10 Pcs SUM45N2558E3 SUM45N2558 SUM45N25 TO263 Overview A pack of ten Nchannel power MOSFETs in TO263 surfacemount package, offered in the SUM45N25 family and available with suffix options. These devices are designed for mediumvoltage switching and power management tasks where compact PCB mounting and reliable current handling are required. Key benefits and why you need this product Direct replacement and compatibility: Compatible with circuits specifying SUM45N2558E3, SUM45N2558, or SUM45N25 in a TO263 footprint, simplifying repairs and upgrades. Space efficient and PCB friendly: TO263 package enables surfacemount assembly for smaller boards compared to through hole power devices. power handling: Intended for applications that need a 45 V voltage rating and substantial continuous current capability, enabling effective switching and conduction in power converters and motor drives. Improves thermal performance on board: TO263 package offers a heatsinking tab and large pad area to assist heat transfer when mounted with proper PCB layout and external heatsinking. Features and attributes Function: Nchannel enhancement mode power MOSFET for switching applications. Models included: SUM45N2558E3, SUM45N2558, SUM45N25. Package: TO263 surfacemount package, suitable for reflow soldering and automated assembly. Electrical class: 45 V voltage rating and 25 A class current handling as identified by the model designation. Quantity: 10 pieces per set for small production runs, prototyping, or maintenance spares. Practical advantages Reduces assembly complexity by supporting standard surfacemount manufacturing flows. Provides a compact, replaceable power switch option for designs that require a robust MOSFET in a lowprofile package. Allows designers to manage boardlevel thermal design using the package tab and copper plane for heat spreading. Typical applications and use scenarios DCDC converters and buck regulators: Use as the main switching element in midvoltage converters for industrial control, telecom power supplies, or batterypowered systems. Motor control and drivers: Suitable for Hbridge and lowvoltage motor driver stages for small DC motors in robotics, automation, or consumer appliances. Power management and battery protection: Implement as part of power distribution circuits, load switching, or battery charge controllers where a compact, current MOSFET is required. Installation and handling tips Mount on a PCB designed for TO263 footprints with adequate copper pour and thermal vias if to dissipate heat. Follow recommended reflow soldering profiles for surfacemount devices to ensure reliable solder joints. Verify gate drive voltage and switching conditions in your circuit to match the MOSFETs electrical limits. What is included Ten MOSFETs of the SUM45N25 family in TO263 package, matching the listed model variations. Compatibility Intended for replacement or use in designs calling for SUM45N2558E3, SUM45N2558, or SUM45N25 TO263 MOSFETs. Confirm electrical and thermal requirements in your design before installation. This product provides a practical, PCBfriendly power switching solution for engineers and technicians working on mediumvoltage, current electronic designs.