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BF991 Datasheet(PDF) 2 Page - NXP Semiconductors |
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BF991 Datasheet(HTML) 2 Page - NXP Semiconductors |
2 / 5 page April 1991 2 Philips Semiconductors Product specification N-channel dual-gate MOS-FET BF991 FEATURES • Protected against excessive input voltage surges by integrated back-to-back diodes between gates and source. APPLICATIONS • VHF applications such as: – VHF television tuners and FM tuners – Professional communication equipment. PINNING PIN SYMBOL DESCRIPTION 1 s, b source 2 d drain 3g2 gate 2 4g1 gate 1 Fig.1 Simplified outline (SOT143) and symbol. Marking code: M91. handbook, halfpage s,b d g 1 g 2 43 2 1 Top view MAM039 DESCRIPTION Depletion type field-effect transistor in a plastic SOT143 microminiature package with interconnected source and substrate. QUICK REFERENCE DATA SYMBOL PARAMETER CONDITIONS TYP. MAX. UNIT VDS drain-source voltage − 20 V ID drain current − 20 mA Ptot total power dissipation up to Tamb =60 °C − 200 mW Tj junction temperature − 150 °C transfer admittance f = 1 kHz; ID = 10 mA; VDS =10V; VG2-S =4V 14 − mS Cig1-s input capacitance at gate 1 f = 1 MHz; ID = 10 mA; VDS = 10 V; VG2-S = 4 V 2.1 − pF Crs feedback capacitance f = 1 MHz; ID = 10 mA; VDS = 10 V; VG2-S =4V 20 − fF F noise figure f = 200 MHz; GS = 2 mS; BS =BSopt; ID = 10 mA; VDS =10V; VG2-S =4V 12dB Y fs |
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