2N4427 NPN SILICON HIGH FREQUENCY TRANSISTOR PACKAGE STYLE TO-39 DESCRIPTION: The ASI 2N4427 is a High Frequency Transistor Designed for Amplifier and Oscillator Applications. MAXIMUM RATINGS 400 mA IC VCE 20 V PDISS 3.5 W @ TC = 25 °C TJ -65 °C to +200 °C TSTG -65 °C to +200 °C θJC 50 °C/W 1 = EMITTER 2 = BASE 3 = COLLECTOR NONE CHARACTERISTICS TC = 25 °C SYMBOL TEST CONDITIONS BVCEO IC = 50 mA BVCER IC = 5.0 mA BVEBO IC = 100 µA ICEX VCE = 40 V IEBO VEB = 20 V hFE VCE = 5.0 V IC = 100 mA IC = 380 mA VCE(SAT) IC = 100 mA IB = 20 mA ft VCE = 15 V IC = 50 mA COB VCB = 12 V f = 1.0 MHz Pin η VCC = 12 V Pout = 1.0 W f = 175 MHz RBE = 10 Ω MINIMUM TYPICAL UNITS 20 V 40 V 3.5 V VBE = -1.5 V 10 5.0 f = 200 MHz MAXIMUM 0.1 mA 0.1 mA 200 --- 0.5 V MHz 500 35 A D V A N C E D S E M I C O N D U C T O R, I N C. 7525 ETHEL AVENUE • NORTH HOLLYWOOD, CA 91605 • (818) 982-1202 • FAX (818) 765-3004 Specifications are subject to change without notice. 4.0 pF 75 mW % REV. A 1/1