M39029/77-428 Amphenol, M39029/77-428 Datasheet - Page 36

• 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 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
con centric twinax contacts, but also coax, triax, PCB, wire wrap,
thermo couples and EMI filter contacts.
Other connectors available with concentric twinax contacts:
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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:
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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 avail able that can be used with a low
profile right angle backshell and can offer increased packaging
efficiency. Consult Amphenol Aerospace for further information.
Wir
Amphenol Aerospace, Sidney, NY.
ARINC 404, ARINC 600 and R27 Series rectangular connectors.
Supplied by Amphenol Canada.
Provides protection from magnetic and electrostatic interfer ence
including nuclear electromagnetic pulse
Maintains shield integrity through a multi-pin cylindrical
con nector 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 termi nation to
a host of cables (See chart on next page)
e Integrated Connectors (WICS) for Data Bus Systems. Consult
32
Subminiature 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