QK006DH4RP

Triacs Overview

The Littelfuse QK006DH4RP is a bidirectional Alternistor TRIAC housed in a TO-252-3 surface-mount package. It features a rated repetitive off-state voltage (VDRM) of 1 kV and an RMS on-state current (ITRMS) of 6 A. The device supports a non-repetitive peak on-state current of 80 A with a maximum on-state voltage of 1.6 V. Gate triggering requires a maximum DC gate trigger voltage of 1.3 V and a current of 35 mA. The holding current maximum is 35 mA, while the off-state leakage current at VDRM is limited to 20 uA. Operating temperatures range from -40°C to +125°C.

Triacs Feature Summary

• Alternistor architecture provides two electrically separate SCR structures for enhanced dv/dt characteristics and superior turn-off behavior compared to standard triacs.
• Glass-passivated junctions ensure long-term reliability and parameter stability by providing a reliable barrier against junction contamination.
• Designed specifically for switching highly inductive loads with operating modes available in Quadrants I, II, and III.

Triacs Applications

• Switching highly inductive loads
• Industrial control circuits requiring high reliability
• AC power switching applications

Triacs Procurement Notes

Verify component authenticity through authorized Littelfuse distributors or direct manufacturer channels. Confirm RoHS compliance status and specific datasheet revisions prior to integration. Ensure supply chain documentation matches the exact QK006DH4RP part number to avoid substitution errors with similar series components.

Triacs Selection Notes

Select this component when high blocking voltage and robust inductive load handling are required in a compact surface-mount form factor. Compare against lower voltage Alternistor variants if system requirements allow reduced ratings. Verify thermal management capabilities within the TO-252 package for the intended current density.

Triacs Part Context

This device belongs to the Qxx06xxH series of bidirectional Alternistors from Littelfuse. The series offers current ratings from 6 A to 40 A and voltages from 200 V to 1000 V. These devices utilize specialized chip construction to combine the performance of inverse parallel SCRs with single-chip convenience.

Triacs Replacement Considerations

Q6006DH4RP is a related 600V variant within the same series. Verify voltage rating compatibility before substitution as the QK006DH4RP is rated for 1 kV.

Triacs FAQ

What is the primary advantage of the Alternistor structure over a standard Triac?

The Alternistor structure provides better turn-off behavior and enhanced dv/dt characteristics due to its two electrically separate SCR structures, making it suitable for highly inductive loads.

Does the QK006DH4RP support all standard triac triggering quadrants?

Yes, the device operates in Quadrants I, II, and III, allowing for flexible gate triggering configurations.

How does the glass passivation affect the device's longevity?

Glass-passivated junctions offer a reliable barrier against junction contamination, ensuring long-term reliability and parameter stability.