This part is a kind of semiconductor called 2SK1931.

Function of this product has VR Series Power MOSFET(200V 5A).

Manufacturers : Shindengen Electric Mfg.Co.Ltd

Image and pinout :

Some of the text within the PDF file :

SHINDENGEN VR Series Power MOSFET N-Channel Enhancement type 2SK1931 ( F5E20 ) 200V 5A FEATURES •œ Applicable to 4V drive. •œ The static Rds(on) is small. •œ Built-in ZD for Gate Protection. APPLICATION •œ DC/DC converters •œ Power supplies of DC 12-24V input •œ Product related to Integrated Service Digital Network OUTLINE DIMENSIONS Case : E-pack (Unit : mm) RATINGS •œAbsolute Maximum Ratings • Tc i = 25•Ž•j Item Symbol Storage Temperature Tstg Channel Temperature Tch Drain-Source Voltage VDSS Gate-Source Voltage VGSS Continuous Drain Current• DC•j i ID Continuous Drain Current• Peak) i IDP Continuous Source Current• DC•j i IS Total Power Dissipation PT Conditions Ratings -55•`150 150 200 •}30 5 10 5 20 Unit •Ž V A W Copyright & Copy;2000 [ ... ]

2SK1931 PDF Datasheet Download