M39029/77-428 Amphenol, M39029/77-428 Datasheet - Page 35

• Manufacturer Part Number: M39029/77-428
• Description: Circular MIL / Spec Connectors MIL-DTL-38999 I, III, IV Contact
• Manufacturer: Amphenol

Specifications of M39029/77-428

• Product Type: Contacts
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Twinax Contacts for Subminiature
Cylindricals
general description, application data - size 10 &12
Amphenol
twinax cable in Data Bus systems. Twinax contacts provide the
following benefits:
•
•
•
•
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:
•
•
•
•
•
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
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
M17/176-00002,
ST5M1212-002
0024A0024, Fileca
F2709-13-CA
EPD32263A,10612,
GSC-12-2548-00
ASNE0849,
5PTM1T04-1
VG95218T023D002
M17/176-00002,
GSC-12-2549-00
0024A0024
5M2022-003
on-line at: www.amphenol-aerospace.com/service instructions.asp
Protection from magnetic interference
Protection from electrostatic interference including nuclear elec-
tromagnetic pulse
Meets parameters defined by MIL-STD-1553B
Maintains shield integrity through a multi-pin cylindrical connec tor and
does not require contact polarization within the insert
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)
For use with
Cable
SIZE 10 & 12 CONCENTRIC TWINAX CONTACTS FOR USE IN D38999 CONNECTORS
®
Twinax Contacts
21-33909-28
21-33909-25
21-33909-29
21-33909-81
21-33909-91
Concentric Twinaxial Contact
21-33844-1
(L-2092-AB)
(L-2092-AC)
(Termination Instruction Sheet)**
(L-2092-G)
(L-2092-G)
(L-2092-H)
(L-1255-A)
Pin
Part Number
21-33908-25
21-33908-28
21-33908-29
21-33908-81
21-33908-91
21-33640-25
21-33640-28
21-33843-1
(L-2092-AB)
(L-2092-AC)
(L-2092-W)
(L-2092-G)
(L-2092-G)
(L-2092-H)
(L-1255-B)
(L-2092-V)
Socket
were designed for use with
Contact Size
12
12
10
31
Thermal fit sleeve
JN1104 Interface
JN1104 Interface
Supplied with
Comments
Jacket
D38999 Series I, III
D38999 Series I, III
Braid
D38999 Series II
Connector
Series
Insulation
Unassembled Components of Size 12
Concentric Twinax Contact
Concentric Twinax Contacts Size 12
Cable Illustration - Twinax Contact
Center
Conductor