Q4004F31

Triacs Overview

The Littelfuse Q4004F31 is a sensitive gate triac rated for 4 A RMS on-state current and 400 V repetitive peak reverse voltage. Housed in an electrically isolated TO-220 package, it supports through-hole mounting with three pins. The device guarantees four-quadrant gating control, enabling operation with digital circuitry using positive or negative pulses. Key electrical parameters include a maximum gate trigger current of 10 mA, a maximum gate trigger voltage of 1.3 V, and a surge current rating of 55 A. It operates within a temperature range of -40°C to 125°C, featuring glass-passivated junctions for parameter stability.

Triacs Feature Summary

• Four-quadrant gating capability ensures reliable control by digital circuitry requiring positive-only or negative-only pulses.
• Electrically isolated TO-220 package eliminates the need for external insulators and separate mounting steps.
• Glass-passivated junctions provide long-term device reliability and stable electrical parameters.

Triacs Applications

• AC switching and phase control applications
• Speed controls for motors and fans
• Temperature modulation controls
• Lighting controls requiring noise immunity

Triacs Procurement Notes

Verify the specific suffix 'F31' against official Littelfuse documentation to confirm pinout configuration and isolation specifications. Ensure the selected component matches the required 400V voltage rating and 4A current capacity for the target circuit design before procurement.

Triacs Selection Notes

Select this component when four-quadrant sensitivity is required for digital logic interfacing. The electrically isolated TO-220 package is suitable for designs needing galvanic isolation between the gate drive and the heat sink without additional insulation hardware. Verify thermal management requirements for the 4A RMS load.

Triacs Part Context

This part belongs to the Teccor line of sensitive gate triacs, which includes devices with current capabilities up to 8 A. The series features voltage ranges from 200 V to 600 V and is designed for applications where standard triacs may lack sufficient gate sensitivity for direct digital control.

Triacs Replacement Considerations

Compatible replacements within the same family include Q4004L3TP, which shares similar electrical ratings and package type. Verify that any substitute maintains the four-quadrant gating specification and TO-220 isolation requirements.

Triacs FAQ

Does the Q4004F31 support four-quadrant gating?

Yes, the device guarantees gate control in Quadrants I, II, III, and IV, allowing control by digital circuitry with positive-only or negative-only pulses.

What is the isolation rating of the TO-220 package?

The TO-220 package is electrically isolated to 2500 V rms from the leads to the mounting surface.

What is the maximum gate trigger current (Igt)?

The maximum gate trigger current is specified as 10 mA.