Page 1
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 tran sistor is specifically designed for
long pulse radar applications. It utilizes gold metalization and diffused emitter
ballasting to provide high reliability and supreme ruggedness.
ABSOLUTE MAXIMUM RATINGS
Maximum Power Dissipation @ 25 C 1167 Watts
Maximum Voltage and Current
BVces Collector to Emitter Voltage 60 Volts
BVebo Emitter to Base Voltage 4.0 Volts
Ic Collector Current 35 Amps
Ma ximum Temperatures
Storage Temperature - 65 to + 200 C
Operating Junction Temperature + 200 C
ELECTRICAL CHARACTERISTICS @ 25 C
SYMBOL CHARACTERISTICS TEST CONDITIONS MIN TYP MAX UNITS
Pout
Pin
Pg
η
c
VSWR
Power Out
Power Input
Power Gain
Collector Efficiency
Load Mismatch Tolerance
o
o
o
O
F = 450 MHz
Vcc = 40 Volts
Pulse Width = 60 µs
Duty = 2%
Rated Conditions
CASE OUTLINE
55JV, STYLE 2
500
8.5
535
70
60
5:1
Watts
Watts
d B
%
BVces
BVceo
BVebo
Hfe
Cob
θjc
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
Collector to Emitter Breakdown
Collector to Emitter Breakdown
Emitter to Base Breakdown
DC Current Gain
Output Capacitance
Thermal Resistance
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
60
0.15
Volts
Volts
o
C/W
Page 2
UDR-500
August 1996
Page 3
R1
L2
C11
L1
UDR-500
October 1997
R3
L6
L7
C13
l
l
5
7
C8
C15
50W
B1
R2
L4
1.105"
l
1
.3"
.59"
.585"
l
3
1.85"
C9
Q1
C1 C2
l
2
C3
C4
C5
l
4
C6
C10
C7
l
L3
6
l
8
L5
C12
C14
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
l
9
50W
B2
l
10
L8
C16
R3
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
Loading...