QJ8010LH5TP

Triacs Overview

The Littelfuse QJ8010LH5TP is an Alternistor TRIAC rated for 800 V repetitive peak off-state voltage and 10 A RMS on-state current. It operates in Quadrants I, II, and III with a maximum DC gate trigger current of 50 mA. The device features glass-passivated junctions and a TO-220AB isolated package (L-Package) providing electrical isolation at 2500 VRMS. It supports a maximum junction temperature of 150°C and handles non-repetitive surge currents up to 120 A at 60 Hz.

Triacs Feature Summary

• Alternistor design enables high commutation performance in highly inductive load applications without requiring external snubber circuits.
• Electrically isolated mounting tab allows direct heat sinking while maintaining safety isolation from circuit ground.
• Solid-state switching eliminates arcing and contact bounce associated with mechanical relays.

Triacs Applications

• AC solid-state switches and phase control systems
• Heating element control and lighting dimmers
• Motor speed controls for power tools and appliances

Triacs Procurement Notes

Verify the specific suffix 'LH5' corresponds to the required 50 mA gate sensitivity and TO-220 isolated package configuration. Confirm that the application requires Alternistor operation across Quadrants I, II, and III rather than standard TRIAC functionality. Ensure thermal management aligns with the specified junction-to-case thermal resistance values.

Triacs Selection Notes

Select this component when high dv/dt immunity and robust commutation are necessary for inductive loads. The isolated package is suitable for designs requiring galvanic isolation between the heatsink and the circuit. Verify that the 50 mA gate drive capability matches the available driver output current.

Triacs Part Context

This part belongs to the QJxx10xHx series of 10 A High Temperature Alternistors. It shares the core semiconductor structure with other variants in the family but differs in package type and gate sensitivity parameters defined by the ordering suffix.

Triacs Replacement Considerations

QJ8010RH5TP offers identical electrical characteristics in a non-isolated TO-220 package. QJ8010NH5TP provides the same specifications in a surface-mount D2PAK format.

Triacs FAQ

Does the QJ8010LH5TP operate in all four quadrants?

No, as an Alternistor TRIAC, it operates in Quadrants I, II, and III only. It does not function in Quadrant IV.

What is the isolation rating of the L-Package?

The L-Package is UL recognized under E71639 for electrical isolation at 2500 VRMS.

Is a snubber circuit required for this device?

Snubber circuits are generally not required for this Alternistor TRIAC, even with extremely inductive loads, due to its high commutation performance.