Fairchild (onsemi)

FDV303N

FDV303N Description

The FDV303N from Fairchild (onsemi) is an N-Channel Digital MOSFET designed for small-signal switching applications. Built with silicon (Si) technology, it features a single-channel enhancement-mode configuration, offering efficient performance in compact designs. With a drain-source breakdown voltage (Vds) of 25V and continuous drain current (Id) of 680mA, this MOSFET is optimized for low-power, high-speed switching. Its low gate charge (Qg) of 2.3nC and fast switching times (rise/fall time: 8.5ns) make it ideal for high-frequency applications. The SMD/SMT package (2.9mm x 1.3mm x 1.2mm) ensures space-saving integration, while RoHS compliance meets environmental standards.

FDV303N Features

• Low Rds(on): 450mΩ drain-source resistance minimizes conduction losses.
• Fast Switching: 3ns turn-on delay and 17ns turn-off delay enhance efficiency in high-speed circuits.
• Compact Design: Ultra-small SC-70 package (1.2mm height) suits space-constrained PCBs.
• Wide Operating Range: Supports -55°C to +150°C, ensuring reliability in harsh environments.
• Low Threshold Voltage (Vgs th): 650mV enables compatibility with low-voltage logic (3.3V/5V).
• High Transconductance: 1.45S (min) ensures strong signal amplification.

FDV303N Applications

• Portable Electronics: Power management in smartphones, tablets, and wearables due to low power dissipation (350mW).
• Load Switching: Ideal for USB power switches, battery protection circuits.
• Signal Amplification: Used in audio amplifiers and sensor interfaces for low-noise performance.
• High-Speed Logic: Suitable for GPIO driving, level shifting in microcontrollers.
• Automotive Systems: ECUs, LED drivers benefiting from its wide temperature range.

Conclusion of FDV303N

The FDV303N stands out for its balance of speed, efficiency, and compactness, making it a top choice for digital and analog low-power designs. Its low gate charge, fast switching, and robust thermal performance outperform comparable MOSFETs in battery-operated and high-frequency systems. Engineers favor this model for reliable, space-efficient solutions in consumer, automotive, and industrial applications.