Q4012NH5TP

Triacs Overview

The Littelfuse Q4012NH5TP is a bidirectional triac designed for surface-mount applications. It features an RMS on-state current of 12 A and a rated repetitive off-state voltage (VDRM) of 400 V. The device exhibits a maximum on-state voltage of 1.6 V and a gate trigger current (Igt) of 50 mA. It operates within a temperature range of -40 °C to +125 °C and utilizes an SMTO-263-2 package.

Triacs Feature Summary

• Surface-mount construction in an SMTO-263-2 package for automated PCB assembly
• High thermal stability with a maximum operating junction temperature of +125 °C
• Robust surge handling capability with non-repetitive peak on-state currents up to 120 A

Triacs Applications

• Solid-state relay circuits requiring compact form factors
• AC power switching and motor control systems
• Lighting dimmer modules and phase-control applications

Triacs Procurement Notes

Verify the specific suffix against official Littelfuse documentation to confirm pinout orientation and electrical tolerances. Ensure the procurement channel provides valid traceability records. Confirm that the SMTO-263-2 package matches the target footprint requirements before finalizing orders.

Triacs Selection Notes

Select this component when a 12 A RMS current rating and 400 V blocking voltage are required in a surface-mount configuration. Compare the 50 mA gate trigger current against available drive circuit capabilities. Evaluate the thermal resistance of the SMTO-263-2 package relative to the expected heat dissipation in the final enclosure design.

Triacs Part Context

This part belongs to the Teccor Qxx12xHx series of high-power triacs manufactured by Littelfuse. The series is engineered for industrial and consumer AC power control applications, offering a balance of high current density and reliable switching performance in standardized surface-mount packages.

Triacs Replacement Considerations

Direct substitutes include other 12 A, 400 V surface-mount triacs from Littelfuse or competitors. Verify compatibility regarding the SMTO-263-2 footprint, pin assignment, and thermal characteristics before substitution.