QJ4008DH3TP

Triacs Overview

The Littelfuse QJ4008DH3TP is a bidirectional triac in the QJxx08xH series, housed in a surface-mount TO-252-3 (D-PAK) package. It supports an RMS on-state current of 8 A and a rated repetitive off-state voltage of 400 V. Key electrical parameters include a maximum off-state leakage current of 10 uA at VDRM, an on-state voltage of 1.5 V, and gate trigger requirements of 1.3 V and 10 mA. The device operates within a temperature range of -40 C to +150 C.

Triacs Feature Summary

• Bidirectional AC switching capability for phase control applications
• Glass-passivated junctions for parameter stability and reliability
• Surface-mount D-PAK packaging for automated assembly

Triacs Applications

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

Triacs Procurement Notes

Verify the specific suffix DH3TP against official Littelfuse documentation to confirm the exact package variant and compliance status. Ensure the procurement channel provides valid traceability for RoHS and REACH SVHC declarations. Cross-reference the manufacturer part number with authorized distributor listings to confirm authenticity and avoid counterfeit components.

Triacs Selection Notes

Select this component when a surface-mount triac with 8 A capacity and 400 V rating is required. The TO-252-3 package suits PCB designs needing compact thermal management. Verify that the 1.3 V gate trigger voltage aligns with the driving circuit's output capabilities. Confirm that the 400 V rating meets the peak voltage requirements of the target AC load application.

Triacs Part Context

This device belongs to the QJxx08xH series of Teccor brand triacs manufactured by Littelfuse. These devices are designed as integrated bidirectional switches, often eliminating the need for discrete diac triggers in certain configurations. The series focuses on providing reliable AC switching solutions with glass-passivated junction technology for enhanced durability in industrial and consumer electronics.

Triacs Replacement Considerations

Check for other variants within the QJxx08xH family, such as those with different voltage ratings or package types like the TO-251-3. Verify pinout compatibility before substituting with similar triacs from other manufacturers. Ensure any replacement maintains the same RMS current and voltage specifications.