This part is a kind of semiconductor called BB809.

Function of this product has VHF variable capacitance diode.

Manufacturers : Philipss

Image and pinout :

Some of the text within the PDF file :

DISCRETE SEMICONDUCTORS DATA SHEET alfpage M3D050 BB809 VHF variable capacitance diode Product specification Supersedes data of April 1992 File under Discrete Semiconductors, SC01 1996 May 03 Philips Semiconductors Product specification VHF variable capacitance diode FEATURES • High linearity • Matched to 3% • Hermetically sealed leaded glass SOD68 (DO-34) package • C28: 4.7 pF; ratio: 9 • Low series resistance. Cathode side indicated by a yellow band on a black body. k handbook, halfpage a BB809 MAM159 APPLICATIONS • Electronic tuning in VHF television tuners, band A up to 160 MHz • VCO. DESCRIPTION The BB809 is a variable capacitance diode, fabricated in planar technology, and encapsulated in the hermetically sealed leaded glass SOD68 (DO-34) package. ELECTRICAL [ ... ]

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