Q4004F32

Triacs Overview

The Littelfuse Q4004F32 is a bidirectional triac designed for AC power control applications. It features a TO-220AB package with three leads for through-hole mounting. The device has a maximum repetitive peak off-state voltage of 400V and an RMS on-state current rating of 4A. Key electrical parameters include a maximum gate trigger current of 10mA, a maximum gate trigger voltage of 1.3V, and a peak on-state voltage of 1.6V. The surge current rating is 55A, with a holding current of 20mA. It operates within a temperature range of -40°C to 125°C.

Triacs Feature Summary

• Bidirectional switching capability for AC circuits
• High surge current handling capacity
• Robust thermal performance in TO-220 package

Triacs Applications

• AC motor speed control
• Lighting dimmer circuits
• Solid state relays

Triacs Procurement Notes

Verify the specific suffix 'F32' against official Littelfuse documentation to confirm exact pinout, lead finish, or packaging variations. Ensure the component matches the required voltage and current ratings for the target circuit design before procurement.

Triacs Selection Notes

Select this component when a 4A RMS current rating and 400V blocking voltage are required for AC load switching. Consider the TO-220 package for adequate heat dissipation without additional heatsinking in moderate duty cycles. Verify gate sensitivity requirements match the driving circuit capabilities.

Triacs Part Context

This part belongs to the Littelfuse TRIAC family, specifically engineered for general-purpose AC power control. It complements other thyristor devices by offering reliable switching for resistive and inductive loads in consumer and industrial electronics.

Triacs Replacement Considerations

Check for direct equivalents from manufacturers like STMicroelectronics or Vishay with matching 4A/400V ratings and TO-220 packages. Verify pin compatibility and thermal characteristics before substitution.