,J 20 STERN AVE. SPRINGFIELD, NEW JERSEY 07081 U.S.A. TELEPHONE: (973) 376-2922 (212)227-6005 FAX: (973) 376-8960 BF240, BF241 NPN Silicon Epitaxial Planar Transistors designed for emitter-grounded AM and FM amplifier stages I* max. Q5 # Plastic case = JEDEC TO-92 TO-18 compatible The case is impervious to light Weight approximately 0.18 g Dimensions in mm Absolute Maximum Ratings Symbol Value Unit Collector Base Voltage VCBO 40 V Collector Emitter Voltage VCEO 40 V Emitter Base Voltage VEBO 4 V Collector Current lo 25 mA Base Current IB 2 mA Power Dissipation at Tamb = 25 °C P« 3001' mW Junction Temperature T] 150 CC Storage Temperature Range Ts -55 .. . +150 'C " Valid provided that leads are kept at ambient temperature at a distance ot 2 mm from case NJ Semi-Conductors reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by NJ Semi-Conductors is believed to be both accurate and reliable at the time of going to press. However, NJ Semi-Conductors assumes no responsibility for any errors or omissions discovered in its use. NJ Semi-Conductors encourages customers to verify that datasheets are current before placing orders. Quality Semi-Conductors BF240, BF241 Characteristics at Tamb = 25 °C Symbol Min. Typ. Max. Value hFE hFE 67 36 - 220 125 - Base Emitter Voltage at VCB = 1 0 V, lc = 1 mA VBE 650 700 740 mV Collector Cutoff Current at VCB = 20 V ICBO - - 100 nA Thermal Resistance Junction to Ambient RlhA - - 420" K/W Collector Base Breakdown Voltage at lc = 1 0 /uA V(BH)CBO 40 - - V Collector Emitter Breakdown Voltage at lc = 2 mA V(BR)CEO 40 - - V Emitter Base Breakdown Voltage at IE = 1 0 ^A V(BH)EBO 4 - - V Gain Bandwidth Product at VCB = 10V, lc = 1 mA, f= 100MHz fj - 430 400 -cre - 0.27 - PF at VCB = 10V, lc = 1 mA gs = 5 mS, t = 200 kHz ys = (6.6 - j 3.3) mS, f = 1 00 MHz F F - 1.5 1.6 3.5 dB dB Output Admittance at VCB = 10 V, lc = 1 mA, f = 10.7 MHz at VCB = 10 V, lc = 1 mA, f = 470 kHz g« g« - - 10.5 8.3 DC Current Gain at VCE - 1 0 V, lc = 1 mA Feedback Capacitance at VCB= 10 V, lc = 1 mA, f = 1 MHz BF240 BF241 BF240 BF241 fr _ MHz MHz Noise Figure (emitter grounded) 11 Valid provided that leads are kept at ambient temperature at a distance of 2 mm from case pS Ms