UDR-500 500 Watts - 40 Volts, Pulsed Radar 400 - 450 MHz GENERAL DESCRIPTION The UDR-500 is an internally matched, COMMON EMITTER transistor capable of providing 500 Watts of pulsed RF output power at sixty microseconds pulse width, two percent duty factor across the band 400-450 MHz. This hermetically solder sealed transistor is specifically designed for long pulse radar applications. It utilizes gold metalization and diffused emitter ballasting to provide high reliability and supreme ruggedness. CASE OUTLINE 55JV, STYLE 2 ABSOLUTE MAXIMUM RATINGS Maximum Power Dissipation @ 25oC Maximum Voltage and Current BVces Collector to Emitter Voltage BVebo Emitter to Base Voltage Ic Collector Current Maximum Temperatures Storage Temperature Operating Junction Temperature 1167 Watts 60 Volts 4.0 Volts 35 Amps - 65 to + 200 oC + 200 oC ELECTRICAL CHARACTERISTICS @ 25 OC SYMBOL CHARACTERISTICS TEST CONDITIONS MIN TYP Pout Pin Pg ηc VSWR Power Out Power Input Power Gain Collector Efficiency Load Mismatch Tolerance F = 450 MHz Vcc = 40 Volts Pulse Width = 60 µs Duty = 2% Rated Conditions 500 535 Ic = 50 mA Ic = 30 mA Ie = 20 mA Vce =5 V, Ic =1A Vcb = 40V, F =1 MHz Rated Pulse Condition 70 30 4.0 20 BVces BVceo BVebo Hfe Cob θjc Collector to Emitter Breakdown Collector to Emitter Breakdown Emitter to Base Breakdown DC Current Gain Output Capacitance Thermal Resistance MAX 70 8.5 60 UNITS Watts Watts dB % 5:1 Volts Volts 60 0.15 o C/W Initial Issue June, 1994 GHz TECHNOLOGY INC. RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE. GHz RECOMMENDS THAT BEFORE THE PRODUCT(S) DESCRIBED HEREIN ARE WRITTEN INTO SPECIFICATIONS, OR USED IN CRITICAL APPLICATIONS, THAT THE PERFORMANCE CHARACTERISTICS BE VERIFIED BY CONTACTING THE FACTORY. GHz Technology Inc. 3000 Oakmead Village Drive, Santa Clara, CA 95051-0808 Tel. 408 / 986-8031 Fax 408 / 986-8120 UDR-500 August 1996 UDR-500 October 1997 R3 L6 R1 L7 L1 C13 L2 l5 C11 C8 l1 l3 .3" 1.105" 50W C1 C2 C3 l9 C9 1.85" .585" .59" B1 50W Q1 C5 B2 C6 C10 C4 l4 l2 l10 C7 R2 L3 L4 C15 l7 l6 l8 L5 L8 C12 C14 R3 C16 PC BOARD MATERIAL 0.015" TEFLON FIBERGLASS B1, B2=Balun 50W semi-rigid coax 5.1" long l1, l2=25W, .149=.070"W x 2.76"L l3, l4=25W, .132=.070"W x 2.43"L l5, l6=7.3W, .038=.3"W x .6864"L l7, l8=2.7W, .045=.840"W x .8"L l9, l10=25W, .0162=0.70"W x .3"L C1=12pf, ATC "B" (100MIL) C2=6.2pf, ATC "B" (100MIL) C3=5.6pf, Dielectric Labs C4=20pf, ATC "B" (100MIL) C5,C6=.3-3.5pf, Johanson Piston Trimmer C7,C8=5.2pf, ATC "B" (100MIL) C9,C10=180pf, ATC "B" (100MIL) C11,C12,C13,C14=470pf, ATC "B" (100MIL) C15,C16=50mf, 50 WVDC Electrolytic R1,R2=15W, 1/2 watt R3,R4=15W, 1 watt L1,L3=1 1/2 turns #18 AWG on .250 I.D L2,L4=4 turns #16 AWG on Indiana General ferrite toroid #FG27-8 L5,L6=2 mil copper strap .6" x .0625" L7,L8=5 turns #16 AWG on Indiana General ferrite toroid #F624-19