QK025L5TP

Triacs Overview

The Littelfuse QK025L5TP is a bidirectional triac belonging to the Qxx25xx series, designed for high-power switching applications. It features a rated repetitive off-state voltage (VDRM) of 1 kV and an on-state RMS current (It RMS) of 25 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 gate trigger current (Igt) of 50 mA, a holding current (Ih) maximum of 100 mA, and an on-state voltage of 1.8 V. Leakage current at VDRM is specified at 20 uA.

Triacs Feature Summary

• Bidirectional conduction capability for AC load control
• High thermal stability with operation up to +125°C
• Surface-mount construction for automated PCB assembly

Triacs Applications

• AC motor speed control circuits
• Solid-state relay designs
• Industrial power switching modules

Triacs Procurement Notes

Verify the specific suffix 'L' against official Littelfuse documentation to confirm pinout orientation or variant specifics, as suffixes often denote mechanical or electrical distinctions. Ensure component authenticity through authorized channels to prevent counterfeit infiltration. Cross-reference the datasheet revision date to guarantee parameter accuracy during integration.

Triacs Selection Notes

Select this component when a 1 kV blocking voltage and 25 A continuous current are required in a compact surface-mount form factor. Compare the 50 mA gate trigger requirement against available driver capabilities. Evaluate thermal management needs given the 25 A rating and SMTO-263-2 package constraints for the specific application environment.

Triacs Part Context

This triac is part of the Qxx25xx family from Littelfuse, which standardizes 25 A devices across various voltage ratings. The QK025L5TP specifically addresses the 1000V segment of this lineup. It shares core electrical characteristics with siblings like the QK025N5TP but may differ in physical pin configuration or specific testing criteria defined by the manufacturer's internal coding.

Triacs Replacement Considerations

Direct replacements must match the 1 kV / 25 A specification and SMTO-263-2 package. Verify if alternative manufacturers offer equivalent Igt and Vgt parameters. Check for pin-compatible substitutes if board layout changes are prohibited.