This part is a kind of semiconductor called 2N3820.

Function of this product has P-Channel General Purpose Amplifier.

Manufacturers : Fairchild Semiconductor

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Some of the text within the PDF file :

2N3820 2N3820 P-Channel General Purpose Amplifier • This device is designed primarily for low level audio and general purpose applications with high impedance signal sources. • Sourced from process 89. 1 TO-92 1. Drain 2. Gate 3. Source Epitaxial Silicon Transistor Absolute Maximum Ratings* TC=25°C unless otherwise noted Symbol VDG VGS IGF TSTG Parameter Drain-Gate Voltage Gate-Source Voltage Forward Gate Current Storage Temperature Range Ratings -20 20 10 -55 ~ 150 Units V V mA °C * This ratings are limiting values above which the serviceability of any semiconductor device may be impaired. NOTES: 1) These rating are based on a maximum junction temperature of 150 degrees C. 2) These are steady limits. The factory should be consulted on applications involving pulsed or low duty [ ... ]

2N3820 PDF Datasheet Download