Infineon BSC105N10LSFG 100V OptiMOS Power MOSFET: Performance and Application Analysis

The Infineon BSC105N10LSFG is a member of the OptiMOS power MOSFET family, designed to deliver exceptional efficiency and reliability in a wide range of power conversion applications. As electronic systems demand higher power density and better thermal performance, this 100V N-channel MOSFET stands out by offering an optimal balance between low on-state resistance and high switching speed.

Constructed using advanced trench technology, the BSC105N10LSFG boasts an ultra-low typical RDS(on) of just 1.05 mΩ at 10 V gate voltage. This remarkably low resistance directly translates into reduced conduction losses, making it highly effective in minimizing heat generation and improving overall system efficiency. The device is housed in a SuperSO8 package, which offers an excellent power-to-size ratio, critical for space-constrained applications like server power supplies, telecom bricks, and high-frequency DC-DC converters.

A key strength of this MOSFET lies in its superior switching characteristics. The low gate charge (Qg) and output capacitance (Coss) ensure fast turn-on and turn-off transitions, which are crucial for high-frequency operation. This allows power supply designers to push switching frequencies higher, thereby reducing the size of passive components like inductors and capacitors. Moreover, the device features robust avalanche ruggedness and a high maximum continuous drain current (Id) of 180 A, providing a significant margin of safety in demanding conditions.

The BSC105N10LSFG is particularly suited for synchronous rectification in switched-mode power supplies (SMPS), where its low RDS(on) directly enhances efficiency. It is also an excellent choice for motor control circuits, battery management systems, and high-current OR-ing applications in redundant power architectures. Its performance ensures reduced energy loss, which is paramount for meeting modern energy efficiency standards such as 80 PLUS Titanium.

ICGOODFIND: The Infineon BSC105N10LSFG OptiMOS MOSFET sets a high benchmark with its industry-leading low on-resistance and excellent switching performance, making it an ideal component for high-efficiency, high-power-density designs across automotive, industrial, and computing applications.

Keywords:

Power Efficiency

Low RDS(on)

Synchronous Rectification

SuperSO8 Package

Switching Performance