STMicroelectronics

SMP50-68

SMP50-68 Description

The SMP50-68 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 68V off-state voltage and a 90V breakover voltage, ensuring reliable clamping during transient voltage events. With a peak pulse current (10/1000µs) of 50A and an 8/20µs surge capability of 150A, it provides superior protection against high-energy transients. Its low 40pF capacitance minimizes signal distortion, making it ideal for high-speed data lines. Compliant with ROHS3 and REACH standards, the SMP50-68 is packaged in a DO-214AC (SMA) tape & reel for automated assembly.

SMP50-68 Features

• High Surge Handling: Supports 150A (8/20µs) and 50A (10/1000µs) peak pulse currents for robust transient suppression.
• Low Capacitance: 40pF ensures minimal impact on high-frequency signal integrity.
• Surface-Mount Design: DO-214AC (SMA) package enables compact PCB integration.
• Reliable Clamping: 68V off-state voltage and 90V breakover voltage for precise overvoltage protection.
• Industry Compliance: ROHS3, REACH, and EAR99 certified, with MSL1 (unlimited) moisture sensitivity.
• Wide Operating Range: Suitable for telecom, industrial, and automotive environments.

SMP50-68 Applications

The SMP50-68 excels in protecting sensitive electronics from ESD, lightning surges, and inductive load switching transients. Key applications include:

• Telecommunications: Safeguarding DSL, PoE, and RF interfaces from voltage spikes.
• Industrial Systems: Protecting PLC I/O ports, sensors, and control modules.
• Automotive Electronics: Shielding CAN bus, infotainment, and power distribution systems.
• Consumer Electronics: Securing USB ports, HDMI lines, and power supplies.

Conclusion of SMP50-68

The SMP50-68 stands out as a high-reliability thyristor surge protector with exceptional transient suppression, low capacitance, and compact form factor. Its wide operating range and compliance with industry standards make it a preferred choice for mission-critical applications requiring robust overvoltage protection. Whether in telecom infrastructure, automotive systems, or industrial controls, the SMP50-68 delivers superior performance and durability, ensuring long-term circuit integrity.