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Dimensions are shown in inches (millimeters).
Dimensions subject to change.
Combo D
®
Performance and Material Specifications
CONNECTOR ASSEMBLIES
Description Material Finish
Shell
Insulator
Size 20 contacts when applicable
Bracket
Rivnut
Steel or Brass
Thermoplastic or Diallyl Phthalate, UL 94V-0 rated.
Copper alloy
Steel
Steel or Copper alloy
Yellow Chromate Cadmium or Gold over Nickel
None
50µ inches gold over copper or 100µ gold over copper.
Yellow Chromate over Cadmium
Gold over nickel or 50µ inches gold over copper.
Nickel or Gold
None
Copper alloy
Copper alloy
Teflon
Contacts and shells
Ring, retaining
Insulator
U.L. File Number: E8572
Type of Contact
Altitiude (feet/m)
Sea Level
90˚
1200
800
•
•
1500
1000
Average Flashover
Test
Average Flashover
Test
Average Flashover
Test
Average Flashover
Test
Average Flashover
Test
Signal Contact Current Rating
Temperature Rating
Signal Contact Resistance
5 Amp
-65˚C to+150˚C
55 @ 7.5 Amp
50 ohm
Less than 1.3-1.0 up to 500
test current
megahertz
.1 db loss at 500 megahertz.
Coax Impedance
Coax VSWR
millivolt max
Coax Insertion Loss
1700
1250
3800
2800
3800
2800
2300
1700
2300
1700
900
675
900
675
650
475
650
475
Impedance: 50 ohm
1000
750
650
475
500
375
900
600
•
•
1000
650
1500
1000
1500
1000
1500
1000
1000
650
1500
1000
1000
650
600
400
•
•
500
325
700
475
900
600
500
325
400
275
•
•
500
325
500
325
650
425
500
325
Straight 90˚ Straight 90˚ Straight 90˚ Straight
20,000/6096 50,000/15240 70,000/1336
Center Conductor
to Coaxial Shell
Coaxial Shell to Nearest
Standard Solder Pot Contact
High Power contact and/or
Coaxial Shell to Plug Shell
HV Contact to Nearest
Contact or to Shell
All voltage figures are rms AC 60 rms cps, measured at approximately +25˚C, 50% rh.
See Commerical D Subminiature catalog for additional Combo D options. including 75 ohm Coax.
#20 Signal
COAXIAL ASSEMBLY
DIELECTRIC WITHSTANDING VOLTAGE
PERFORMANCE DATA
Combination D Subminiature connectors are the
fastest growing segment of the D Subminiature
market. ITT Cannon engineering teams, in keeping
pace with the demands of the industry, have devel-
oped the broadest selection of combination D Sub-
miniature available.
We offer the ability to intergrate signal and coax,
high power, and high voltage. You can mix red,
green, and blue video lines with signal and up to 40
amps of power in the same package.
Design variations of the new Combo D connector,
versus other packaging methods, include the proven
ITT Cannon polarized "D" shape to prevent mis-
mating; dense, space-saving packaging; and diverse
mounting options. Choose from a variety of cable
cand printed wiring board selections. Printed wiring
board combos come pre-assembled with fixed con-
tacts eliminating the need to buy several compo-
nets.
This new line of conectors offers you unlimited
design versatility.
Straight and right angle printed wiring board contacts are available in both coax and high power versions.
