This part is a kind of semiconductor called BFR91.

Function of this product has NPN Silicon High-Frequency Transistor.

Manufacturers : PLANETA

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PLANETA The RF Line NPN Silicon High-Frequency Transistor DESCRIPTION The BFR91 is an NPN silicon epitaxial transistor designed for low noise amplifier at VHF, UHF and CATV band. It has dynamic range and good current characteristic. This small-signal plastic transistor offers superior quality and performance at low cost. FEATURES Ø High Gain-Bandwidth Products fT=5.0 GHz (Typ) @ 30 mA Ø Low Noise Figure NF=1.9 dB (Typ) @ 500 MHz Ø High Gain GPS= 18.0 dB (Typ) @ 500 MHz BFR91 1 3 1 – Base 2 – Collector 3 – Emitter 2 JEDEC EIAJ GOST Weight: SOT37 TO-50 – KT-29 0.2g ABSOLUTE MAXIMUM RATINGS (TA = 25 °C) Rating Symbol Collector- Emitter Voltage Collector- Base Voltage Emitter- Base Voltage Collector Current Power Dissipation Junction Temperature Operating Junction Tempera [ ... ]

BFR91 PDF Datasheet Download