QJ8040KH6TP

Triacs Overview

The Littelfuse QJ8040KH6TP is a high-temperature TRIAC from the QJxx40xx series, rated for 800 V repetitive peak off-state voltage and 40 A RMS on-state current. It utilizes an isolated TO-218AC (SMTO-218) through-hole package with a flange mount configuration. The device supports junction temperatures up to +150°C and operates within a range of -40°C to +150°C. Key electrical parameters include a maximum non-repetitive surge current of 500 A, a holding current of 80 mA, and a gate trigger voltage of 1.3 V. It features a low leakage current of 20 uA at rated voltage.

Triacs Feature Summary

• High-temperature operation capability up to 150°C junction temperature
• Electrically isolated case construction for safe mounting to heatsinks
• Snubberless design optimized for reduced component count in switching circuits

Triacs Applications

• Industrial motor control systems requiring high thermal stability
• Solid-state relays operating in elevated temperature environments
• Power regulation circuits for commercial heating equipment

Triacs Procurement Notes

Verify the specific suffix KH6TP against official Littelfuse documentation to confirm isolation class and packaging details. Ensure compatibility with existing thermal management designs given the 150°C rating. Confirm RoHS compliance status via the manufacturer's latest datasheet before finalizing procurement specifications.

Triacs Selection Notes

Select this component when applications demand high-voltage handling combined with robust thermal performance. The isolated TO-218AC package facilitates direct heatsink mounting without additional insulators. Compare gate trigger requirements against driving circuit capabilities to ensure reliable turn-on under varying temperature conditions.

Triacs Part Context

This part belongs to the QJxx40xx series of high-temperature TRIACs manufactured by Littelfuse. It shares the core 40A current rating with other variants but distinguishes itself through the specific voltage rating of 800V and the isolated TO-218AC package style designed for industrial durability.

Triacs Replacement Considerations

Direct substitutes may include other 800V 40A isolated TRIACs in TO-218 packages from Littelfuse or compatible manufacturers. Verify pinout compatibility and thermal resistance values before substitution. Cross-reference datasheets for exact gate trigger characteristics to maintain circuit stability.