High temperature durability, operating at up to 150°C without performance degradation

STMicroelectronics (NYSE: ST) has introduced the industry's first 800V surface-mount silicon-controlled rectifier (SCR, or thyristor), the TM8050H-8, which operates without performance degradation up to 150°C. This device will help miniaturize power modules for applications that require high reliability in harsh environments.

The newly released TM8050H-8 SCR device has a rated current of 80 A and uses a high-voltage D3PAK (TO-268-HV) package. This makes it suitable for mid-power applications in the 1-10 kW range, improving surface-mount efficiency during assembly and reducing system costs by reducing the size of the PCB and heatsink.

It also boasts a low junction-to-case thermal resistance of 0.25°C/W, making it highly efficient at heat dissipation. Furthermore, it maintains a wide pin-to-tab creepage distance of 5.6 mm even under high voltage, ensuring a safety margin. A TO-247 package is also available.

This new product joins ST's silicon-controlled rectifier family, which provides cutting-edge device and package technologies for automotive and industrial power control. The rated current range is 12A to 80A, enabling the design of very compact and reliable automotive and motorcycle voltage regulators, induction motor starters, soft starters, industrial heaters, cooking range controls, solid-state relays (SSRs), uninterruptible power supplies (UPS), and AC line conditioners.

Additionally, the dynamic resistance (RD) is maintained at 5.5 mΩ (TJ = 150°C), the on-state voltage (VTO) is kept low at 0.85 V, and the maximum leakage current is 20 µA (at 800 V, Tj = 25°C), ensuring high energy efficiency under all operating conditions.

The TM8050H-8 is currently in production, with pricing starting at $2.20 in the TO-247 package and $2.50 in the high-voltage D3PAK package.