This part is a kind of semiconductor called APM2509NUB.

Function of this product has N-Channel Enhancement Mode MOSFET.

Manufacturers : Anpec Electronics Coropration

Image and pinout :

Some of the text within the PDF file :

www.datasheet4u.com APM2509NUB N-Channel Enhancement Mode MOSFET Features • 25V/50A , RDS(ON)=7.5mΩ(typ.) @ VGS=10V RDS(ON)=13mΩ(typ.) @ VGS=4.5V Pin Description 1 2 3 • • • • Super High Dense Cell Design Avalanche Rated Reliable and Rugged Lead Free Available (RoHS Compliant) G D D S Applications • Power Management in Desktop Computer or DC/DC Converters Top View of TO-251 G S N-Channel MOSFET Ordering and Marking Information APM2509N Lead Free Code Handling Code Temp. Range Package Code Package Code UB : TO-251 Operating Junction Temp. Range C : -55 to 150 ° C Handling Code PB : Plastic Bag Lead Free Code L : Lead Free Device Blank : Original Device XXXXX - Date Code APM2509N UB : APM2509N XXXXX Note: ANPEC lead-free products contain molding compounds/d [ ... ]

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