COPPERCATALOG datasheet(41/56 Pages) AAO

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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

connector 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

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

MIL-DTL-38999 Series III Connector with Twinax

Contacts and Standard Contacts

Concentric Twinax Contacts Size 8

Short Profile Twinax vs

Standard Length Twinax Contact

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