FDC5661N

The FDC5661N is a high-performance N-channel MOSFET manufactured by onsemi, designed for efficient power switching applications. It features a low RDS(on) of 2.7 mΩ at VGS = 10 V, enabling minimal conduction losses and high energy efficiency in power conversion systems. The device has a maximum drain-source voltage (VDS) rating of 60 V, making it suitable for medium-voltage applications such as DC-DC converters, motor drives, and battery management systems. This MOSFET is optimized for fast switching speeds with a gate charge (Qg) of just 49 nC, reducing switching losses and improving overall system efficiency. Its robust construction supports continuous drain current (ID) up to 38 A at 25°C junction temperature, ensuring reliable operation under demanding load conditions. The FDC5661N also offers excellent thermal performance due to its TO-220 package, which allows efficient heat dissipation in compact designs. Key features include a negative temperature coefficient of RDS(on), which enhances current sharing in parallel configurations, and an integrated body diode that provides freewheeling capability in inductive load circuits. The device is fully characterized for safe operation under transient conditions, including short-circuit protection and avalanche energy tolerance, making it ideal for rugged environments. Common applications include automotive power systems, industrial power supplies, consumer electronics, and renewable energy inverters. In automotive contexts, it supports 12 V and 24 V electrical systems for power distribution, lighting, and electric power steering. In industrial settings, it enables high-efficiency buck and boost converters for precise voltage regulation. For consumer devices like smartphones and laptops, the FDC5661N contributes to compact, low-power power delivery solutions. The FDC5661N is designed for ease of integration into modern PCB layouts, with compatibility for surface-mount and through-hole mounting options. Its low gate threshold voltage (Vth) of 1.2 V ensures compatibility with low-voltage control ICs, while the high gate-source voltage rating (±20 V) provides robustness against ESD and transient spikes. This combination of performance, reliability, and design flexibility makes the FDC5661N a versatile choice for engineers seeking efficient, scalable power solutions across multiple industries.