SD1444 SILICON NPN RF POWER TRANSISTOR DESCRIPTION: The ASI SD1444 is designed for large signal power amplifier applications operating in the 250-512 MHz range. FEATURES: PACKAGE STYLE TO-39 • Common Emitter • POUT = 4.0 Watts • 12.5 Volts MAXIMUM RATINGS: IC 0.4 A VCB 36 V VCE 16 V PDISS 5.0 W @ TC = 25 °C TJ -65 °C to +200 °C TSTG -65 °C to +200 °C θJC 35.0 °C/W CHARACTERISTICS SYMBOL 1 = EMITTER 2 = BASE 3 = COLLECTOR TRANS1.SYM TC = 25 °C TEST CONDITIONS MINIMUM TYPICAL MAXIMUM UNITS BVCEO IC = 50 mA 16 V BVCES IC = 50 mA 36 V BVEBO IC = 1.0 mA 4.0 V ICBO VCE = 15 V HFE VCE = 5.0 V COB VCB = 15.0 V GPE VCE = 12.5 V IC = 50 mA 20 f = 1.0 MHz POUT = 2.0 W f = 470 MHz 8.0 15 1.0 mA 200 --- 15 pF dB IMPEDANCE DATA FREQ 470 MHz POUT = 2.0 W VCC = 12.5 V ZIN(Ω) 2.9 + j0.6 ZCL(Ω) 15.6 – j10.2 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. - 1/1