MDS500L 500 Watts, 50 Volts, Pulsed Avionics 1030 - 1090 MHz GENERAL DESCRIPTION CASE OUTLINE 55ST Style 1 The MDS500L is a high power COMMON BASE bipolar transistor. It is designed for MODE-S ELM systems in the 1030 - 1090 MHz frequency band. The transistor includes input and output prematch for broadband performance. The device has gold thin-film metallization and diffused ballasting in a hermetically sealed package for proven highest MTTF. ABSOLUTE MAXIMUM RATINGS Maximum Power Dissipation 833 W Device Dissipation @25°C1 Maximum Voltage and Current Collector to Emitter Voltage (BVces) 70 V Emitter to Base Voltage (BVebo) 3.5 V Peak Collector Current (Ic) 24 A Maximum Temperatures Storage Temperature -65 to +150 °C Operating Junction Temperature +200 °C ELECTRICAL CHARACTERISTICS @ 25°°C SYMBOL CHARACTERISTICS Pout Pin Pg ηc VSWR Pd1 Trise1 Power Out Power Input Power Gain Collector Efficiency Load Mismatch Tolerance Pulse Droop Rise Time TEST CONDITIONS F = 1030, 1090 MHz Vcc = 50 Volts PW = Note 2 DF = Note 2 MIN TYP MAX 500 60 9.2 50 UNITS W W dB % 2:1 0.8 100 dB nSec 15 V V V mA 0.08 °C/W FUNCTIONAL CHARACTERISTICS @ 25°°C BVebo BVces BVcbo Ices hFE θjc1 Emitter to Base Breakdown Collector to Emitter Breakdown Collector to Base Breakdown Collector to Emitter Leakage DC – Current Gain Thermal Resistance Ie = 15 mA Ic = 50 mA Ic = 50 mA Vce = 50V Vce = 5V, Ic = 1.0 A 3.0 70 70 20 NOTE 1: AT RATED OUTPUT POWER AND PULSE CONDITIONS NOTE 2: ELM Burst: 32µSec ON/ 18µSec OFF x 48, repeated at 23mSec REV C – March 2008 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. MDS500L SAMPLE RF DATA (SN#7-23; WO#51157X) Pout vs Pin (ELM PULSE M OD; WO#51157X) 540 Pout(W) 440 1030MHz 340 1090MHz 240 140 40 0 10 20 30 40 50 60 70 80 90 Pin(W) Gain vs Pin (ELM PULSE M OD; WO#51157X) 10.50 Gain(dB) 9.50 1030MHz 8.50 1090MHz 7.50 6.50 0 10 20 30 40 50 60 70 80 90 Pin(W) Effic vs Pin (ELM PULSE M OD; WO#51157X) 70.0 Effic(%) 60.0 50.0 1030MHz 1090MHz 40.0 30.0 20.0 0 10 20 30 40 50 60 70 80 90 Pin(W) 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. IMPEDANCE DATA FREQUENCY 1030 1090 1150 Zsource (ohms) 1.90 – j1.60 2.10 – j1.61 2.26 – j1.82 Zsource Zload (ohms) 1.79 – j1.51 2.05 – j1.76 2.21 – j2.21 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. MDS500L 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.