Q4N3RP

Triacs Overview

The Q4N3RP is a logic-sensitive gate TRIAC manufactured by Littelfuse Inc., designed for surface-mount applications in the DO-214 (Compak) package. It features a single-channel configuration with a rated repetitive off-state voltage of 400 V and a maximum RMS on-state current of 1 A. The device supports non-repetitive surge currents of 16.7 A at 50 Hz and 20 A at 60 Hz. Electrical triggering characteristics include a maximum gate trigger current (Igt) of 10 mA, a maximum gate trigger voltage (Vgt) of 1.3 V, and a maximum holding current (Ih) of 15 mA. It operates within a junction temperature range of -40°C to +125°C.

Triacs Feature Summary

• Logic-sensitive gate architecture enables direct interfacing with low-power control circuits such as microcontrollers or optocouplers without requiring high drive currents.
• Surface-mount DO-214 (Compak) packaging facilitates automated assembly and compact board layout for consumer and industrial electronics.
• Glass-passivated junctions ensure long-term parameter stability and reliability under varying thermal conditions.

Triacs Applications

• Solid-state relay inputs
• Lighting control systems
• Motor speed control circuits

Triacs Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm pinout and electrical tolerances, as suffixes may indicate variations in packaging or testing criteria. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the selected component matches the required voltage and current ratings for the target application circuit design.

Triacs Selection Notes

Select this component when a low-current TRIAC with logic-compatible gate sensitivity is required for AC switching. The 400 V rating suits general-purpose mains isolation applications. Verify that the 1 A RMS current capacity meets the load requirements. Consider the DO-214 package constraints for thermal management and PCB space availability compared to through-hole alternatives.

Triacs Part Context

The Q4N3RP belongs to the Q4N series of logic-level TRIACs from Littelfuse. This series is engineered for cost-effective AC power control in compact devices. The part shares functional similarities with other logic-gate TRIACs but is distinguished by its specific 400 V blocking voltage and 1 A current handling in a surface-mount form factor.

Triacs Replacement Considerations

Direct substitutes include parts from the same family such as Q4N3CT or Q4N3DKR, which share identical electrical specifications but differ in packaging format (cut tape vs. Digi-Reel). Cross-brand replacements require matching Igt, Vdrm, and It(RMS) parameters.