This part is a kind of semiconductor called BF245.

Function of this product has N-Channel Amplifiers.

Manufacturers : Fairchild Semiconductor

Image and pinout :

Some of the text within the PDF file :

BF245A/BF245B/BF245C BF245A/BF245B/BF245C N-Channel Amplifiers • This device is designed for VHF/UHF amplifiers. • Sourced from process 50. 1 TO-92 1. Gate 2. Source 3. Drain Absolute Maximum Ratings Ta=25°C unless otherwise noted Symbol VDG VGS IGF PD TJ, TSTG Parameter Drain-Gate Voltage Gate-Source Voltage Forward Gate Current Total Device Dissipation @TA=25°C Derate above 25°C Operating and Storage Junction Temperature Range Value 30 -30 10 350 2.8 - 55 ~ 150 Units V V mA mW mW/°C °C Electrical Characteristics Ta=25°C unless otherwise noted Symbol Parameter Test Condition VDS = 0, IG = 1µA VDS = 15V, ID = 200µA Min. -30 -0.4 -1.6 -3.2 -0.5 -2.2 -3.8 -7.5 -8 -5 Max. Units V V Off Characteristics V(BR)GSS Gate-Source Breakdown Voltage VGS Gate-Source BF245A BF245B BF245 [ ... ]

BF245 PDF Datasheet Download