STMicroelectronics

STTH806G

STTH806G Description

The STTH806G from STMicroelectronics is a 600V, 8A general-purpose fast recovery diode housed in a D2PAK (TO-263) surface-mount package. Designed for high-efficiency power conversion, it features a fast recovery time of 55 ns and low forward voltage drop (1.85V @ 8A), making it suitable for high-frequency switching applications. With a reverse leakage current of just 8 µA @ 600V, it ensures minimal power loss. The diode operates reliably up to 175°C junction temperature and complies with ROHS3 and REACH environmental standards. Although marked as obsolete, it remains a robust choice for legacy designs requiring high-voltage rectification.

STTH806G Features

• Fast Recovery Performance: Ultra-low 55 ns reverse recovery time (trr), reducing switching losses in high-frequency circuits.
• High Voltage & Current Rating: 600V reverse voltage (Vr) and 8A average rectified current (Io) for demanding applications.
• Low Power Dissipation: 1.85V max forward voltage (Vf) at 8A minimizes conduction losses.
• Robust Thermal Performance: 175°C max junction temperature ensures reliability in harsh environments.
• Surface-Mount Design: D2PAK package offers efficient thermal management and PCB space savings.
• Compliance: ROHS3, REACH, and ECCN EAR99 certified for global use.

STTH806G Applications

• Power Supplies: AC-DC converters, SMPS, and PFC circuits benefiting from fast switching.
• Industrial Systems: Motor drives, inverters, and welding equipment requiring high-voltage rectification.
• Renewable Energy: Solar inverters and wind power systems leveraging low-loss diode performance.
• Automotive Electronics: Auxiliary power modules (obsolete status may limit new designs).
• Consumer Electronics: High-efficiency adapters and UPS systems.

Conclusion of STTH806G

The STTH806G excels in high-voltage, high-current applications where fast recovery and low losses are critical. Its D2PAK package and thermal resilience make it ideal for compact, high-power designs. While obsolete, it remains a proven solution for legacy systems or replacements. Engineers should evaluate newer alternatives for forward-looking projects but can rely on this diode for its balanced performance in rectification and switching roles.