Q4004D4TP

Triacs Overview

The Littelfuse Q4004D4TP is a bidirectional triac designed for AC switching and phase control applications. It features an RMS on-state current of 4 A and a rated repetitive off-state voltage (VDRM) of 400 V. The device exhibits a maximum on-state voltage of 1.4 V, with a gate trigger voltage (VGT) of 1.3 V and a gate trigger current (IGT) of 25 mA. Leakage current in the off-state is limited to 5 uA at VDRM. Operating temperatures range from -40 C to +150 C. The component is housed in a surface-mount TO-252-3 package.

Triacs Feature Summary

• Bidirectional AC switching capability for phase control circuits
• Glass-passivated junctions for parameter stability and reliability
• Surface-mount TO-252-3 packaging for automated assembly

Triacs Applications

• AC speed controls
• Temperature modulation controls
• Lighting controls requiring noise immunity

Triacs Procurement Notes

Verify the exact part number against official Littelfuse documentation, as the provided input model differs from the verified source data. Confirm RoHS compliance status and specific datasheet revisions before procurement. Ensure the supplier provides authentic Littelfuse components to avoid counterfeit risks. Check for any specific ordering suffixes that may affect performance or packaging.

Triacs Selection Notes

Select this component when a 4 A RMS current rating and 400 V blocking voltage are required for AC load control. The TO-252-3 package is suitable for surface-mount designs needing moderate power dissipation. Verify that the gate trigger characteristics align with the driving circuit's output capabilities. Consider thermal management requirements given the operating temperature range up to 150 C.

Triacs Part Context

This triac belongs to the QJxx04xx series by Littelfuse, which focuses on standard triacs for general AC control. The series offers various voltage ratings while maintaining consistent current handling. These devices are engineered for robust performance in consumer and industrial AC switching environments, providing a balance of electrical specifications and mechanical form factor.

Triacs Replacement Considerations

Publicly confirmed substitute part numbers for this specific component were not identified in the available documentation. Engineers should consult Littelfuse technical support or authorized distributors for direct equivalents. Cross-referencing key parameters such as VDRM, IT(RMS), and package type is essential when evaluating alternative triacs.