STMicroelectronics TM8050H-8 surface-mount silicon controlled rectifier

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STMicroelectronics’ 800 V surface-mount silicon controlled rectifiers (thyristors) are specified for operation at temperatures up to 150°C without derating, giving freedom to miniaturise power modules for applications that demand high reliability in harsh conditions.

With its 80 A current rating, the TM8050H-8 SCR, housed in the high-voltage D3PAK (TO-268-HV), enables mid-power applications in the 1–10 kW range to leverage surface-mount assembly efficiencies and reduce PCB and heatsink sizes. The package has low junction-to-case thermal resistance of 0.25°C/W, ensuring efficient heat dissipation, and a large pin-to-tab creepage distance of 5.6 mm that gives a large safety margin in the presence of high applied voltages. A TO-247 package option is also available.

The product is the latest addition to ST’s family of SCRs for automotive and industrial power control. Spanning current ratings from 12 to 80 A, the devices enable designers to create compact car or motorcycle voltage regulators, induction motor starters, soft starters, industrial heater or cooker controls, solid-state relays, uninterruptible power supplies and AC-line conditioners.

With low dynamic resistance (RD) and on-state voltage (VTO) of 5.5 mΩ (T_j = 150°C) and 0.85 V respectively, and leakage current of 20 µA max (at 800 V, T_j = 25°C), the TM8050H-8 ensures high energy efficiency under all operating conditions.

For more information: www.st.com/tm8050h-d3pak-nb.