2N4428 Overview
Key Specifications
Max Operating Temp: 200 °C
Description
The 2N4428 is a High Frequency Transistor Designed for Amplifier and Oscillator Applications. IC 425 mA VCE PDISS TJ TSTG θJC 30 V 3.5 W @ TC = 25 OC -65 OC to +200 OC -65 OC to +200 OC 50 OC/W 1 = EMITTER 2 = BASE 3 = COLLECTOR NONE CHARACTERISTICS TC = 25 OC SYMBOL TEST CONDITIONS BVCEO IC = 20 mA BVCER IC = 20 mA RBE = 10 Ω BVEBO IC = 100 µA ICEX VCE = 55 V VBE = -1.5 V hFE VCE = 5.0 V IC = 50 mA IC = 400 mA MINIMUM 35 55 3.5 20 5.0 ft VCE = 20 V IC = 50 mA f = 200 MHz 700 COB VCB = 28 V f = 1.0 MHz Pin VCC = 28 V f = 200 MHz η Pout = 750 mW Rs = 50 Ω 35 TYPICAL MAXIMUM 1.0 200 1000 1.5 3.5 75 UNITS V V V mA --- MHz pF mW % A D V A N C E D S E M I C O N D U C T O R, I N C.
