bf1101 r wr.pdf datasheet:

DISCRETE SEMICONDUCTORS DATA SHEETBF1101; BF1101R; BF1101WRN-channel dual-gate MOS-FETsProduct specification 1999 May 14Supersedes data of 1999 Feb 01NXP Semiconductors Product specificationBF1101; BF1101R;N-channel dual-gate MOS-FETsBF1101WRFEATURES PINNING Short channel transistor with high PIN DESCRIPTIONhandbook, 2 columns 43forward transfer admittance to input 1 sourcecapacitance ratio2 drain Low noise gain controlled amplifier 3 gate 2up to 1 GHz2 14 gate 1 Partly internal self-biasing circuit to Top view MSB035ensure good cross-modulation performance during AGC and good DC stabilization. BF1101R marking code: NCp.Fig.2 Simplified outline APPLICATIONS(SOT143R). VHF and UHF applications with 3 to 7 V supply voltage, such as television tuners and professional communications equipment.handbook, 2