Q4006VH4TP

Triacs Overview

The Q4006VH4TP is a 400 V, 6 A Alternistor triac from Littelfuse. It features snubberless operation and is housed in a TO-251 (TO-251-3) surface-mount package. Key electrical parameters include an RMS on-state current of 6 A, a maximum gate trigger voltage of 35 mA, and a holding current of 35 mA. The device operates within a temperature range of -40 °C to +125 °C.

Triacs Feature Summary

• Snubberless operation capability for simplified circuit design
• Alternistor technology for high reliability
• Surface-mount TO-251 package for automated assembly

Triacs Applications

• Lighting control systems
• Motor speed control applications
• General purpose AC power switching

Triacs Procurement Notes

Verify the specific suffix H4TP against official Littelfuse documentation to confirm pinout and thermal characteristics. Ensure the procurement channel provides valid RoHS compliance data. Cross-reference the manufacturer part number with authorized distributor catalogs to avoid counterfeit components. Confirm that the TO-251 package dimensions match the target PCB footprint requirements before finalizing orders.

Triacs Selection Notes

Select this component when snubberless performance is required for AC load control. The 6 A rating suits moderate power applications. Verify compatibility with existing gate drive circuits given the specified trigger parameters. Consider the TO-251 package constraints for thermal management and board space limitations compared to through-hole alternatives.

Triacs Part Context

This part belongs to the Littelfuse Alternistor family, designed for robust AC switching without external snubbers. It complements other triacs in the series by offering surface-mount convenience while maintaining high voltage blocking capabilities suitable for residential and industrial AC line applications.

Triacs Replacement Considerations

Direct substitutes may include other Littelfuse 400 V 6 A Alternistors in compatible packages. Verify equivalent electrical ratings and pin configurations before substitution.