PMDPB42UN,115

Overview

The PMDPB42UN is a dual N-channel enhancement mode Field-Effect Transistor utilizing Trench MOSFET technology. It is housed in an ultra-thin DFN2020-6 (SOT1118) leadless package measuring 2 x 2 x 0.65 mm with an exposed drain pad for thermal conduction. Key electrical parameters include a drain-source voltage of 20 V and a gate-source voltage of ±8 V. The device supports a continuous drain current of 3.9 A at 25 °C, rising to 5.1 A for short pulses. The typical on-state resistance is 40 mΩ at VGS = 4.5 V and ID = 3.9 A. Total gate charge is typically 23.5 nC.

Feature Summary

• Dual N-channel configuration within a compact, leadless surface-mount package
• Trench MOSFET technology enabling very fast switching speeds
• Exposed drain pad designed for excellent thermal conduction

Applications

• Charging switch for portable devices
• DC-to-DC converters
• Small brushless DC motor drive
• Power management in battery-driven portables
• Hard disc and computing power management

Procurement Notes

Verify the component origin carefully as the standard product business was transferred to Nexperia. Confirm that the datasheet references align with the specific manufacturing batch requirements. Ensure the ordering suffix matches the exact package variant needed for the design. Cross-check the marking code against the official documentation to prevent counterfeit risks during assembly.

Selection Notes

Select this component when space constraints require an ultra-thin footprint under 1 mm height. The dual configuration allows for cost-effective implementation of bridge or half-bridge topologies. Verify that the 20 V rating provides sufficient margin for the target application's supply voltage. Consider the thermal performance of the PCB layout due to the exposed pad requirement for optimal heat dissipation.

Part Context

This device belongs to the family of small-signal power transistors designed for high-density electronics. It utilizes advanced trench technology to minimize on-resistance while maintaining low gate charge. The SOT1118 package is optimized for automated surface-mount assembly processes common in consumer electronics manufacturing.

Replacement Considerations

Check for direct pin-compatible alternatives from the same manufacturer series. Verify that any substitute maintains the identical 20 V rating and comparable RDS(on) values. Ensure the replacement package dimensions match the existing PCB footprint to avoid mechanical interference.