MS1281 RF & MICROWAVE TRANSISTORS FM BROADCAST APPLICATIONS Features • • • • • • 108 MHz 28 VOLTS GOLD METALLIZATION POUT = 150 WATTS GP = 9.2dB MINIMUM COMMON EMITTER CONFIGURATION DESCRIPTION: The MS1281 is a 28V silicon NPN planar transistor designed primarily for VHF FM broadcast transmitters. Diffused emitter ballast provide infinite VSWR capability under rated operating conditions. ABSOLUTE MAXIMUM RATINGS (Tcase = 25°° C) Symbol VCBO VCEO VCES VEBO IC PD Tj T STG Parameter Collector-Base Voltage Collector-Emitter Voltage Collector-Emitter Voltage Emitter-Base Voltage Device Current Power Dissipation Junction Temperature Storage Temperature Value Unit 60 25 60 4.0 16 230 200 -65 to +150 V V V V A W °C °C 0.75 ° C/W Thermal Data RTH(J-C) Thermal Resistance Junction-case MS1281.PDF 5-8-03 Advanced Power Technology reserves the right to change, without notice, the specifications and information contained herein Visit our website at WWW.ADVANCEDPOWER.COM or contact our factory direct. MS1281 ELECTRICAL SPECIFICATIONS (Tcase (Tcase = 25° 25° C) STATIC Symbol BVCBO BVCES BVCEO BVEBO hFE Test Conditions IC = 100 mA IC = 100 mA IC = 100 mA IE = 20 mA VCE = 5 V IE = 0 mA RBE = 10 Ω IB = 0 mA IC = 0 mA IC = 1 A Min. Value Typ. Max. Unit 60 55 25 4.0 20 ----------- --------150 V V V V --- Min. Value Typ. Max. Unit DYNAMIC Symbol Test Conditions POUT f = 108MHz PIN = 18W VCE = 28V 150 --- --- GP f = 108MHz PIN = 18W VCE = 28V 9.2 --- --- W dB η f = 108MHz PIN = 18W VCE = 28V 70 --- --- % f = 1 MHz VCB = 28V --- --- 150 pF COB IMPEDANCE DATA FREQ ZIN(Ω) ZCL(Ω) 88 MHz 1.0 - j0.2 3.6 + j2.4 100 MHz 0.7 + j0.0 3.9 + j3.0 108 MHz 1.0 - j0.5 4.4 + j1.2 POUT = 150 W VCC = 28 V MS1281.PDF 5-8-03 Advanced Power Technology reserves the right to change, without notice, the specifications and information contained herein Visit our website at WWW.ADVANCEDPOWER.COM or contact our factory direct. MS1281 PACKAGE MECHANICAL DATA MS1281.PDF 5-8-03 Advanced Power Technology reserves the right to change, without notice, the specifications and information contained herein Visit our website at WWW.ADVANCEDPOWER.COM or contact our factory direct.