TN2540-800G-TR

Scrs Overview

The TN2540-800G-TR is a standard 25 A Silicon Controlled Rectifier (SCR) from the TYN/TN25 series, manufactured by STMicroelectronics. It features an 800 V repetitive peak off-state voltage and utilizes clip assembly technology for superior surge current performance. The device is housed in a TO-220AB insulated package with a maximum junction temperature of 150 °C. Key electrical parameters include an on-state RMS current of 25 A, a gate trigger current of 40 mA, and an insulating voltage rating of 2500 V rms. It is UL1557 certified under file reference E81734.

Scrs Feature Summary

• Utilizes clip assembly technology to provide enhanced surge current capabilities.
• Features an insulated TO-220AB package with internal ceramic pad for 2500 V rms isolation.
• Designed for high-temperature operation with a maximum junction temperature of 150 °C.
• Complies with UL1557 insulation standards.

Scrs Applications

• General purpose AC switching applications
• Static relay control circuits
• Heating regulation systems

Scrs Procurement Notes

Verify the specific suffix G-TR indicates tape-and-reel packaging when sourcing. Confirm the 800V voltage rating matches the system requirements. Ensure the TO-220AB insulated package fits the thermal and mechanical constraints. Check for UL1557 certification if safety isolation is required. Validate the 40 mA gate trigger current against the driver circuit capabilities.

Scrs Selection Notes

Select this component for general-purpose AC load control where robust surge handling is critical. The insulated package simplifies heatsinking without additional electrical isolation components. Consider the 150 °C junction temperature limit for high-ambient environments. The 25 A RMS rating suits moderate power industrial loads. Verify compatibility with the driving logic level for the 40 mA gate current requirement.

Scrs Part Context

This SCR belongs to the TYN/TN25 series of standard silicon controlled rectifiers. The series is characterized by its use of clip assembly technology, which distinguishes it from wire-bonded alternatives by offering better mechanical stability and higher surge current tolerance. The TN2540 variant specifically addresses applications requiring 25 A continuous current and 800 V blocking voltage.

Scrs Replacement Considerations

Equivalent parts include TN2540-800G and TN2540-800G-TR. Cross-reference with other 25 A SCRs in the TO-220AB insulated package family. Verify that substitute devices meet the same 2500 V rms insulation and 150 °C thermal ratings.