140 COMMERCE DRIVE MONTGOMERYVILLE, PA 18936-1013 PHONE: (215) 631-9840 FAX: (215) 631-9855 MS1251 RF & MICROWAVE TRANSISTORS VHF MOBILE APPLICATIONS Features • • • • • • • 175 MHz 12.5 VOLTS POUT = 45 WATTS GP = 6.5 dB MINIMUM INPUT MATCHED COMMON EMITTER CONFIGURATION VSWR = 20:1 DESCRIPTION: The MS1251 is an epitaxial silicon NPN planar transistor designed primarily for 12.5 V, Class C VHF communications. This device utilizes diffused emitter resistors to achieve 20:1 VSWR capability at rated operating conditions. ABSOLUTE MAXIMUM RATINGS (Tcase = 25°° C) Symbol Value Unit VCBO Collector - Base Voltage 36 V VCEO Collector - Emitter Voltage 18 V VCES Collector - Emitter Voltage 36 V VEBO Emitter - Base Voltage 4.0 V Device Current 6.0 A Power Dissipation 145 W TJ Junction Temperature +200 °C T STG Storage Temperature -65 to +150 °C 1.2 ° C/W IC PDISS Parameter Thermal Thermal Data RTH(J-C) Junction-Case Thermal Resistance 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. MS1251 ELECTRICAL SPECIFICATIONS (Tcase = 25° 25° C) STATIC Symbol Value Test Conditions Min. Typ. Max. Unit BVCBO IC = 50 mA IE = 0 mA 36 --- --- V BVCES IC = 50 mA VBE = 0 V 36 --- --- V BVCEO IC = 50 mA IB = 0 mA 18 --- --- V BVEBO IE = 10 mA IC = 0 mA 4.0 --- --- V ICES VCE = 15 V IE = 0 mA --- --- 5 mA HFE VCE = 5 V IC = 5 A 20 --- 200 --- DYNAMIC Symbol Value Test Conditions Min. Typ. Max. Unit POUT f = 138 - 175 MHz PIN = 10 W VCE = 12.5 V 45 --- --- W GP f = 138 - 175 MHz PIN = 10 W VCE = 12.5 V 6.5 --- --- dB ηC f = 138 - 175 MHz PIN = 10 W VCE = 12.5 V 50 --- --- % COB f =1 MHz VCB = 12.5 V --- --- 135 pF IMPEDANCE DATA FREQ 175 MHz PIN = 10 W VCE = 12.5 V ZIN(Ω) ZCL(Ω) 1.38 + j0.44 1.70 + j0.48 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. MS1251 TYPICAL TYPICAL PERFORMANCE 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. MS1251 TYPICAL TYPICAL PERFORMANCE (CONTINUED (CONTINUED)) 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. MS1251 TEST CIRCUIT 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. MS1251 PACKAGE MECHANICAL DATA 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.