This part is a kind of semiconductor called BF245B.

Function of this product has N-channel silicon field-effect transistors.

Manufacturers : NXP

Image and pinout :

Some of the text within the PDF file :

DISCRETE SEMICONDUCTORS DATA SHEET BF245A; BF245B; BF245C N-channel silicon field-effect transistors Product specification Supersedes data of April 1995 File under Discrete Semiconductors, SC07 1996 Jul 30 Philips Semiconductors Product specification N-channel silicon field-effect transistors FEATURES • Interchangeability of drain and source connections • Frequencies up to 700 MHz. APPLICATIONS • LF, HF and DC amplifiers. DESCRIPTION General purpose N-channel symmetrical 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 transport or handling. QUICK REFERENCE DATA SYMBOL VDS VGSoff VGSO IDSS PARAMETER drain-source voltage gate-sou [ ... ]

BF245B PDF Datasheet Download