STMicroelectronics

SMTPA100

SMTPA100 Description

The SMTPA100 from STMicroelectronics is a high-performance thyristor surge protector designed for robust circuit protection in demanding electronic applications. Part of the SMP, TRISIL™ series, this surface-mount device offers a 100V off-state voltage and an impressive 150A peak pulse current (8/20µs), ensuring reliable transient voltage suppression. With a breakover voltage of 133V and a low 35pF capacitance, it minimizes signal distortion while providing fast response to voltage spikes. Its compact DO-214AA (SMB) package and tape & reel (TR) packaging make it ideal for automated assembly processes.

SMTPA100 Features

• High Surge Current Handling: Supports 150A (8/20µs) and 50A (10/1000µs) peak pulse currents, making it suitable for high-energy transient suppression.
• Low Capacitance (35pF): Ensures minimal impact on high-speed signal integrity, critical for communication and data lines.
• Surface-Mount Design (SMB): Compact footprint for space-constrained PCB layouts.
• Wide Voltage Range: 100V off-state voltage and 133V breakover voltage provide robust protection against overvoltage events.
• Reliable Compliance: ROHS3 Compliant, REACH Unaffected, and MSL 1 (Unlimited) for environmental and handling reliability.

SMTPA100 Applications

The SMTPA100 excels in protecting sensitive electronics from ESD, lightning surges, and inductive load switching transients. Key applications include:

• Telecommunications Equipment: Safeguards data lines and interfaces from voltage spikes.
• Industrial Control Systems: Protects PLCs, sensors, and motor drives from transient disturbances.
• Consumer Electronics: Used in USB ports, HDMI lines, and power supplies to ensure compliance with surge immunity standards.
• Automotive Electronics: Ideal for CAN bus and infotainment systems requiring high-reliability surge protection.

Conclusion of SMTPA100

The SMTPA100 stands out as a high-efficiency, low-capacitance thyristor surge protector with superior transient suppression capabilities. Its compact SMB package, high surge current rating, and compliance with environmental standards make it a preferred choice for engineers designing robust protection circuits. Whether in industrial, telecom, or automotive systems, the SMTPA100 delivers reliable performance under extreme electrical stress, ensuring long-term device protection and system integrity.