MOTOROLA SC {XSTRS/R Fi Gb DE Beseresu 082624 4 tt 6367254 MOTOROLA SC (XSTRS/R F) S6D 82624 D a Te 3-2 BF256,A,B,C CASE 29-04, STYLE 23 TO-92 (TO-226AA) <> 2 Source . MAXIMUM RATINGS t Rating Symbol Value Unit 3 : Drain-Source Voltage Vps +30 Vde Drain Drain-Gate Voltage VDG 30 Vde 1 Gate Gate-Source Voltage VGs 30 Vdc Drain Current Ip 100 mAdc JFET Forward Gate Current lait) 10 mAde VHF/UHF AMPLIFIER Total Device Dissipation @ Ta = 25C Pp 360 mw Derate above 25C 2.88 mWw/ec N-CHANNEL DEPLETION Storage Channel Temperature Range Tstg 65 to +150 Refer to 2N4416 for graphs. ELECTRICAL CHARACTERISTICS (Ta = 25C unless otherwise noted.) | Characteristic [ Symbol [| Min | Typ | Max [ Unit OFF GHARACTERISTICS Gate-Source Breakdown Voltage V(BR)}GSS 30 _ _ Vde (Ig = 1.0 pAde, Vos = 0} Gate-Source Voltage VGSloff) 0.5 _ 7.5 Vde {Vps = 15 Vdc, Ip = 200 yA) Gate Reverse Current igss _ _ 5 nAdc (Vgs = 20 Vdc, Vps = 0) ON CHARACTERISTICS Zero-Gate Voltage Drain Current) ipss mAdc (Vps = 15 Vde, Ves = 0} BF256(1) 3 _ 18 BF256A 3 _ 7 BF256B 6 _ 13 BF256C 11 _ 18 SMALL-SIGNAL CHARACTERISTICS Forward Transfer Admittance fs 4.6 5 _ mmhos (Vps = 15 Vdc, Ves = 0, f = 1 kHz) i Reverse Transfer Capacitance Crss _ 0.7 _ pF : (Vps = 20 Vdc, -VGs = 1Vdc, f = 1 MHz) Output Capacitance Coss _ 1.0 _> pF (Vps = 20 Vdc, Vas = 0, f = 1 MHz) - Noise Figure NF _ 7.5 _ db (Vps = 10 Vdc, Rs = 479, f = 800 MHz) Cut-off Frequency(2} fgts _ 1000 _ MHz {Vps = 15 Vde, V6s = 0} Power Gain Gp _ 11 _ dB (Vpg = 15 Vde, Rg = 47 2, f =800 MHz} (1) On orders against the BF256, any or all subgroups might be shipped. (2) The frequency at which gfs is 0.7 of its value at 1 kHz. MOTOROLA SMALL-SIGNAL SEMICONDUCTORS 6-96