This part is a kind of semiconductor called K105.

Function of this product has 2SK105.

Manufacturers : InterFET

Image and pinout :

Some of the text within the PDF file :

D-2 01/99 Japanese Equivalent JFET Types Silicon Junction Field-Effect Transistors Japanese InterFET Process Parameters Conditions Unit Limit 2SK17 IFN17 NJ16 N Channel 2SK40 IFN40 NJ16 N Channel 2SK59 IFN59 NJ16 N Channel 2SK105 IFN105 NJ16 N Channel BVGSS IGSS VGS(off) IDSS gfs Ciss Crss IG = – 1.0 µA VGS = ( ), VDS = Ø VDS = ( ), ID = 1.0 nA VDS = ( ), VGS = Ø VDS = ( ), VGS = Ø VGS = ( ), VDS = ( ) VGS = ( ), VDS = ( ) V Min nA Max V Min/Max mA Min/Max mS Typ pF Typ pF Typ – 20 0.10 (–10 V) – 0.5/– 6.0 (10 V) 0.3/6.5 (10 V) 2.0 (10 V) 4.0 (Ø) (Ø) 1.2 (– 10 V) (Ø) TO-226AA SGD – 50 1.0 (– 30 V) – 0.4/– 5.0 (15 V) 0.6/6.5 (15 V) 2.0 (15 V) 4.0 (Ø) (15 V) 1.2 (Ø) (15 V) TO-226AA SGD – 30 1.0 (–10 V) – 0.4/– 5.0 (10 V) [ ... ]

K105 PDF Datasheet Download