Q4X4RP

Triacs Overview

The Littelfuse Q4X4RP is a bidirectional triac from the TECCOR Q_X series, designed for AC switching and phase control applications. It features an RMS on-state current of 800 mA and a rated repetitive peak off-state voltage of 400 V. The device operates within a junction temperature range of -40°C to +110°C and utilizes a Compak-3 surface-mount package. Key electrical parameters include a maximum holding current of 25 mA, a gate trigger voltage of 2.5 V, and a gate trigger current ranging from 25 mA to 50 mA. The on-state voltage is specified at 1.6 V, with non-repetitive peak on-state currents available in 8.3 A and 10 A variants.

Triacs Feature Summary

• Integrated glass-passivated junctions ensure long-term parameter stability and device reliability.
• Surface-mount Compak-3 packaging facilitates automated assembly and space-efficient circuit board design.
• Bidirectional switching capability allows for gate control regardless of main terminal voltage polarity.

Triacs Applications

• AC power switching circuits
• Lighting control systems
• Temperature modulation controls

Triacs Procurement Notes

Verify component authenticity by cross-referencing the manufacturer part number Q4X4RP with official Littelfuse documentation. Confirm that the received items match the specified TECCOR branding and RoHS compliance status. Ensure storage conditions adhere to semiconductor handling standards to prevent moisture sensitivity damage prior to soldering.

Triacs Selection Notes

Select this component when a low-current bidirectional switch is required for 400 V AC applications. The 800 mA RMS rating suits light loads such as small motors or heating elements. Verify that the gate drive circuit can supply the necessary 25 mA trigger current. Consider the thermal management requirements associated with the Compak-3 package for continuous operation.

Triacs Part Context

This triac belongs to the TECCOR Q_X series, which provides various current ratings for general-purpose AC control. The Q4X4RP specifically addresses applications needing compact surface-mount solutions with moderate current handling capabilities. It complements higher-current variants like the Q4008NH4RP for designs requiring scalable power control architectures.

Triacs Replacement Considerations

Direct substitutes must match the 400 V blocking voltage, 800 mA RMS current, and Compak-3 package dimensions. Verify equivalent gate trigger characteristics to ensure reliable commutation in existing driver circuits without redesigning the control logic.