QK016LH4TP

Triacs Overview

The Littelfuse QK016LH4TP 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 16 A. The device exhibits a maximum on-state voltage of 1.6 V and a leakage current of 5 uA at VDRM. Gate triggering requirements include a maximum holding current of 50 mA, a gate trigger voltage (Vgt) of 1.3 V, and a gate trigger current (Igt) of 35 mA. It operates within a temperature range of -40 C to +125 C and is housed in a TO-220-2 package.

Triacs Feature Summary

• High voltage blocking capability suitable for demanding AC power switching environments
• Robust thermal performance with a wide operating temperature range up to 125 C
• Defined gate sensitivity characteristics for reliable triggering in control circuits

Triacs Applications

• Industrial motor speed control systems
• Solid-state relays requiring high voltage isolation
• AC power regulation circuits

Triacs Procurement Notes

Verify the specific Littelfuse datasheet for the QK016LH4TP to confirm RoHS compliance status and REACH SVHC details before integration. Ensure that the TO-220-2 mounting interface matches the thermal management design of the target assembly. Cross-reference the gate trigger parameters with the driving circuit capabilities to guarantee proper turn-on under all operating conditions.

Triacs Selection Notes

Select this component when a 1 kV rating is required rather than lower voltage alternatives like the Q8016LH4TP. Confirm that the 16 A RMS current capacity meets the load requirements without excessive derating. Evaluate the TO-220-2 package suitability for the available board space and heatsinking infrastructure compared to other thyristor form factors.

Triacs Part Context

This part belongs to the Littelfuse Qxx16xHx series of thyristors. It shares the 16 A current rating and TO-220-2 packaging with other members of the family but differs in its 1 kV voltage rating. This distinguishes it from lower voltage variants such as the 800 V Q8016LH4TP while maintaining similar thermal and current handling characteristics.

Triacs Replacement Considerations

Direct substitutes within the same voltage class must be verified against the official Littelfuse cross-reference documentation. Components like the Q8016LH4TP are not electrically equivalent due to the difference in VDRM ratings.