Q4X3RP

Triacs Overview

The Littelfuse Q4X3RP is a bidirectional triac belonging to the TECCOR Compak-3 series, designed for surface-mount applications. It features a rated repetitive off-state voltage (VDRM) of 400 V and an RMS on-state current (It RMS) of 800 mA. The device exhibits a maximum holding current of 25 mA and a gate trigger current ranging from 25 mA to 50 mA. With a gate trigger voltage of 2.5 V and an on-state voltage of 1.6 V, it supports non-repetitive peak currents of 8.3 A or 10 A. Operating within a temperature range of -40°C to +110°C, it ensures reliable performance in compact electronic circuits requiring robust power control.

Triacs Feature Summary

• Surface-mount design utilizing the compact Compak-3 package for optimized board space utilization.
• Bidirectional switching capability suitable for AC power control applications.
• High thermal stability with an extended operating temperature range up to 110°C.

Triacs Applications

• Solid-state relays
• Lighting dimmers
• Motor speed controls

Triacs Procurement Notes

Verify the specific suffix configuration against the official Littelfuse datasheet to ensure compatibility with required electrical parameters. Confirm that the ordering quantity aligns with the manufacturer's standard reel packaging requirements. Cross-reference the component marking with the provided ECAD model data to prevent assembly errors during production.

Triacs Selection Notes

Select this component when a 400 V blocking voltage and 800 mA continuous current rating are required in a small footprint. Ensure the gate drive circuit can supply the specified 25 mA to 50 mA trigger current reliably. Evaluate the thermal management strategy to maintain junction temperatures within the specified -40°C to +110°C operational limits under load conditions.

Triacs Part Context

The Q4X3RP is part of the Littelfuse TECCOR Q_X family, which specializes in high-density thyristor solutions. This series is engineered for modern electronics where space constraints are critical. The Compak-3 package provides a standardized form factor that facilitates automated placement and improves manufacturing efficiency compared to traditional leaded packages.

Triacs Replacement Considerations

Consult the Littelfuse replacement guide for direct equivalents. Verify pinout compatibility and thermal characteristics before substituting with components from other manufacturers. Ensure any alternative part meets the same 400 V and 800 mA specifications.