QJ4006DH3TP

Triacs Overview

The QJ4006DH3TP is a bidirectional triac from Littelfuse, designed for AC switching applications. It features an RMS on-state current (It RMS) of 6 A and a rated repetitive off-state voltage (VDRM) of 400 V. The device exhibits a maximum on-state voltage of 1.4 V and a gate trigger voltage (Vgt) of 1.3 V with a gate trigger current (Igt) of 35 mA. Leakage current at VDRM is limited to 10 uA. It operates within a temperature range of -40 C to +150 C and is housed in a surface-mount TO-252-3 package.

Triacs Feature Summary

• Bidirectional AC switching capability for phase control
• Glass-passivated junctions for parameter stability
• RoHS compliant construction

Triacs Applications

• AC speed controls
• Temperature modulation controls
• Lighting controls requiring noise immunity

Triacs Procurement Notes

Verify the specific suffix 'H' confirms RoHS compliance and lead-free status as per Littelfuse documentation. Confirm the TO-252-3 package variant matches the design footprint. Check for any REACH SVHC declarations relevant to the manufacturing region. Ensure the 6A rating aligns with thermal management requirements in the final assembly.

Triacs Selection Notes

Select this component when a 400V blocking voltage and 6A continuous current are required in a compact SMD form factor. Compare against higher voltage variants like QJ6006 if system transients exceed 400V. Consider the 35mA gate drive requirement for circuit interface design. Evaluate thermal dissipation needs given the 1.4V on-state drop at full load.

Triacs Part Context

This part belongs to the QJxx06xH series of Alternistor Triacs. It shares the 6A current rating family with models like QJ4008DH3TP but differs in voltage and gate characteristics. The DPAK/TO-252 package is standard for surface mount power control applications in consumer and industrial electronics.

Triacs Replacement Considerations

Direct substitutes include other Littelfuse QJ4006 variants with identical electrical ratings. Verify pinout compatibility for TO-252 packages. Cross-reference with equivalent 6A/400V triacs from other manufacturers only if datasheet parameters match exactly.