QJ4016LH4TP

Triacs Overview

The QJ4016LH4TP is a Littelfuse Alternistor triac rated for 400V peak repetitive off-state voltage and 16A RMS on-state current. It features a snubberless design suitable for high dv/dt applications, housed in an isolated TO-220AB package. The device supports a maximum junction temperature of 150°C and offers surge current capability up to 167A.

Triacs Feature Summary

• Snubberless operation eliminates external RC networks
• High thermal stability with 150°C junction rating
• Electrically isolated TO-220AB construction

Triacs Applications

• Solid state relays
• Industrial motor controls
• Lighting dimmers

Triacs Procurement Notes

Verify the specific suffix 'TP' indicates tape-and-reel packaging if bulk handling is required. Confirm the manufacturer is Littelfuse Inc., formerly associated with Wickmann components. Ensure the part number matches the 400V/16A specification exactly to avoid confusion with similar series variants.

Triacs Selection Notes

Select this component for circuits requiring robust switching without snubber networks. The TO-220AB package provides mechanical strength and thermal dissipation. Verify that the 400V blocking voltage meets the circuit's peak line requirements and that the 16A RMS current capacity aligns with the load profile.

Triacs Part Context

This part belongs to the QJxx16xHx series of high-power triacs from Littelfuse. It represents the 400V variant within a family offering voltages up to 1200V. The series is characterized by high surge capability and reliability in industrial environments.

Triacs Replacement Considerations

Consult official Littelfuse substitution guides for direct equivalents. Generic replacements may lack the specific snubberless characteristics or isolation properties of the original component.