This part is a kind of semiconductor called 22N055.

Function of this product has N-CHANNEL POWER MOSFET.

Manufacturers : Renesas

Image and pinout :

Some of the text within the PDF file :

DATA SHEET MOS FIELD EFFECT TRANSISTOR NP22N055HHE, NP22N055IHE, NP22N055SHE SWITCHING N-CHANNEL POWER MOSFET DESCRIPTION These products are N-channel MOS Field Effect Transistors designed for high current switching applications. FEATURES • Channel temperature 175 degree rated • Super low on-state resistance RDS(on)1 = 39 mΩ MAX. (VGS = 10 V, ID = 11 A) • Low Ciss : Ciss = 590 pF TYP. • Built-in gate protection diode ORDERING INFORMATION PART NUMBER PACKAGE NP22N055HHE NP22N055IHE Note TO-251 (JEITA) / MP-3 TO-252 (JEITA) / MP-3Z NP22N055SHE TO-252 (JEDEC) / MP-3ZK Note Not for new design. (TO-251) ABSOLUTE MAXIMUM RATINGS (TA = 25°C) Drain to Source Voltage VDSS 55 Gate to Source Voltage VGSS ±20 Drain Current (DC) Drain Current (Pulse) Note1 ID(DC) ID(pulse [ ... ]

22N055 PDF Datasheet Download