Q8004L4TP

Triacs Overview

The Littelfuse Q8004L4TP is a bidirectional triac from the Teccor Qxx04xx series, designed for power control applications. It features an RMS on-state current (It RMS) of 4 A and a rated repetitive peak off-state voltage (VDRM) of 800 V. The device operates within a junction temperature range of -40°C to +125°C and utilizes a TO-252-3 surface-mount package. Key electrical parameters include a maximum holding current (Ih) of 30 mA, a gate trigger voltage (Vgt) of 2.5 V, and a gate trigger current (Igt) ranging from 25 mA to 50 mA. The on-state voltage is specified at 1.6 V, with non-repetitive peak on-state currents of 46 A and 55 A.

Triacs Feature Summary

• High voltage blocking capability suitable for demanding AC power switching environments
• Surface-mount TO-252-3 packaging optimized for automated PCB assembly processes
• Robust thermal performance supporting operation up to 125°C junction temperature

Triacs Applications

• Solid-state relay modules requiring high-voltage isolation
• Industrial motor speed control circuits
• Lighting dimmer systems for commercial fixtures

Triacs Procurement Notes

Verify component authenticity by cross-referencing the manufacturer's part number with official Littelfuse documentation. Ensure the ordering suffix matches the specific package variant required for your design. Confirm compliance with RoHS and REACH standards prior to integration into final assemblies.

Triacs Selection Notes

Select this component when an 800 V rating is necessary for AC line voltages exceeding standard 600 V thresholds. The 4 A RMS current capacity suits moderate-power loads. Evaluate the TO-252-3 footprint against available board space and ensure thermal management strategies accommodate the 1.6 V on-state voltage drop during conduction periods.

Triacs Part Context

This triac belongs to the Teccor Qxx04xx family, characterized by 4 A current ratings and high voltage capabilities. It complements other Littelfuse thyristors like the Q4008L4TP, which offers higher current but lower voltage ratings. The series provides standardized pinouts and electrical characteristics for consistent design implementation across various power control projects.

Triacs Replacement Considerations

Direct substitutes may include other 800 V, 4 A triacs in TO-252-3 packages from manufacturers such as STMicroelectronics or ON Semiconductor. Verify equivalent VDRM, It RMS, and gate trigger specifications before substitution.