RF1K4909396

Overview

The RF1K49093 is a discontinued N-channel power MOSFET manufactured by Fairchild Semiconductor, now under onsemi. It features an 8-SOIC surface-mount package with a maximum drain-source voltage of 30V and a continuous drain current of 6.3A at 25°C ambient temperature. The device exhibits a maximum on-resistance of 30mΩ at 10V gate drive and operates within a junction temperature range of -55°C to 150°C.

Feature Summary

• N-channel enhancement mode power MOSFET technology
• Surface-mount 8-SOIC package configuration
• Low on-resistance for efficient power switching

Applications

• DC-DC converter circuits
• Power management systems
• Load switching applications

Procurement Notes

This component is officially listed as discontinued by the manufacturer. Sourcing requires verification of availability through authorized distributors or secondary markets. Buyers must confirm the authenticity of the source and check for potential obsolescence notices. Alternative components should be evaluated for pin compatibility and electrical specifications before integration into new designs.

Selection Notes

Engineers selecting this part should verify that the 30V rating and 6.3A current capacity meet system requirements. The 8-SOIC package necessitates surface-mount assembly capabilities. Due to its discontinued status, design-in decisions should account for long-term supply chain stability and potential need for redesign using modern equivalents with similar thermal and electrical characteristics.

Part Context

Fairchild Semiconductor's discrete semiconductor portfolio included various power MOSFETs for general-purpose switching. The RF1K49093 belongs to the low-voltage category, designed for applications requiring moderate current handling in compact packages. Following the merger with onsemi, product lines were consolidated, leading to the discontinuation of many legacy part numbers while maintaining support for active devices.

Replacement Considerations

Verify cross-reference data from onsemi documentation for direct replacements. Ensure substitute parts match the 8-SOIC footprint and 30V/6.3A ratings. Check datasheets for equivalent Rds(on) and gate charge specifications to maintain circuit performance.