STMicroelectronics

SMA6T68AY

SMA6T68AY Description

The SMA6T68AY from STMicroelectronics is a high-performance unidirectional TVS diode designed for robust transient voltage suppression in automotive and industrial applications. Part of the SMA6TY, TRANSIL™ series, it features a 58.1V reverse standoff voltage (Typ) and a 64.6V minimum breakdown voltage, ensuring reliable protection against voltage spikes. With a peak pulse current of 33A (8/20µs) and a clamping voltage of 121V at Ipp, it effectively safeguards sensitive electronics from ESD, lightning surges, and inductive load switching events. Packaged in a surface-mount SMA form factor, it is RoHS3 compliant and meets automotive-grade reliability standards.

SMA6T68AY Features

• High Power Handling: 600W peak pulse power dissipation for superior surge protection.
• Low Clamping Voltage: 121V max at Ipp minimizes stress on downstream components.
• Automotive Qualified: AEC-Q101 compliant, ideal for harsh environments.
• Fast Response Time: Rapid reaction to transient events (nanosecond-level).
• Surface-Mount SMA Package: Compact design for space-constrained PCB layouts.
• REACH Unaffected & MSL1: Suitable for unlimited shelf life and lead-free assembly.

SMA6T68AY Applications

• Automotive Systems: Protects CAN bus, infotainment, and ECU circuits from load dump and ISO 7637-2 transients.
• Industrial Electronics: Shields PLCs, sensors, and power supplies from inductive switching surges.
• Telecom Infrastructure: Guards base stations and networking equipment against lightning-induced surges.
• Consumer Electronics: ESD protection for USB ports, HDMI interfaces, and power management ICs.

Conclusion of SMA6T68AY

The SMA6T68AY stands out for its high power density, low clamping voltage, and automotive-grade robustness, making it a top choice for mission-critical surge protection. Its unidirectional design optimizes performance in DC systems, while the SMA package ensures easy integration. Engineers can rely on this TVS diode for enhanced reliability in applications exposed to severe electrical transients, aligning with industry standards for safety and performance.