Q4006RH4

Triacs Overview

The Littelfuse Q4006RH4 is a bidirectional triac belonging to the Qxx06xHx series, designed for power control applications. It features a TO-252-3 (DPAK) surface-mount package and supports an RMS on-state current of 6 A with a rated repetitive peak off-state voltage of 400 V. The device exhibits a low on-state voltage of 1.6 V and a maximum holding current of 35 mA. Gate triggering requirements are specified at 1.3 V and 10 mA. It operates within a temperature range of -40°C to +125°C and maintains a low off-state leakage current of 10 µA.

Triacs Feature Summary

• High thermal efficiency enabled by low on-state voltage drop
• Sensitive gate drive characteristics for simplified circuit design
• Robust performance in high-temperature environments up to 125°C

Triacs Applications

• Solid-state relay modules
• AC motor speed control circuits
• Lighting dimmer switches

Triacs Procurement Notes

Verify component authenticity through authorized Littelfuse distributors or certified partners. Confirm RoHS compliance status via official datasheets before integration. Ensure storage conditions prevent moisture damage to the surface-mount package. Validate part markings against manufacturer specifications to avoid counterfeit risks during assembly.

Triacs Selection Notes

Select this component when a 6 A RMS current rating and 400 V blocking voltage are required in a compact DPAK footprint. Consider the 1.6 V on-state voltage for thermal management calculations. Verify that the 10 mA gate trigger current aligns with the available driver output capabilities in the target application circuit.

Triacs Part Context

This triac is part of the Qxx06xHx family from Littelfuse, which focuses on medium-power thyristor solutions. The series provides standardized electrical characteristics for industrial and consumer power control needs. The Q4006RH4 specifically addresses applications requiring reliable switching in space-constrained printed circuit board designs.

Triacs Replacement Considerations

Direct substitutes include other 6 A, 400 V triacs in TO-252-3 packages from Littelfuse or equivalent manufacturers. Verify pinout compatibility and thermal resistance values before substitution. Ensure gate sensitivity parameters match the existing drive circuit constraints.