This part is a kind of semiconductor called BF246A.
Function of this product has N-channel silicon junction field-effect transistors.
Manufacturers : NXP
Image and pinout :

Some of the text within the PDF file :
DISCRETE SEMICONDUCTORS DATA SHEET BF246A; BF246B; BF246C; BF247A; BF247B; BF247C N-channel silicon junction field-effect transistors Product specification Supersedes data of April 1995 File under Discrete Semiconductors, SC07 1996 Jul 29 Philips Semiconductors Product specification N-channel silicon junction field-effect transistors FEATURES • Interchangeability of drain and source connections • High IDSS range • Frequency up to 450 MHz. APPLICATIONS • VHF and UHF amplifiers • Mixers • General purpose switching. DESCRIPTION General purpose N-channel symmetrical silicon junction field-effect transistors in a plastic TO-92 variant package. CAUTION The device is supplied in an antistatic package. The gate-source input must be protected against static discharge during tran [ ... ]
BF246A PDF Datasheet Download
