, Una. TELEPHONE: (973) 376-2922 (212)227-6005 FAX: (973) 376-8960 20 STERN AVE. SPRINGFIELD, NEW JERSEY 07081 U.S.A. NPN SILICON HIGH FREQUENCY TRANSISTOR PACKAGE STYLE TO-39 1 2N4428 *a A 4>b «bi 4>0 »Dt h 1 k 1 I, 1: P Q MAXIMUM RATINGS 425mA Ic VCE 30V PDISS 3.5 W @ Tc = 25 °C a DIMENSIONS UILUMETERS INCHES WIN. MAX. WIN. MAX. 0190 0210 4.83 533 0240 0260 0.021 610 0.406 0406 889 800 0229 0.711 0.737 12.70 0016 0016 0019 0350 0370 0.335 0.125 0.034 0.040 0315 0.009 0028 0.029 0500 3.18 0.864 1.02 635 254 L -65 °C to +200 °C 45° NOMINAL 90' NOMINAL TSTG -65 °C to +200 °C 1 = EMITTER 2 = BASE 3 = COLLECTOR 50 °C/W 0JC 8.51 1 27 0050 0250 0 100 6.60 0.533 0.483 940 CHARACTERISTICS Tc = 25°c TEST CONDITIONS SYMBOL BVcEo lc = 20 mA BVCER lc = 20mA BVEBO l c =100|oA ICEX V C E =55V hFE VCE = 5.0 V R BE =10ii TYPICAL 55 V 3.5 V 1.0 700 f = 1 .0 MHz Vcc = 28 V f = 200 MHz Pout = 750 mW Rs = 50 Q t\E = 20 V lc = 50 mA f = 200 MHz UNITS V 20 5.0 lc = 50 mA lc = 400 mA VCB = 28 V MAXIMUM 35 VBE = -1.5V ft COB MINIMUM 200 1000 1.5 Pin 35 mA — MHz 3.5 PF 75 mW % NJ Semi-Conductors reserves the right to change test conditions, parameters 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