BTA45-800BQ

Triacs Overview

The BTA45-800BQ is a standard triac manufactured by WeEn Semiconductors, designed for high-voltage and high-current switching applications. It features an RMS on-state current of 45 A and a rated repetitive peak off-state voltage of 800 V. The device supports non-repetitive surge currents of 450 A at 50 Hz and 495 A at 60 Hz. Key electrical parameters include a maximum on-state voltage of 1.22 V, a holding current of up to 80 mA, and a gate trigger voltage of 1.3 V with a gate trigger current of 70 mA. It operates within a junction temperature range up to 150°C and is housed in a TO-3P-3 (SC-65-3) through-hole package.

Triacs Feature Summary

• Planar passivated construction ensures voltage ruggedness and long-term reliability under harsh conditions.
• Capable of commutating full rated RMS current at maximum junction temperature without requiring external snubber circuits.
• Designed for high bidirectional transient handling and robust blocking voltage capability.

Triacs Applications

• Motor drive and control systems
• Industrial power regulation
• Lighting dimming circuits
• HVAC equipment

Triacs Procurement Notes

Verify the specific ordering suffix and marking orientation against the official datasheet before procurement. Confirm RoHS compliance status and check for any recent Product Change Notifications (PCNs) regarding packaging or assembly changes. Ensure the supplier provides valid traceability documentation matching the manufacturer's specifications.

Triacs Selection Notes

Select this component when a standard triac with 45 A continuous current and 800 V blocking voltage is required. The TO-3P package offers thermal performance suitable for high-power dissipation. Verify that the application circuit can handle the specified gate trigger current of 70 mA and that the dV/dt requirements are met by the device's inherent characteristics.

Triacs Part Context

This part belongs to the BTA series of planar passivated triacs from WeEn Semiconductors. It shares the same core die and electrical architecture as the BTA450Z-800BTQ but utilizes a different package configuration. The BTA45-800BQ is specifically designated for through-hole mounting in industrial and commercial power electronics.

Triacs Replacement Considerations

Direct functional equivalents include the BTA450Z-800BTQ, which shares identical electrical ratings but differs in physical packaging. Cross-reference pinouts and thermal resistance values when substituting between TO-3P and similar high-power packages.