QK010N4TP

Triacs Overview

The Littelfuse QK010N4TP is a bidirectional triac designed for high-voltage power control applications. It features a rated repetitive off-state voltage (VDRM) of 1 kV and an on-state RMS current (It RMS) of 10 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 35 mA, a gate trigger voltage of 2.5 V, and a gate trigger current ranging from 25 mA to 50 mA. Non-repetitive peak on-state currents are specified at 100 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

• High voltage blocking capability suitable for demanding AC power switching environments
• Surface-mount construction in an SMTO-263-2 package for automated assembly integration
• Robust thermal performance supporting operation up to 125°C junction temperature

Triacs Applications

• Industrial motor speed control systems
• Solid-state relay implementations
• AC power regulation circuits

Triacs Procurement Notes

Verify the specific Littelfuse datasheet for the QK010N4TP to confirm RoHS compliance status and REACH SVHC declarations prior to procurement. Ensure that the ordering suffix matches the required tape-and-reel or tube packaging configuration. Confirm that the manufacturer's lead time aligns with production schedules, as supply chain variability may affect delivery timelines for this component.

Triacs Selection Notes

Select the QK010N4TP when a 1 kV voltage rating is required for the application. Compare the 35 mA holding current against load requirements to ensure reliable latching. Verify that the gate drive circuit can supply the necessary 25 mA to 50 mA trigger current. Consider the SMTO-263-2 footprint constraints during PCB layout design to ensure proper thermal dissipation and mechanical fit.

Triacs Part Context

This component belongs to the Littelfuse Qxx10xx series of thyristors. It shares common characteristics with other devices in the family, such as the QK010N5TP, which differs primarily in its higher gate trigger current specifications. The series is categorized under general-purpose triacs intended for robust power control tasks in industrial and commercial equipment.

Triacs Replacement Considerations

The QK010N5TP serves as a functional substitute within the same series, offering identical voltage and current ratings but with different gate sensitivity parameters. Verify that the alternative part's gate trigger current requirements are compatible with the existing driver circuitry before substitution.