This part is a kind of semiconductor called D2201.

Function of this product has METAL GATE RF SILICON FET.

Manufacturers : Seme LAB

Image and pinout :

Some of the text within the PDF file :

TetraFET D2201UK METAL GATE RF SILICON FET MECHANICAL DATA C N (typ) B 3 D (2 pls) 2 1 A F (2 pls) H J GOLD METALLISED MULTI-PURPOSE SILICON DMOS RF FET 2.5W – 12.5V – 1GHz SINGLE ENDED FEATURES • SIMPLIFIED AMPLIFIER DESIGN M I E K G • SUITABLE FOR BROAD BAND APPLICATIONS • LOW Crss • SIMPLE BIAS CIRCUITS DP PIN 1 PIN 3 SOURCE GATE PIN 2 DRAIN DIM mm A 16.51 B 6.35 C 45° D 3.30 E 18.92 F 1.52 G 2.16 H 14.22 I 1.52 J 6.35 K 0.13 M 5.08 N 1.27 x 45° Tol. 0.25 0.13 5° 0.13 0.08 0.13 0.13 0.08 0.13 0.13 0.03 0.51 0.13 Inches 0.650 0.250 45° 0.130 0.745 0.060 0.085 0.560 0.060 0.250 0.005 0.200 0.050 x 45° Tol. 0.010 0.005 5° 0.005 0.003 0.005 0.005 0.003 0.005 0.005 0.001 0.020 0.005 • LOW NOISE • HIGH GAIN – 10 dB MINIMUM APPLICATIONS • VHF/UHF COMM [ ... ]

D2201 PDF Datasheet Download