BTA26-800BRG

Triacs Overview

The BTA26-800BRG is a standard Triac from STMicroelectronics, rated for 25 A RMS on-state current and 800 V repetitive peak off-state voltage. It utilizes the TOP3 insulated package with a clip-bonded construction to achieve low thermal resistance (Rth(j-c) max 0.9 °C/W). The component supports both 4-quadrant standard commutation and 3-quadrant snubberless operation. Key electrical parameters include a maximum gate trigger current of 50 mA, a maximum holding current of 75 mA, and an insulation rating of 2500 VRMS between the tab and terminals.

Triacs Feature Summary

• Insulated TOP3 package providing 2500 VRMS isolation capability
• Clip bonding technology for high current handling and low thermal resistance
• UL1557 recognized component certification
• Capable of standard 4-quadrant or snubberless 3-quadrant commutation

Triacs Applications

• On/off switching in static relays
• Heating regulation systems
• Induction motor starting circuits
• Phase control operations in light dimmers
• Motor speed controllers

Triacs Procurement Notes

Verify the specific ordering suffix against official documentation to confirm the exact voltage rating, sensitivity class, and packaging format. Confirm that the required insulation properties align with the TOP3 insulated package specifications. Ensure compliance with RoHS directives if environmental standards are mandatory for the assembly process.

Triacs Selection Notes

Select this component when a 25 A RMS current capacity and 800 V blocking voltage are required in an insulated topology. The standard sensitivity (Type B) requires a higher gate drive current compared to Snubberless variants. Evaluate the thermal management requirements based on the junction-to-case thermal resistance and the expected ambient operating conditions.

Triacs Part Context

This part belongs to the BTA26/BTB26 series designed for general-purpose mains power AC switching. The BTA26 variant specifically features an insulated tab, distinguishing it from the non-insulated BTB26. Both share identical electrical characteristics but differ in their isolation capabilities and UL recognition status.

Triacs Replacement Considerations

Direct replacements within the same family include the BTA26-600BRG for lower voltage applications. For Snubberless functionality, consider the BTA26-800BWRG or BTA26-800CWRG. Non-insulated equivalents are available as the BTB26-800BRG.