QJ8010LH4TP

Triacs Overview

The Littelfuse QJ8010LH4TP is a high-temperature Alternistor TRIAC rated for 10 A RMS on-state current and 800 V repetitive peak off-state voltage. It operates in Quadrants I, II, and III with a maximum junction temperature of 150°C. The device features a non-repetitive surge current capability of 120 A at 60 Hz and a gate trigger current (IGT) of 35 mA. Packaged in an electrically isolated TO-220AB (L-Package), it provides 2500 VRMS isolation between the mounting tab and terminals.

Triacs Feature Summary

• Alternistor design enables reliable switching in Quadrants I, II, and III without requiring snubber circuits for highly inductive loads.
• Electrically isolated TO-220 package allows direct heat sinking to chassis while maintaining 2500 VRMS isolation.
• Glass-passivated junctions ensure robust protection against transient voltage events.

Triacs Applications

• AC solid-state switches and phase control applications
• Heating element control systems
• Motor speed control circuits
• Lighting dimmers and controls

Triacs Procurement Notes

Verify the specific ordering suffix matches the required package type and lead form dimensions. Confirm that the 35 mA gate sensitivity aligns with the driver circuit capabilities. Ensure the application environment remains within the specified -40°C to +150°C operating junction temperature range to maintain device reliability.

Triacs Selection Notes

Select this component when high commutation performance is required for inductive loads. The L-package isolation is critical if the device must be mounted to a grounded heatsink. Verify that the 800 V rating exceeds the peak line voltage plus transients. Consider thermal resistance values for proper heatsink sizing to keep junction temperature below 150°C.

Triacs Part Context

This part belongs to the QJxx10xHx series of 10 A high-temperature Alternistors. It shares electrical characteristics with other variants in the series but differs in gate sensitivity and package isolation. The 'L' designation specifically indicates the electrically isolated TO-220AB package configuration.

Triacs Replacement Considerations

QJ8010RH4TP: Standard TRIAC in non-isolated TO-220R package. QJ8010NH4TP: Surface mount Alternistor in TO-263 D²PAK package. QJ8010LH3TP: Alternistor with lower 10 mA gate sensitivity.