TPDV1240RG

Overview

The TPDV1240RG is a 40 A high-voltage triac from STMicroelectronics, utilizing high-performance alternistor technology. It features a maximum blocking voltage of 1200 V and an on-state current rating of 40 A. The device supports a gate trigger current of 200 mA and offers commutation capability up to 142 A/ms at 10 V/µs. It provides noise immunity of 500 V/µs and includes an insulated package rated at 2500 V rms. The component is designed for power control applications involving inductive loads.

Feature Summary

• High performance alternistor technology for robust operation
• Very high commutation levels suitable for demanding switching environments
• Insulated package providing enhanced safety isolation

Applications

• Power control for inductive loads such as motors and transformers
• Heating systems on three-phase power grids
• Motor starters
• Induction motor speed control, particularly for fans

Procurement Notes

Verify the specific ordering suffix and packaging configuration against the manufacturer's official datasheet before procurement. Ensure that the requested variant matches the required insulation class and thermal characteristics for the intended application environment. Cross-reference part numbers with authorized distributors to confirm authenticity and traceability.

Selection Notes

Select this component for applications requiring high surge current capability and superior commutation performance. The 1200 V blocking voltage makes it suitable for higher voltage three-phase grid connections. Consider the 40 A RMS current rating when sizing for continuous load requirements. The insulated package is critical for applications necessitating galvanic isolation between control and power circuits.

Part Context

The TPDV1240RG belongs to the TPDVxx40 series of triacs manufactured by STMicroelectronics. This family is characterized by its use of alternistor technology, which distinguishes it from standard triac structures. The series is specifically engineered to handle the stresses associated with inductive load switching in industrial power control scenarios.

Replacement Considerations

Direct replacements must match the 40 A current rating, 1200 V blocking voltage, and screw-mount or through-hole package style. Verify that alternative components offer comparable commutation rates at 10 V/µs and similar noise immunity levels to ensure circuit stability in high-dv/dt environments.