Power-module miniaturisation with high-temperature rectifiers

With its 80A current rating, the new TM8050H-8 SCR, housed in the High-Voltage D³PAK (TO-268-HV) enables mid-power applications in the 1-10kW 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 5.6mm that gives a large safety margin in the presence of high applied voltages. A TO-247 package option is also available.

This is the ST family’s latest addition of SCRs that all bring device and package technologies to automotive and industrial power control, and the TM8050H-8 spans current ratings from 12-80A, so 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 (R_D) and on-state voltage (V_TO) of 5.5 mΩ (T_J = 150°C) and 0.85V respectively, and leakage current of 20µA max (at 800V, T_j = 25°C), the TM8050H-8 ensures extremely high energy efficiency under all operating conditions.

The TM8050H-8 is in production now, priced from $2.20 in TO-247 or $2.50 in High-Voltage D3PAK.