L0109NTRP4

Triacs Overview

The L0109NTRP4 is a low-power TRIAC manufactured by Littelfuse Inc., designed for solid-state switching applications. It features an 800 V rated repetitive off-state voltage and a 1 A on-state current capability. The device operates within a temperature range of -40°C to +125°C and is housed in a surface-mount SOT-223-4 package. Key electrical specifications include an off-state leakage current of 5 µA at VDRM. This component serves as a direct interface solution for microprocessor drivers, offering economical integration in compact electronic designs requiring bidirectional control.

Triacs Feature Summary

• Bi-directional solid-state switching capability for AC load control
• Direct interface compatibility with microprocessor driver circuits
• Surface-mount SOT-223-4 packaging for automated assembly

Triacs Applications

• Motor control applications
• Microprocessor-driven AC load switching
• Low power TRIAC implementations up to 1200V series systems

Triacs Procurement Notes

Verify component authenticity through authorized distributors, as the L0109NTRP4 is listed as obsolete and no longer manufactured by Littelfuse Inc. Confirm that substitute parts, such as the L0109NTRP, meet all original electrical and mechanical specifications before integration. Ensure RoHS compliance status matches project requirements when sourcing available inventory from third-party suppliers.

Triacs Selection Notes

Select this component for applications requiring a compact, low-power TRIAC with direct microprocessor interfacing. The SOT-223-4 package suits space-constrained PCB layouts. Consider the 800 V rating for appropriate voltage headroom. Since the part is obsolete, evaluate the availability of direct substitutes like the L0109NTRP to ensure supply chain continuity without redesigning the circuit board.

Triacs Part Context

The L0109NTRP4 belongs to Littelfuse’s Low Power TRIAC series, which offers bi-directional solid-state switching in economical packages. This series includes TO-92 and surface-mount options designed for direct microprocessor driver interfaces. The component supports reliable operation in industrial and consumer electronics where compact size and efficient control are prioritized over high-current handling capabilities.

Triacs Replacement Considerations

The L0109NTRP is identified as a direct substitute for the L0109NTRP4. Verify pinout compatibility and electrical parameter equivalence before replacement. As the original part is obsolete, confirm that the substitute maintains the same SOT-223-4 package dimensions and thermal characteristics to ensure seamless integration into existing designs.