T507127074AQ

Overview

The Powerex T507127074AQ is a Silicon Controlled Rectifier (SCR) designed for high-power industrial applications. It features a 1.2 kV repetitive peak reverse voltage and supports an average on-state current of 70 A with a maximum RMS current of 110 A. The device utilizes a TO-94 stud mount package, ensuring robust mechanical stability under thermal stress. Key electrical characteristics include a maximum gate trigger voltage of 3 V and a non-repetitive surge current capacity of 1200 A at 60 Hz. Operating within a temperature range of -40°C to 125°C, it provides reliable performance in demanding environments.

Feature Summary

• Standard recovery type construction suitable for general rectification and inversion duties
• Stud mount terminal configuration for efficient heat dissipation and secure installation
• High surge current capability to withstand transient overloads during startup or fault conditions

Applications

• Industrial motor drives and variable frequency drive inverters
• High-voltage DC power supply rectification circuits
• Static power switching and induction heating systems

Procurement Notes

Verify the specific suffix 'AQ' against the manufacturer's official datasheet to confirm exact testing criteria and marking requirements. Ensure that the ordering documentation explicitly references the full part number to avoid confusion with similar T50 series variants. Confirm RoHS compliance status directly with the supplier if environmental regulations apply to the final assembly. Cross-reference the package dimensions with the mechanical drawing prior to PCB or heatsink design integration.

Selection Notes

Select this component when a 1.2 kV blocking voltage and 110 A RMS current rating are required in a stud-mount form factor. Consider the standard recovery time for applications where fast switching is not critical. Evaluate the thermal resistance of the mounting interface to ensure the junction temperature remains within the specified 125°C limit under continuous load. Compare gate trigger specifications against the available drive circuit capabilities to ensure reliable turn-on.

Part Context

This SCR belongs to the T50 series from Powerex, characterized by its rugged TO-94 metal case and stud mounting style. The series is widely used in medium-to-high power conversion equipment. The T507127074AQ specifically denotes the 1.2 kV voltage class within this lineup, distinguishing it from lower voltage variants like the 800 V or 500 V versions found in the same family.

Replacement Considerations

Direct substitutes must match the 1.2 kV rating, 110 A RMS current, and TO-94 stud package. Verify that any alternative device maintains compatible gate trigger parameters and thermal characteristics. Consult manufacturer cross-reference guides for equivalent parts from other suppliers offering similar T50-style SCRs.