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The Sanken Electric USA Inc. 2SK2803 is a general-purpose N-channel power MOSFET designed for high-voltage switching applications. It features a drain-source voltage (VDSS) of 450 V and a continuous drain current (ID) of 3 A at 25°C case temperature. The device exhibits a maximum on-resistance (RDS(on)) of 2.8 Ω at VGS = 10V and ID = 1.5A, with a typical gate threshold voltage (VTH) of 2.0 V to 4.0 V. Key electrical parameters include a pulsed drain current of 12 A, an avalanche energy rating (EAS) of 30 mJ, and a maximum power dissipation of 30 W at 25°C case temperature. The component operates within a junction temperature range up to 150°C.
Verify the specific package variant required, as the datasheet distinguishes between FM20 (TO-220F) and FM100 (TO-3PF) mechanical dimensions. Confirm that the procurement specification aligns with the 'General product' designation rather than the UL approved version if safety certification is not required. Ensure the design accounts for the 'Not Recommended for New Designs' status when planning long-term production lifecycles.
Select this component for applications requiring 450 V blocking capability with moderate current handling up to 3 A. Consider the thermal resistance constraints given the 30 W power dissipation limit at 25°C case temperature. Evaluate the 2.8 Ω maximum RDS(on) against efficiency requirements, as higher resistance may result in significant conduction losses compared to modern low-RDS(on) alternatives. Verify compatibility with the available TO-220F or TO-3PF mounting styles.
The 2SK2803 belongs to Sanken Electric's portfolio of discrete power semiconductors, specifically categorized as a general-purpose N-channel MOSFET. It is engineered for robust performance in industrial and consumer power electronics where high voltage isolation is critical. The device utilizes silicon gate technology to provide reliable switching characteristics across a wide operating temperature range.
Public confirmed substitute part numbers are not provided in the source material.