BTA445Z-800BTQ

Triacs Overview

The BTA445Z-800BTQ is a planar passivated high commutation three quadrant triac manufactured by WeEn Semiconductors. It is housed in an IITO3P package and designed for circuits experiencing high static and dynamic dV/dt and dI/dt. The device supports an RMS current of 45 A with a non-repetitive peak on-state current of 495 A. It features a rated repetitive off-state voltage of 800 V and a maximum on-state voltage of 1.7 V. The component operates within a temperature range of -40°C to +150°C, maintaining full RMS current commutation at maximum junction temperature without requiring a snubber circuit.

Triacs Feature Summary

• Planar passivated construction ensures robust performance under high commutation stress conditions.
• Three-quadrant operation capability allows reliable switching across multiple gate trigger polarities.
• High thermal stability enables full current commutation at the maximum rated junction temperature of 150°C.

Triacs Applications

• Industrial motor control systems requiring high dv/dt immunity
• High-power AC power regulation circuits
• Applications demanding high junction operating temperature capability

Triacs Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package orientation and marking style. Confirm RoHS compliance status and chemical content declarations prior to integration. Ensure the procurement channel provides valid traceability records matching the manufacturer's production data.

Triacs Selection Notes

Select this component when applications require high surge current handling and reliable commutation at elevated temperatures. The IITO3P package facilitates effective heat dissipation for high-power scenarios. Verify that the gate trigger requirements align with the specified maximum values for the intended control circuit design.

Triacs Part Context

This part belongs to the BTA series of thyristors from WeEn Semiconductors, specifically engineered for industrial environments. The BTA445Z variant represents a high-current solution within the 800 V blocking voltage class. It is positioned as a volume production component suitable for demanding power electronics applications.

Triacs Replacement Considerations

Cross-reference with equivalent IITO3P packaged triacs offering comparable 45 A RMS and 800 V ratings. Verify pinout compatibility and thermal resistance characteristics before substitution.

Triacs FAQ

Does the BTA445Z-800BTQ require a snubber circuit for operation?

No, the device is designed to commutate the full RMS current at the maximum rated junction temperature without the aid of a snubber circuit.

What is the maximum non-repetitive on-state current for this triac?

The maximum non-repetitive on-state current is 495 A.