Q4008L455

Triacs Overview

The Littelfuse Q4008L455 is a standard TRIAC rated for 400 V repetitive off-state voltage and 8 A RMS on-state current. It utilizes a TO-220-2 through-hole package with an isolated tab. The device supports a maximum operating temperature of +125 C and a minimum of -40 C. Key electrical characteristics include a gate trigger voltage of 1.3 V and a non-repetitive surge current rating of 83 A or 100 A depending on pulse duration.

Triacs Feature Summary

• Standard TRIAC configuration for AC power control applications
• Through-hole mounting with isolated tab for heat dissipation
• High thermal stability across extended industrial temperature ranges

Triacs Applications

• Industrial motor speed control systems
• Solid state relay switching circuits
• General purpose AC power regulation

Triacs Procurement Notes

Verify component authenticity via manufacturer datasheets and authorized distributor channels. Confirm package integrity and lead formation prior to assembly. Cross-reference specifications against official Littelfuse documentation to ensure compliance with design requirements.

Triacs Selection Notes

Select this component for applications requiring robust AC switching at moderate currents. Ensure circuit design accommodates the specified gate trigger parameters. Verify thermal management strategies align with the TO-220 package capabilities and ambient operating conditions.

Triacs Part Context

This part belongs to the broader category of thyristors manufactured by Littelfuse. It serves as a discrete semiconductor solution for controlling alternating current in various electronic systems, distinct from integrated circuits or other passive components.

Triacs Replacement Considerations

Q4008L4TP and Q4008NH4RP are related variants within the same series offering similar electrical ratings but different packaging options.