Q4035NH5RP

Triacs Overview

The Littelfuse Q4035NH5RP is a high-power Alternistor TRIAC designed for surface-mount applications. It features a 400V repetitive peak off-state voltage and an RMS on-state current rating of 35A. The device utilizes a sensitive gate structure with a maximum gate trigger current of 50mA, facilitating direct drive from logic circuits. Housed in the SMTO-263-2 package, it supports operation across a junction temperature range of -40°C to +125°C. Key electrical parameters include a 1.8V on-state voltage, 10µA leakage current at VDRM, and non-repetitive surge currents rated between 208A and 250A.

Triacs Feature Summary

• Sensitive gate architecture enabling reliable triggering from low-power control interfaces
• High thermal stability and robust construction suitable for demanding power switching environments
• Surface-mount design optimized for automated assembly and compact PCB layouts

Triacs Applications

• Industrial motor control systems requiring high current handling
• Solid-state relays for AC load switching
• General-purpose AC power regulation circuits

Triacs Procurement Notes

Verify component authenticity through authorized Littelfuse distributors or certified suppliers. Request official datasheets and material compliance certificates to confirm RoHS and REACH status. Inspect packaging integrity upon receipt to prevent moisture damage, as specified in the manufacturer's storage guidelines. Ensure ordering suffixes match exact specifications.

Triacs Selection Notes

Select this component when a 35A RMS current capacity and 400V blocking voltage are required in a surface-mount form factor. The sensitive gate characteristic simplifies driver circuit design compared to standard gate TRIACs. Evaluate thermal management requirements based on the SMTO-263-2 package dissipation capabilities and the specific ambient operating conditions of the target application.

Triacs Part Context

This part belongs to the Littelfuse Qxx35xHx series of Alternistor TRIACs. These devices are engineered for high-current AC switching applications where reliability and compact sizing are critical. The series offers various voltage ratings while maintaining consistent current handling and package compatibility within the product line.

Triacs Replacement Considerations

Direct pin-compatible replacements may include other 35A, 400V SMD TRIACs from Littelfuse or competitors, provided gate sensitivity and thermal characteristics align. Verify that substitute components meet the same SMTO-263-2 footprint and electrical limits before integration.