reliable and efficient means of protecting sensitive circuitry from damaging voltage surges. The combination of its small size and high surge handling capability makes it a versatile choice for many different applications.