QJ6040K4TP

Triacs Overview

The Littelfuse QJ6040K4TP is a bidirectional triac in the QJxx40xx series, rated for 40 A RMS on-state current and 600 V repetitive peak off-state voltage. It features a non-repetitive surge current capacity of 500 A and a maximum holding current of 80 mA. The device operates within a junction temperature range of -40°C to +150°C and utilizes an SMTO-218 through-hole package. Key electrical parameters include a gate trigger voltage of 1.3 V, gate trigger current of 100 mA, and an on-state voltage of 1.6 V.

Triacs Feature Summary

• High thermal stability with a maximum operating temperature of +150°C
• Robust surge handling capability with 500 A non-repetitive peak current
• Integrated gate control for reliable AC switching applications

Triacs Applications

• AC power switching circuits
• Phase control systems
• Industrial motor controls

Triacs Procurement Notes

Verify the specific suffix against official Littelfuse documentation to confirm exact electrical tolerances and packaging variations. Ensure the procurement channel provides valid manufacturer traceability. Confirm that the SMTO-218 package dimensions match the target PCB layout requirements before finalizing orders.

Triacs Selection Notes

Select this component when a 600 V rating is required alongside 40 A continuous current handling. Compare the 150°C maximum junction temperature against alternatives if higher thermal limits are necessary. Verify that the 100 mA gate trigger current aligns with the driving circuit capabilities.

Triacs Part Context

This part belongs to the QJxx40xx series of high-performance triacs from Littelfuse. It shares the 40 A current rating with other variants but differs in voltage ratings and thermal characteristics compared to standard TO-218 packages. The SMTO-218 housing provides enhanced mounting options for industrial environments.

Triacs Replacement Considerations

Direct substitutes include the QJ6040JH7TP, which shares identical electrical ratings and package type. Verify pinout compatibility and thermal resistance specifications before substituting.