2N4427 www.centralsemi.com SILICON DESCRIPTION: NPN RF TRANSISTOR The CENTRAL SEMICONDUCTOR 2N4427 is a silicon NPN epitaxial planar RF transistor mounted in a hermetically sealed package designed for high frequency amplifier applications. MARKING: FULL PART NUMBER TO-39 CASE MAXIMUM RATINGS: (T =25C unless otherwise noted) A SYMBOL UNITS Collector-Base Voltage V 40 V CBO Collector-Emitter Voltage V 20 V CEO Emitter-Base Voltage V 2.0 V EBO Continuous Collector Current I 400 mA C Continuous Base Current I 400 mA B Power Dissipation P 1.0 W D Power Dissipation (T=25C) P 3.5 W C D Operating and Storage Junction Temperature T , T -65 to +200 C J stg ELECTRICAL CHARACTERISTICS: (T =25C unless otherwise noted) A SYMBOL TEST CONDITIONS MIN MAX UNITS I V =40V, V=1.5V 100 A CEV CE BE I V =12V, V =1.5V, T=150C 5.0 mA CEV CE BE C I V=12V 20 A CEO CE I V=2.0V 100 A EBO EB BV I =5.0mA, R=10 40 V CER C BE BV I=5.0mA 20 V CEO C V I =100mA, I=20mA 0.5 V CE(SAT) C B h V =5.0V, I=100mA 10 200 FE CE C h V =5.0V, I=360mA 5.0 FE CE C f V =15V, I =50mA, f=200MHz 500 MHz T CE C C V =12V, I =0, f=1.0MHz 4.0 pF ob CB E G V =12V, P =100mW, f=175MHz 10 dB pe CC in V =12V, P =1.0W, f=175MHz 50 % CC out P V =12V, P =1.0W, f=175MHz 100 mW in CC out R1 (4-June 2013)2N4427 SILICON NPN RF TRANSISTOR TO-39 CASE - MECHANICAL OUTLINE LEAD CODE: 1) Emitter 2) Base 3) Collector MARKING: FULL PART NUMBER R1 (4-June 2013) www.centralsemi.com