onsemi

SMS24T1

SMS24T1 Description

The SMS24T1 from onsemi is a surface-mount TVS (Transient Voltage Suppression) diode designed for general-purpose protection against transient voltage spikes. This obsolete but robust component features a 24V reverse standoff voltage (Typ) and a breakdown voltage (Min) of 26.7V, ensuring reliable clamping performance. With a peak pulse power rating of 350W (8/20µs) and a clamping voltage of 44V (Max) at Ipp, it effectively safeguards sensitive circuits from ESD, lightning-induced surges, and other transient events. Its low capacitance of 40pF @ 1MHz minimizes signal distortion, making it suitable for high-speed data lines. Packaged in SC-74 (SOT-457) and supplied in Tape & Reel (TR), it is optimized for automated assembly.

SMS24T1 Features

• High Surge Handling: 8A peak pulse current (8/20µs) and 350W peak pulse power for robust transient suppression.
• Low Clamping Voltage: 44V (Max) @ Ipp ensures minimal stress on protected components.
• Low Capacitance: 40pF @ 1MHz preserves signal integrity in high-frequency applications.
• Unidirectional Protection: 4-channel design for simplified board-level protection.
• Compliance: REACH Unaffected, EAR99, and HTSUS 8541.10.0080 for global compatibility.
• Automation-Friendly: MSL 1 (Unlimited) moisture sensitivity and surface-mount (SOT-457) package.

SMS24T1 Applications

• Consumer Electronics: Protects USB ports, HDMI interfaces, and audio/video inputs from ESD.
• Industrial Systems: Guards PLCs, sensors, and communication modules against voltage transients.
• Automotive Electronics: Shields CAN bus, infotainment systems, and telematics from load-dump surges.
• Telecom Infrastructure: Secures base station RF front-ends and data lines from lightning-induced spikes.
• Power Management: Used in DC-DC converters and battery-powered devices for overvoltage protection.

Conclusion of SMS24T1

The SMS24T1 excels in transient suppression with its high power handling, low clamping voltage, and minimal capacitance, making it ideal for high-speed and precision circuits. While marked obsolete, its proven reliability in ESD and surge protection ensures continued relevance in legacy designs. Engineers seeking a cost-effective, space-saving TVS diode for general-purpose applications will find this component a dependable choice. For new designs, consider onsemi's latest alternatives within the SMS24 series for enhanced performance.