M39029/77-428 Amphenol, M39029/77-428 Datasheet - Page 9

• 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

Coax Contacts with Frequency
Range of DC to 40 GHz
HIGH FREQUENCY COAX
CONTACTS WITH “FLOAT
MOUNT” TECHNOLOGY
Amphenol Aerospace now offers DC
to 40 GHz size 8 coaxial contacts for
the D38999 housing and standard
inserts. These contacts can be
terminated to a multiple of cable types
depending on the application.
By using standard interfaces that are based on MIL-STD-348 and can be
installed in any D38999 size 8 insert, Amphenol has transformed the circular
connector industry. This technology expands the use of D38999 connectors to
include the microwave transmission lines within the multi-port configuration
without change to a custom connector.
The high frequencies are maintained by Amphenol’s unique “Float Mount”
technology. This technology allows for consistent microwave performance while
maintaining tight mechanical tolerances. This consistency provides superior
electrical performance and, unlike other blindmate connectors, will maintain an
accurate phase length when mated. See page 30 for specifications, performanc-
es and ordering of this contact.
Twinax Contacts for Printed
Circuit Board Applications
PC TAIL TWINAX
CONTACTS
Amphenol provides Printed
Circuit Tail Twinax contacts for
MIL-DTL-38999 Series I and III
cylindrical connectors and also
for ARINC 404 and ARINC 600
rectangular connectors. High
reliability is assured with factory
pre-assembled contacts and
standardized termination to the
board.
Shielded Triax Contacts
TRIAX CONTACTS WITH THREE
CONDUCTORS FOR USE WITH
TRIAX CABLE
Amphenol supplies sizes 8, 10 and 12
triax contacts for use in MIL-DTL-38999
Series I, II and III connectors. Triax con-
tacts provide additional shielding when terminated to triax
cable having solid or stranded center conductors. See cable compatibility in the
Cable Usage Guide and performance data and ordering of triax contacts on
pages 34-37. Each of the three conductors of the triax contact is separated by
dielectric insulation to isolate ground planes and to improve shielding effective-
ness. All conductors are crimp terminated for high reliability and ease of
assembly. Triax contacts may be specified for direct connection to printed circuit
boards. For maximum system flexibility, triax contacts may be mixed with coax,
twinax and power contacts in a single connector.
See pages 35-37 for performance data and ordering of PC tail twinax contacts,
and consult Amphenol Aerospace for further information needed. Also see
Amphenol catalog 12-170, Cylindrical Connectors for Printed Circuit Boards, or
Catalog 12-C1, Amphenol’s new combined 38999 catalog.
High Frequency Size 8 Coax Contacts
Variety of PC Tail Twinax Contacts
with “Float Mount Technology
5
5
Triax Contacts
HF38999 - D38999 Connectors with
High Frequency Coax Contacts
D38999 Connectors
with PC Tail
Twinax
Contacts
Printed Circuit Twinax Contacts
provide a cost effective packaging
solution for limited space applications
where connectors are attached to
printed circuit boards.
Rail Launch MIL-STD-1760
Connector with
Triax Contacts