QK012NH5TP

Triacs Overview

The Littelfuse QK012NH5TP is a bidirectional triac designed for high-voltage AC switching applications. It features a rated repetitive off-state voltage (VDRM) of 1 kV and an RMS on-state current (It RMS) of 12 A. The device operates within a temperature range of -40 °C to +125 °C and utilizes an SMTO-263-2 surface-mount package. Key electrical parameters include a maximum holding current of 50 mA, a gate trigger voltage of 1.3 V, and a gate trigger current of 50 mA. Non-repetitive peak on-state currents are specified at 110 A and 120 A, with an on-state voltage of 1.6 V and a leakage current of 10 uA under VDRM conditions.

Triacs Feature Summary

• Bidirectional conduction capability for AC load control
• High voltage blocking rating suitable for mains-level applications
• Surface-mount construction for automated PCB assembly

Triacs Applications

• AC motor speed control circuits
• Solid-state relay output stages
• Lighting dimmer switches

Triacs Procurement Notes

Verify the specific Littelfuse datasheet revision to confirm RoHS compliance status and REACH SVHC declarations prior to integration. Confirm that the SMTO-263-2 footprint matches the target PCB layout dimensions. Ensure thermal management strategies account for the 125 °C maximum junction temperature during continuous operation.

Triacs Selection Notes

Select this component when a 1 kV blocking voltage and 12 A RMS current capacity are required in a compact surface-mount form factor. Evaluate the 50 mA gate trigger requirements against the driving circuit's output capabilities. Consider the SMTO-263-2 package size constraints relative to available board space and thermal dissipation needs.

Triacs Part Context

This part belongs to the Littelfuse Qxx12xHx series of triacs. The series provides standardized high-voltage switching solutions for industrial and consumer AC power control applications. The QK012NH5TP specifically denotes the 12 A current rating and 1 kV voltage class within this product family.

Triacs Replacement Considerations

Consult official Littelfuse substitution guides for verified equivalents. Cross-reference pinouts and thermal characteristics if considering alternative manufacturers' triacs with similar ratings.