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IRL3803S

IRL3803S Description

The IRL3803S from Infineon Technologies is a N-channel HEXFET® power MOSFET designed for high-current, low-voltage applications. With a drain-to-source voltage (Vdss) of 30V and a continuous drain current (Id) of 140A (at Tc), this device is optimized for efficiency in power switching circuits. It features an ultra-low on-resistance (Rds(on)) of just 6mΩ at 10V gate drive, minimizing conduction losses and improving thermal performance. The MOSFET is housed in a D2PAK (TO-263) surface-mount package, offering robust thermal dissipation and mechanical stability.

IRL3803S Features

• Low Rds(on): 6mΩ @ 71A, 10V ensures minimal power loss in high-current applications.
• High Current Handling: 140A continuous drain current (at Tc) supports demanding power stages.
• Fast Switching: Gate charge (Qg) of 140nC @ 4.5V and input capacitance (Ciss) of 5000pF @ 25V enable efficient high-frequency operation.
• Wide Gate Drive Range: Vgs(max) of ±16V and threshold voltage (Vgs(th)) of 1V @ 250µA provide flexibility in drive circuitry.
• Thermal Performance: 200W power dissipation (at Tc) and D2PAK package ensure reliable operation under high thermal stress.
• Obsolete Status: While no longer in production, it remains a proven choice for legacy designs.

IRL3803S Applications

• DC-DC Converters: Ideal for synchronous buck/boost converters due to low Rds(on) and high current capability.
• Motor Control: Suitable for H-bridge motor drivers in robotics, automotive, and industrial systems.
• Power Management: Efficiently handles load switching in server PSUs, battery management systems (BMS), and UPS units.
• High-Current Switching: Used in welding equipment, inverters, and high-power LED drivers.

Conclusion of IRL3803S

The IRL3803S is a high-performance N-channel MOSFET offering exceptional current handling, low conduction losses, and robust thermal characteristics. While marked as obsolete, its HEXFET® technology and D2PAK packaging make it a reliable choice for legacy or cost-sensitive designs requiring high-efficiency power switching. Engineers in automotive, industrial, and power electronics sectors may still leverage its capabilities in high-current, low-voltage applications.