QK016RH4

Triacs Overview

The Littelfuse QK016RH4 is a bidirectional TRIAC belonging to the Qxx16xhx series, rated for 1000V VDRM and 16A IT(RMS). It features a non-repetitive peak on-state current of 167A or 200A depending on pulse width. The device has an on-state voltage of 1.6V, maximum holding current of 50mA, gate trigger voltage of 2V, and gate trigger current of 35mA. Leakage current at VDRM is 5µA. This component is currently listed as obsolete by the manufacturer.

Triacs Feature Summary

• Bidirectional switching capability for AC control applications
• High voltage blocking rating suitable for mains-level circuits
• Robust surge current handling capacity

Triacs Applications

• General AC power control circuits
• Solid-state relay inputs
• Lighting dimmer modules

Triacs Procurement Notes

Verify end-of-life status before design finalization. Confirm availability through secondary market channels if immediate replacement is required. Check RoHS compliance documentation for legacy stock verification. Ensure storage conditions maintain lead integrity for soldering processes.

Triacs Selection Notes

Consider the 1000V rating for high-voltage isolation requirements. Evaluate thermal management needs given the 16A RMS current capacity. Compare gate sensitivity parameters with available driver circuitry. Assess physical package constraints against existing PCB layouts.

Triacs Part Context

Part of the Qxx16xhx family of TRIACs designed for general purpose AC switching. The series offers standardized pinouts and electrical characteristics for interchangeable use in various power control designs. Littelfuse manufactures this line for industrial and consumer electronics markets.

Triacs Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Designers should consult Littelfuse application notes for equivalent series replacements or contact technical support for specific cross-reference recommendations.