QJ8010LH3TP

Triacs Overview

The Littelfuse QJ8010LH3TP is a high-temperature Alternistor TRIAC rated for 10 A RMS on-state current and 800 V repetitive peak off-state voltage. Housed in an electrically isolated TO-220AB (L-package) with a maximum junction temperature of 150°C, it operates in Quadrants I, II, and III. Key electrical parameters include a gate trigger current of 10 mA, a holding current maximum of 15 mA, and a non-repetitive surge current capability of 120 A at 60 Hz. The device features glass-passivated junctions and requires no snubber circuit for highly inductive loads.

Triacs Feature Summary

• Electrically isolated mounting tab recognized under UL 1557 for enhanced safety
• Three-quadrant operation eliminates the need for snubber circuits in inductive applications
• Solid-state switching prevents arcing and contact bounce associated with mechanical relays

Triacs Applications

• AC solid-state switches and static switching relays
• Heater control and lighting dimmer circuits
• Motor speed control systems
• Power tools and home appliance controls

Triacs Procurement Notes

Verify the specific package isolation requirements against the application design. Confirm that the 10 mA gate sensitivity matches the driving circuit capabilities. Ensure thermal management strategies account for the specified junction-to-case resistance values to maintain safe operating temperatures during continuous conduction.

Triacs Selection Notes

Select this component when high commutation performance is required for inductive loads without external snubbers. Compare the 10 mA gate sensitivity against standard TRIAC options if lower drive power is available. Consider the isolated package for designs requiring galvanic separation between the heat sink and the circuit ground.

Triacs Part Context

This part belongs to the QJxx10xHx series of 10 A high-temperature thyristors. It shares the same core semiconductor structure as the non-isolated QJ8010R4TP but utilizes the L-package for electrical isolation. The 'H3' suffix specifically denotes the 10 mA gate sensitivity level optimized for Quadrants I, II, and III operation.

Triacs Replacement Considerations

QJ8010RH3TP serves as the non-isolated alternative within the same series. Standard TRIACs like QJ8010R4TP may require snubber circuits for inductive loads due to their two-quadrant limitation.