QK006LH4TP

Triacs Overview

The Littelfuse QK006LH4TP is a bidirectional thyristor (triac) from the Qxx06xxH series, rated for 1000 V repetitive peak off-state voltage and 6 A RMS on-state current. It features an 85 A non-repetitive surge current capability and operates within a junction temperature range of -40 °C to +125 °C. The device utilizes a TO-220-2 package with an isolated flange mount configuration. Key electrical parameters include a maximum holding current of 35 mA, a gate trigger voltage of 1.3 V, and a gate trigger current of 35 mA. The component exhibits a typical on-state voltage drop of 1.6 V and a maximum leakage current of 20 µA at rated voltage.

Triacs Feature Summary

• High commutation capability suitable for demanding AC switching environments
• Electrically isolated case design for enhanced safety in high-voltage applications
• Robust surge handling capacity for transient protection scenarios

Triacs Applications

• AC power control circuits
• Solid-state relays
• Motor speed control systems

Triacs Procurement Notes

Verify part authenticity through authorized Littelfuse distributors or certified suppliers. Confirm RoHS compliance status and specific manufacturing lot codes against official datasheets. Ensure storage conditions maintain component integrity prior to assembly. Cross-reference ordering suffixes to confirm exact pinout and packaging specifications required for the target application.

Triacs Selection Notes

Select this component when a 1000 V rating is required for AC line applications. Compare against the Q6006LH4TP variant if a lower 600 V rating suffices for the circuit design. Evaluate thermal management requirements based on the 6 A RMS current rating and TO-220-2 package thermal resistance. Ensure gate drive characteristics align with the 35 mA trigger current specification.

Triacs Part Context

This triac belongs to the Qxx06xxH family, designed for general-purpose AC switching. The 'Q' prefix denotes the Alternistor type, which offers improved commutation performance compared to standard triacs. The 'H' suffix indicates high dv/dt capability, making it suitable for noisy industrial environments where rapid voltage changes occur across the terminals.

Triacs Replacement Considerations

The Q6006LH4TP serves as a direct functional substitute with identical pinout and mechanical dimensions but reduced voltage rating to 600 V. Verify that the system voltage does not exceed 600 V before substituting. Other generic 6 A TO-220 triacs may fit mechanically but require careful evaluation of gate sensitivity and dv/dt ratings.