This part is a kind of semiconductor called AC1286.

Function of this product has Cascadable Amplifier.

Manufacturers : Cougar Components

Image and pinout :

Some of the text within the PDF file :

2/99 AC1286 Typical Values 650 TO 1200 MHz TO-8 CASCADABLE AMPLIFIER AC1286 1.0 dB 31.0 dB Ultra Low Noise Figure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . High Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . High Performance Thin Film Standard Size TO-8 AC1286 TO-8 Package for Amplifiers 0.450 (11.43) DIA. 0.208 (5.28) MAX. 0.025 (0.64) SPECIFICATIONS* Parameter Frequency (Min.) Small Signal Gain (Min.) Gain Flatness (Max.) Noise Figure (Max.) SWR (Max.) Input Output 0.185 ± 0.015 (4.70 ± 0.38) 0.018 ± 0.002 DIA. PIN (0.46 ± 0.05) (4) PLCS 0.504 (12.80) DIA. 50 OHM INPUT GROUND 50 OHM OUTPUT Typical 600-1300 MHz 31.0 dB ±0.4 dB 1.0 dB 1.6:1 1.7:1 Guaranteed 0 to 50° C -55 to +85° C 650-1200 MHz 28.0 dB ±0.6 dB 1.3 dB 1.8: [ ... ]

AC1286 PDF Datasheet Download