English
Language : 

10-503140-032 Datasheet, PDF (398/437 Pages) Amphenol Corporation – The Interconnection Leader
Twinax Contacts for MIL-DTL-38999
Amphenol
General Description, Application Data - Size 10 &12
Aerospace
Amphenol® Twinax Contacts -Were designed for
use with twinax cable in Data Bus systems. Twinax contacts
provide the following benefits:
• Protection from magnetic interference
• Protection from electrostatic interference including nuclear
elec­tromagnetic pulse
• Meets parameters defined by MIL-STD-1553B
• Maintains shield integrity through a multi-pin circular
connec­tor and does not require contact polarization within
the insert
SIZE 10 & 12 CONCENTRIC TWINAX
CONTACTS
The size 12 concentric twinax contact interface was developed for
JN1104 EuroFighter contacts, and can be used in any size 12
cavity M38999 I, II or III or SJT connector.
Features:
• Operating temperature –55°C to 175°C
• Pins are scoop-proof
• Meets performance levels of M38999 connector
• 4 components, gold plated crimp termination
• For use with a variety of cables (See chart below)
TYPICAL ELECTRICAL PERFORMANCE
Size 10 & 12 Concentric Twinax Contacts
Voltage Rating: 500 Vrms max. @ sea level
Contact Resistance:
Center @ 1 Amp, 55 millivolts max. voltage drop @ 25°C
Intermediate @ 1 Amp, 55 millivolts max. voltage drop @ 25°C
Outer @ 12 Amps, 85 millivolts max. voltage drop @ 25°C
Operating Frequency: 0–30 MHz
Dielectric Withstanding Voltage:
Center to Intermediate 800 VAC Rms @ Sea Level
Intermediate to Outer 500 VAC Rms @ Sea Level
Jacket
Braid
Insulation
Center
Conductor
Cable Illustration - Twinax Contact
Concentric Twinax Contacts Size 12
Unassembled Components of Size
12 Concentric Twinax Contact
SIZE 10 & 12 CONCENTRIC TWINAX CONTACTS FOR USE IN D38999 CONNECTORS
For use with
Cable
Concentric Twinaxial Contact
Part Number
(Termination Instruction Sheet)**
Contact Size
Comments
Connector
Series
Pin
Socket
M17/176-00002,
ST5M1212-002
21-33909-25 21-33908-25
(L-2092-G)
(L-2092-G)
0024A0024, Fileca
F2709-13-CA
21-33909-28
(L-2092-G)
21-33908-28
(L-2092-G)
EPD32263A,10612,
GSC-12-2548-00
21-33909-29
(L-2092-H)
21-33908-29
(L-2092-H)
ASNE0849,
21-33909-81 21-33908-81
12
5PTM1T04-1
(L-2092-AB)
(L-2092-AB)
VG95218T023D002
21-33909-91
(L-2092-AC)
21-33908-91
(L-2092-AC)
JN1104 Interface
D38999 Series I, III
VG95218T023D002
21-33909-101
(L-2092-AC)
21-33908-101
(L-2092-AC)
Same as -91 except
new ferrule with wire
support
M17/176-00002,
GSC-12-2549-00
0024A0024
21-33640-25
(L-2092-W)
12
21-33640-28
(L-2092-V)
JN1104 Interface
D38999 Series II
5M2022-003
21-33844-1
(L-1255-A)
21-33843-1
(L-1255-B)
10
Supplied with
Thermal fit sleeve
D38999 Series I, III
CONTACT ORDERING: Example number given in chart above 21-33909-25 should be ordered as 21-033909-025;
example number 21-33843-1 should be ordered as 21-033843-001. Adding Zeros is necessary for Amphenol ordering process on all
contact numbers.
**Termination instructions are packaged with each contact and can be found on-line at: www.amphenol-aerospace.com/serviceinstructions.asp
Contact Amphenol Aerospace for more information at 800-678-0141 • www.amphenol-aerospace.com 397