MDS70 70 Watts, 50 Volts, Pulsed Avionics 1030 - 1090MHz GENERAL DESCRIPTION CASE OUTLINE 55CX, STYLE 1 The MDS70 is a COMMON BASE bipolar transistor. It is designed for MODE S pulsed systems in the frequency band 1030-1090 MHz. The device has gold thin-film metallization for proven highest MTTF. The transistor includes input prematch for broadband capacity. Low thermal resistance package reduces junction temperature, extends life. ABSOLUTE MAXIMUM RATINGS Maximum Power Dissipation @ 25oC2 Maximum Voltage and Current BVces Collector to Base Voltage BVebo Emitter to Base Voltage Ic Collector Current Maximum Temperatures Storage Temperature Operating Junction Temperature 225 Watts 65 Volts 3.5 Volts 5.0 Amps - 65 to + 150oC + 200oC ELECTRICAL CHARACTERISTICS @ 25 OC SYMBOL CHARACTERISTICS TEST CONDITIONS Pout Power Out Pg Power Gain RT Rise Time F = 1030-1090 MHz Vcc = 50 Volts Pin = 6.5W ηc Collector Efficiency VSWR 1 Load Mismatch Tolerance BVebo Emitter to Base Breakdown BVces Collector to Emitter Breakdown DC - Current Gain hFE θjc 1 Thermal Resistance Notes: 1) At rated pulse conditions Rev B: October 2009 MIN 70 10.3 2 Pulse Mod: Mode S 1090 MHz Ie = 5 mA Ic = 25 mA Ic = 500 mA, Vce = 5 V TYP MAX 95 UNITS Watts 11.65 dB 80 ns 35 % 5:1 3.5 65 20 Volts Volts 0.8 o C/W 2) Mode S Burst: 0.5us (on/off), N=128, Per=6.4ms; LTDC=1% Microsemi reserves the right to change, without notice, the specifications and information contained herein. Visit our web site at www.microsemi.com or contact our factory direct. M DS70 (Pout vs Pin) 110 100 90 80 Pout(W) 70 60 50 40 30 20 10 0 0 1 2 3 4 5 6 7 8 9 10 Pin(W) 1030MHz (N=1) 1030MHz (N=128) 1090MHz (N=1) 1090MHz (N=128) M DS70 (Effic vs Pin) 45.0 40.0 35.0 Effic(%) 30.0 25.0 20.0 15.0 10.0 5.0 0.0 0 1 2 3 4 5 6 7 8 9 10 Pin(W) 1030MHz 1090MHz Microsemi reserves the right to change, without notice, the specifications and information contained herein. Visit our web site at www.microsemi.com or contact our factory direct. Microsemi reserves the right to change, without notice, the specifications and information contained herein. Visit our web site at www.microsemi.com or contact our factory direct. MDS70 IMPEDANCE DATA: FREQUENCY 1030 1090 Zsource (ohms) 3.0 – j4.8 2.8 – j4.5 Zsource Zload (ohms) 5.3 – j1.2 6.2 – j1.2 Zload Microsemi reserves the right to change, without notice, the specifications and information contained herein. Visit our web site at www.microsemi.com or contact our factory direct. Microsemi reserves the right to change, without notice, the specifications and information contained herein. Visit our web site at www.microsemi.com or contact our factory direct.