QK015R5

Triacs Overview

The Littelfuse QK015R5 is a bidirectional triac from the Teccor Qxx15xx series, designed for AC power control applications. It features a 1 kV rated repetitive off-state voltage (VDRM) and conducts an RMS on-state current of 15 A. The device operates within a junction temperature range of -40°C to +125°C and utilizes a TO-220-2 through-hole package. Key electrical parameters include a maximum holding current of 70 mA, a gate trigger voltage of 2.5 V, and a gate trigger current ranging from 50 mA to 75 mA. The on-state voltage is specified at 1.6 V, with non-repetitive peak currents of 100 A or 200 A depending on pulse duration.

Triacs Feature Summary

• Integrated glass-passivated junctions ensure long-term parameter stability and device reliability under thermal stress.
• High dv/dt rating provides immunity against false triggering during rapid voltage transients in AC circuits.
• Electrically isolated mounting surface allows direct heatsink attachment without requiring external insulators.

Triacs Applications

• Solid-state relays for industrial load switching
• AC motor speed control systems
• Lighting dimmer circuits

Triacs Procurement Notes

Verify the specific ordering suffix to confirm package type and terminal configuration, as variations exist within the family. Confirm RoHS compliance status directly with the manufacturer documentation prior to integration. Ensure the selected variant matches the required voltage and current ratings for the target application circuit design.

Triacs Selection Notes

Select this component when a 1 kV blocking voltage and 15 A continuous current capacity are required in a standard through-hole form factor. Consider the 70 mA holding current limit for low-load applications to prevent latch-up issues. Evaluate thermal management requirements based on the 1.6 V on-state voltage drop at full load conditions.

Triacs Part Context

This part belongs to the Teccor Qxx15xx series of general-purpose triacs manufactured by Littelfuse. The series offers standardized electrical characteristics across various voltage ratings, allowing designers to swap components within the same current class while adjusting for different blocking voltage requirements in AC power control designs.

Triacs Replacement Considerations

The QK015R5TP is listed as an alias for this part number. Verify pinout compatibility and thermal resistance specifications before substituting with other 15 A, 1000 V triacs from competing manufacturers.