TN4050HA-12GY-TR

Scrs Overview

The TN4050HA-12GY-TR is an automotive-grade Silicon Controlled Rectifier (SCR) thyristor manufactured by STMicroelectronics. It features a maximum repetitive peak off-state voltage of 1200 V and a nominal RMS on-state current rating of 40 A. The device supports a maximum surge current of 400 A for a 10 ms sine wave pulse and offers high dynamic performance with an off-state dV/dt of 1500 V/µs and a turn-on dI/dt of 200 A/µs at a junction temperature of 150 °C. It is housed in a D²PAK surface-mount package, qualified to AEC-Q101 standards, and operates within a junction temperature range up to 150 °C.

Scrs Feature Summary

• AEC-Q101 qualified for automotive reliability requirements
• High peak voltage robustness up to 1400 V surge capability
• Superior surge current handling capacity of 400 A
• Designed for compact SMD designs on PCB or insulated metal substrates

Scrs Applications

• Automotive on-board chargers
• Solid state relays
• Stationary battery chargers requiring high off-state immunity

Scrs Procurement Notes

Verify the specific suffix 'TR' indicates tape and reel packaging configuration when sourcing. Confirm that the base part number TN4050HA-12GY corresponds to the exact electrical ratings and package type required for your design. Ensure compatibility with AEC-Q101 automotive qualification standards if used in vehicle systems. Cross-reference official datasheets for thermal management guidelines associated with the D²PAK package.

Scrs Selection Notes

Select this component for applications demanding high voltage blocking capabilities and robust surge handling in a compact surface-mount form factor. The 1200 V rating suits high-voltage AC switching scenarios. Consider the 40 A RMS current limit for load requirements. The automotive qualification makes it suitable for harsh environments where standard industrial components might fail due to voltage transients or thermal stress.

Scrs Part Context

This SCR belongs to STMicroelectronics' portfolio of power semiconductor devices designed for high-efficiency energy conversion. As part of the automotive grade lineup, it addresses the need for reliable power control in electric and hybrid vehicles. The D²PAK package allows for efficient heat dissipation while maintaining a small footprint, supporting the trend toward miniaturization in modern power electronics.

Scrs Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout compatibility and thermal characteristics if considering alternative manufacturers. Ensure any replacement meets the same AEC-Q101 qualification and voltage/current ratings.