Q4004V4TP

Triacs Overview

The Littelfuse Q4004V4TP is a bidirectional triac from the Teccor Qxx04xx series, designed for AC power control applications. It features a rated repetitive off-state voltage (VDRM) of 400 V and an on-state RMS current (IT(RMS)) of 4 A. The device operates within a temperature range of -40°C to +125°C and utilizes a TO-251-3 (DPAK) surface-mount package. Key electrical characteristics include a maximum holding current of 30 mA, a gate trigger voltage of 2.5 V, and a gate trigger current ranging from 25 mA to 50 mA. It exhibits an on-state voltage of 1.6 V and a non-repetitive peak on-state current capability of 46 A or 55 A depending on pulse duration.

Triacs Feature Summary

• Surface-mount TO-251-3 package optimized for automated PCB assembly
• Bidirectional switching capability for AC load control circuits
• High thermal stability supporting operation up to +125°C junction temperature

Triacs Applications

• Solid-state relay (SSR) output stages
• AC motor speed control systems
• Lighting dimmer circuits

Triacs Procurement Notes

Verify the specific suffix 'TP' against the manufacturer's official datasheet to confirm tape-and-reel packaging specifications and quantity per reel. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the Littelfuse part number with authorized distributors to confirm current availability and lead times before finalizing procurement plans.

Triacs Selection Notes

Select this component when a 400 V blocking voltage and 4 A continuous current rating are required in a compact surface-mount form factor. Compare the 2.5 V gate trigger voltage against your microcontroller or driver output levels to ensure reliable triggering. Verify that the TO-251-3 thermal resistance is sufficient for your application's heat dissipation needs without excessive heatsinking.

Triacs Part Context

This triac belongs to the Littelfuse Teccor Qxx04xx family, which provides standardized AC switching solutions. The Q4004V4TP shares functional similarities with other members of the series but is distinguished by its 400 V voltage rating and 4 A current capacity. It serves as a direct replacement for legacy through-hole triacs in modern high-density PCB designs requiring robust AC control.

Triacs Replacement Considerations

Check for equivalent parts from manufacturers like STMicroelectronics or ON Semiconductor offering similar 400V/4A ratings in DPAK packages. Ensure pinout compatibility and thermal performance match the original design constraints before substituting.