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| 2N4428 NPN SILICON HIGH FREQUENCY TRANSISTOR PACKAGE STYLE TO-39 DESCRIPTION: The 2N4428 is a High Frequency Transistor Designed for Amplifier and Oscillator Applications. MAXIMUM RATINGS IC VCE PDISS TJ TSTG JC O O 425 mA 30 V 3.5 W @ TC = 25 C -65 C to +200 C -65 C to +200 C 50 C/W O O O O 1 = EMITTER 2 = BASE 3 = COLLECTOR NONE CHARACTERISTICS SYMBOL BVCEO BVCER BVEBO ICEX hFE ft COB Pin IC = 20 mA IC = 20 mA TC = 25 C O TEST CONDITIONS RBE = 10 VBE = -1.5 V IC = 50 mA IC = 400 mA IC = 50 mA f = 200 MHz f = 1.0 MHz Rs = 50 f = 200 MHz MINIMUM 35 55 3.5 TYPICAL MAXIMUM UNITS V V V IC = 100 A VCE = 55 V VCE = 5.0 V VCE = 20 V VCB = 28 V VCC = 28 V Pout = 750 mW 1.0 20 5.0 700 1000 1.5 3.5 75 35 200 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. 7525 ETHEL AVENUE * NORTH HOLLYWOOD, CA 91605 * (818) 982-1202 * FAX (818) 765-3004 Specifications are subject to change without notice. REV. A 1/1 |
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