10-503140-032 Datasheet, PDF (399/437 Pages) Amphenol Corporation – The Interconnection Leader

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Twinax Contacts for MIL-DTL-38999
General Description, Application Data - Size 8
High performance connectors within the D38999 families are the most
commonly used connectors for incorporation of Twinax contacts. These
connectors offer wide versatility in insert arrangements for not only
con­centric Twinax contacts, but also coax, triax, PCB, wire wrap,
thermo­couples and EMI filter contacts.
Other connectors available with concentric Twinax contacts:
• Wire Integrated Connectors (WICS) for Data Bus Systems. Consult
Amphenol Aerospace, Sidney, NY.
• ARINC 404, ARINC 600 and R27 Series rectangular connectors.
Supplied by Amphenol Canada.
SIZE 8 CONCENTRIC TWINAX CONTACTS
The size 8 concentric Twinax contact was developed for use in MIL-
STD-1553 Airborne multiplex data bus applications which require high
performance interconnect characteristics in multi-pin connectors. Ideal
for this application need is the high performance Tri-Start connector with
its fully scoop-proof feature of recessed pins. The concentric Twinax
contact is crimp terminable to twisted shielded cable. Features include:
• Provides protection from magnetic and electrostatic interfer­ence
including nuclear electromagnetic pulse
• Maintains shield integrity through a multi-pin circular
conn­ ector and does not require contact polarization within the insert
• 175°C rated and meets performance levels of MIL-DTL-38999
Series III connectors
• MIL-C-17/176-00002 cable termination
• Gold plated full crimp termination contacts qualified to
M39029/90 & /91
• Integral part of the MIL-STD-1760 interconnection system
• Also available in modified but intermateable versions for termi­nation
to a host of cables (See chart on next page)
TYPICAL ELECTRICAL PERFORMANCE
Size 8 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, 75 millivolts max. voltage drop @ 25°C
Operating Frequency: 0–20 MHz
Dielectric Withstanding Voltage:
Center to Intermediate: 1000 VAC Rms @ Sea Level
Intermediate to Outer: 500 VAC Rms@ Sea Level
MIL-DTL-38999 Series III Connector with Twinax
Contacts and Standard Contacts
Concentric Twinax Contacts Size 8
SHORT PROFILE TWINAX CONTACT OPTION
A Short Profile size 8 Twinax is avail­able that can be used with a low
profile right angle backshell and can offer increased packaging efficiency.
Consult Amphenol Aerospace for further information.
Short Profile Twinax vs
Standard Length Twinax Contact
398 Contact Amphenol Aerospace for more information at 800-678-0141 • www.amphenol-aerospace.com