BTA25-400B

Triacs Overview

The BTA25-400B is a standard triac manufactured by STMicroelectronics, designed for general-purpose AC power control applications. It features a repetitive peak off-state voltage (VDRM) of 400 V and an RMS on-state current (IT(RMS)) rating of 25 A. The device utilizes the RD-91 package, which facilitates screw mounting for efficient thermal dissipation. Key electrical characteristics include a maximum gate trigger current (IGT) of 100 mA and a peak non-repetitive surge current capability of 260 A. The component operates within a junction temperature range from -40°C to +125°C, ensuring reliability in industrial environments.

Triacs Feature Summary

• High current handling capability with a 25 A RMS on-state rating suitable for demanding loads.
• Robust surge tolerance with a 260 A peak non-repetitive current rating.
• Secure mechanical attachment via the RD-91 screw-mount package design.

Triacs Applications

• Industrial motor speed control systems
• Solid-state relays for AC switching
• General purpose AC power regulation

Triacs Procurement Notes

Verify the specific suffix against official STMicroelectronics documentation to confirm exact electrical tolerances and packaging variations. Ensure the supplier provides genuine components with traceable origin. Cross-reference the part number with the latest datasheet to validate compatibility with your circuit requirements before procurement.

Triacs Selection Notes

Select this component when a 400 V blocking voltage and 25 A continuous current are required. The RD-91 package necessitates a heatsink interface compatible with screw mounting. Consider the 100 mA gate trigger current when designing the drive circuitry to ensure reliable turn-on under all operating conditions.

Triacs Part Context

This triac belongs to the BTA series of high-current devices from STMicroelectronics. The series is engineered for robust performance in AC power switching applications. The BTA25 variant specifically addresses needs for moderate-to-high current loads where standard packages may be insufficient.

Triacs Replacement Considerations

Consult official cross-reference lists for verified substitutes. Ensure any replacement matches the 25 A current rating, 400 V voltage rating, and RD-91 package dimensions for direct interchangeability.