BTA25-600BW

Triacs Overview

The BTA25-600BW is a three-terminal bidirectional thyristor (Triac) manufactured by STMicroelectronics, designed for general-purpose AC switching applications. It features an RD91 insulated package with a rated RMS on-state current of 25 A and a repetitive peak off-state voltage of 600 V. The device utilizes Snubberless technology to provide high commutation capability in three quadrants. Key electrical parameters include a maximum gate trigger current of 50 mA, a maximum gate trigger voltage of 1.3 V, and a non-repetitive surge peak on-state current of 260 A at 60 Hz. The component operates within a junction temperature range of -40 °C to +125 °C and offers an insulation RMS voltage rating of 2500 V.

Triacs Feature Summary

• Snubberless design providing very high commutation capability in three quadrants
• Insulated tab construction with 2500 VRMS isolation rating
• Low thermal resistance achieved through clip bonding technology
• UL1557 recognized component certification

Triacs Applications

• On/off function 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 code against the manufacturer's datasheet to ensure correct sensitivity and voltage ratings. Confirm that the RD91 package dimensions and recommended mounting torque align with the mechanical constraints of the target application. Ensure compliance with RoHS directives if environmental standards are required for the assembly process.

Triacs Selection Notes

Select this component when a 25 A RMS current capacity and 600 V blocking voltage are required for mains power switching. The Snubberless characteristic makes it suitable for inductive loads without external snubber networks. Verify that the gate drive circuit can supply at least 50 mA to ensure reliable triggering across the specified operating temperature range.

Triacs Part Context

This device belongs to the BTA25 series of Triacs from STMicroelectronics, which includes variants with different voltage ratings and packaging options. The series is engineered for robust performance in industrial and consumer AC power control environments. The RD91 package provides a standardized form factor for panel mounting and heat dissipation via conduction.

Triacs Replacement Considerations

Compatible substitutes within the same family include the BTA25-800BW for higher voltage requirements or the BTA25-600B for standard four-quadrant operation. Cross-brand replacements must match the 25 A current rating, 600 V voltage rating, and RD91 package footprint to ensure mechanical and electrical compatibility.