9 November 2016
Power Electronics / Power Management
STMicroelectronics has introduced the industry’s first 800 V surface mount silicon controlled rectifiers (SCR, or thyristor) 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 new 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, lowering system cost. The package has very 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 TM8050H-8 is the latest addition to ST’s family of SCRs that all bring state-of-the-art device and package technologies to automotive and industrial power control. Spanning current ratings from 12 A to 80 A, the devices enable designers to create extremely compact and reliable car or motorcycle voltage regulators, induction motor starters, soft starters, industrial heater or cooker controls, solid-state relays (SSRs), uninterruptible power supplies (UPS) and AC-line conditioners.
With low dynamic resistance and on-state voltage of 5,5 mΩ (TJ = 150°C) and 0,85V respectively, and leakage current of 20 μA max (at 800 V, TJ = 25°C), the TM8050H-8 ensures extremely high energy efficiency under all operating conditions.
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