BTA40-400B

Triacs Overview

The BTA40-400B is a standard TRIAC manufactured by STMicroelectronics, designed for general-purpose AC switching applications. It features an RMS on-state current rating of 40 A and a repetitive peak off-state voltage of 400 V. The device utilizes clip assembly technology to provide superior surge current handling capabilities. It operates within a junction temperature range of -40°C to +125°C and includes an internal ceramic pad providing voltage insulation rated at 2500 VRMS, complying with UL standards.

Triacs Feature Summary

• High power capability with 40A RMS on-state current
• Clip assembly technique for enhanced surge current handling
• Voltage insulated tab compliant with UL standards

Triacs Applications

• Static relays
• Heating regulation systems
• Induction motor starting circuits
• Phase control in light dimmers
• Motor speed controllers

Triacs Procurement Notes

Verify the specific part number against official STMicroelectronics documentation to confirm availability and exact specifications. Ensure that the procurement channel provides genuine components with traceable manufacturing data. Cross-reference technical parameters such as voltage ratings and package types before finalizing orders to prevent compatibility issues in AC switching designs.

Triacs Selection Notes

Select this component for applications requiring robust AC switching with high surge tolerance. The 400V rating suits lower voltage AC mains applications compared to higher voltage variants. Consider the RD91 package dimensions for thermal management and panel mounting requirements. Verify gate trigger characteristics against the driving circuit capabilities to ensure reliable commutation.

Triacs Part Context

The BTA40-400B belongs to the BTA/BTB40-41 series of standard TRIACs from STMicroelectronics. This series is characterized by its suitability for general-purpose AC switching tasks. The device shares common design features with other members of the family, such as the use of clip bonding technology and insulated packaging options, tailored for industrial and consumer AC control environments.

Triacs Replacement Considerations

Compatible substitutes include other 40A TRIACs from the same manufacturer series, such as the BTA40-600B or BTA40-700B, provided the system voltage does not exceed their respective ratings. Ensure that any replacement maintains the required insulation voltage and physical package compatibility for direct integration.