BTA312-800CT,127

Triacs Overview

The BTA312-800CT,127 is a four-quadrant logic-level triac manufactured by WeEn Semiconductors. It features a planar passivated structure housed in a TO-220AB (SOT78) plastic package with horizontal rail pack configuration. The device supports an RMS on-state current of 12 A and withstands repetitive peak voltages up to 800 V. It offers high commutation capabilities, allowing full RMS current commutation at maximum junction temperature without snubber assistance. Key electrical parameters include a non-repetitive peak on-state current of 100 A, a gate trigger current maximum of 50 mA across all quadrants, and a critical rate of voltage rise of 50 V/µs.

Triacs Feature Summary

• Four-quadron logic-level sensitivity for direct interfacing with low-power drivers such as microcontrollers.
• High commutation performance enabling full rated RMS current switching at maximum junction temperatures without external snubber circuits.
• Planar passivated construction designed for robust operation in environments with high static and dynamic dv/dt and di/dt stresses.

Triacs Applications

• Industrial motor control systems requiring high dv/dt immunity.
• Solid-state relays and contactor replacement circuits.
• General-purpose AC power switching applications.

Triacs Procurement Notes

Verify the specific suffix

Triacs Selection Notes

Select this component when circuit design requires logic-level gate sensitivity combined with high commutation capability. Ensure the application operates within the 800 V blocking voltage limit and 12 A RMS current rating. Verify that the thermal management strategy accommodates the TO-220AB package's thermal characteristics under expected load conditions.

Triacs Part Context

This part belongs to the BTA312 series of three-quadrant and four-quadrant triacs from WeEn Semiconductors. The series is engineered for industrial applications demanding reliable switching under harsh electrical conditions. The CT variant specifically denotes logic-level gate sensitivity, distinguishing it from standard gate variants within the same family.

Triacs Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Cross-reference with other four-quadrant logic-level triacs in the TO-220AB package only after verifying exact electrical parameter compatibility.