This part is a kind of semiconductor called BF244A.

Function of this product has N-Channel RF Amplifier.

Manufacturers : Fairchild Semiconductor

Image and pinout :

Some of the text within the PDF file :

BF244A / BF244B / BF244C BF244A BF244B BF244C S G TO-92 D N-Channel RF Amplifier This device is designed for RF amplifier and mixer applications operating up to 450 MHz, and for analog switching requiring low capacitance. Sourced from Process 50. Absolute Maximum Ratings* Symbol VDG VGS ID IGF Tstg Drain-Gate Voltage Gate-Source Voltage Drain Current Forward Gate Current Storage Temperature Range TA = 25°C unless otherwise noted Parameter Value 30 - 30 50 10 -55 to +150 Units V V mA mA °C *These ratings are limiting values above which the serviceability of any semiconductor device may be impaired. NOTES: 1) These ratings are based on a maximum junction temperature of 150 degrees C. 2) These are steady state limits. The factory should be consulted on applications involving puls [ ... ]

BF244A PDF Datasheet Download