140 COMMERCE DRIVE MONTGOMERYVILLE, PA 18936-1013 PHONE: (215) 631-9840 FAX: (215) 631-9855 MS2554 RF & MICROWAVE TRANSISTORS AVIONICS APPLICATIONS Features * * * * * * 1025 - 1150 MHz 50 VOLTS INPUT/OUTPUT MATCHING POUT = 250 WATTS GP = 6.2 dB MINIMUM COMMON BASE CONFIGURATION DESCRIPTION: The MS2554 is a NPN bipolar transistor specifically designed for high peak pulse power applications such as DME/TACAN. This device is capable of withstanding a minimum 20:1 load VSWR at any phase angle under full rated conditions. Internal impedance matching provides consistent broadband performance. ABSOLUTE MAXIMUM RATINGS (Tcase = 25C) Symbol PDISS IC VCC TJ T STG Parameter Power Dissipation Device Current Collector-Supply Voltage* Junction Temperature Storage Temperature Value Unit 600 17.8 55 200 -65 to +200 W A V C C 0.20 C/W Thermal Data RTH(J-C) Thermal Resistance Junction-case MSCXXXX.PDF 01-19-99 MS2554 ELECTRICAL SPECIFICATIONS (Tcase = 25C) STATIC Symbol BVCBO BVEBO BVCER ICES HFE Test Conditions IC = 15 mA IE = 1 mA IC = 50 mA VCE = 50 V VCE = 5 V IE = 0 mA IC = 0 mA RBE = 10 IC = 1 A Min. Value Typ. Max. Unit 65 3.5 65 --15 ----------- ------25 120 V V V mA --- DYNAMIC Symbol Test Conditions Min. Value Typ. Max. Unit POUT f = 1025 - 1150 MHz PIN = 90 W VCC = 50 V 250 --- --- W C f = 1025 - 1150 MHz PIN = 90 W VCC = 50 V 40 --- --- % GP Condition s f = 1025 - 1150 MHz PIN = 90 W VCC = 50 V 6.2 --- --- dB Pulse Width = 10uS Duty Cycle = 1% IMPEDANCE DATA FREQ ZIN () ZCL () 1025 MHz 4.2 + j6.7 2.0 - j7.5 1090 MHz 4.0 + j3.5 2.5 - j7.5 1150 MHz 2.3 + j2.3 2.5 - j8.5 VCC = 50V PIN = 60W MSCXXXX.PDF 01-19-99 MS2554 PACKAGE MECHANICAL DATA MSCXXXX.PDF 01-19-99