Small Signal RF Transistors TO-39 & TO-72 Cases TO-39 TYPE NO. DESCRIPTION VCBO VCEO VEBO (V) (V) (V) ICBO @ VCB (A) (V) hFE *TYP TO-72 @ IC @ VCE VCE (SAT ) @ IC fT Cob (mA) (V) (V) (mA) (MHz) (pF) NF CASE (dB) *TYP *TYP MIN MIN MIN MIN MAX MAX MIN MAX MAX BFX89 NPN RF AMPL/SWITCH 30 15 2.5 0.01 15 20 150 2.0 1.0 -- -- 1200 1.7 4.0 TO-72 BFY90 NPN RF AMPL/SWITCH 30 15 2.5 0.01 15 25 150 2.0 1.0 -- -- 1400 1.5 3.5 TO-72 CM4957 PNP RF AMPL/SWITCH 30 25 3.0 0.1 10 20 150 2.0 10 -- -- 1200 2.0 -- TO-72 CM5160 PNP RF AMPL/SWITCH 60 40 4.0 1.0 28 10 -- 50 5.0 -- -- 500 4.0 -- TO-39 CM5583 PNP RF AMPL/SWITCH 30 30 3.0 0.05 20 25 100 100 2.0 0.8 100 1300 5.0 -- TO-39 CM5943 NPN RF AMPL/SWITCH 40 30 3.5 10 15 25 300 50 15 0.2 100 1200 2.5 8.0 TO-39 (30-March 2006) w w w. c e n t r a l s e m i . c o m