Quadrax Contacts,MIL-DTL-38999,Series III
General Description
Amphenol
Aerospace
Amphenol® Quadrax Contacts-Offer several
38999
advantages for high data transfer rates, low power consumption and
III
excellent
EMI compatibility:
HD
• Four strategically spaced inner contacts form two 100 or 150
Ohm matched impedance differential pairs
• Outer contact has rugged wall section for durability
• Available in size 8 crimp termination style
Dualok
II
I
• Also available in size 8 with PC tails (see page 233)
• Requires modification of MIL-DTL-38999 connector to
SJT
Accessories
Aquacon
Herm/Seal
PCB
TYPICAL QUADRAX
accommodate keyed contacts
SOCKET CONTACT
has socket outer contact
with a socket inner contact
(4) CENTER
BRAID
JACKET
CONDUCTORS
HIgH
TYPICAL QUADRAX PIN CONTACT
has pin outer contact with a pin
inner contact
SPꢀꢀD
INSULATION
Cable Illustration - Quadrax Contact
Fiber
Optics
Quadrax Contacts are gold plated,
crimp termination
Finish of mating contact parts: supplied with
0.000050 min. gold over nickel on mating
parts. Consult Amphenol for availability of
other finishes.
Contacts
Connectors
Cables
Quadrax Size 8 Contact Performance:
• Bandwidth: Up to 1.25 GHz
• Data Rate: Exceeding 2.5 Gbps.
• Voltage Rating: 500 Vrms max. @
sea level
Quadrax Pin with 8P8C “RJ45” Jack
Quadrax Pin Size 8 and MIL-DTL-38999
Series III Connector
• Dielectric Withstanding Voltage:
1000 VAC rms between all inner contacts
@ sea level, 500 VAC rms between inner
and outer contacts @ sea level
Guide for selecting a Backshell:
When ordering backshells, to avoid interference between the piggyback
grommets which are used on all size 8 cavities and the backshell the below
keepout dimensions must be adhered to. (based on existing arrangements)
Suggested Numbering for Quadrax
Contacts
ORIENTATION
KEY
1
1
2
Size
17
A Dia min L min
4
.734
.540
.540
.540
.540
.540
2
4
3
3
19
.869
21
.869
PIN CONTACT
MATING FACE
SOCKET CONTACT
MATING FACE
23
1.088
1.234
Differential Pairs, contacts 1-3, 2-4.
25
See page 243 for part number ordering of
popularly used 38999 Series III connectors with
100 ohm quadrax contacts.
Suggested Strain Relief - Insert Arrangements
9-5 or 19-18 with Quadrax Contacts
Quadrax differential pairs are 1 and 3, 2 and 4.
Due to the piggyback grommet interference with normal strain reliefs
on the shell size 9 only, the recommended strain relief for the
connector is: Amphenol part number TGW-R-5309-10 (OD Cad) or
TGF-R-5309-10 (Electroless nickel) - shell size 9 only. For 19-18 insert
pattern, recommended backshell: Glenair 367-221-NF.This is
recommended due to the proximity of the size 8 contacts in relation
to the shell.
Also see Quadrax contacts for ARINC 600 and R27
Rack and Panel Connectors on pages 265 and 266.
224
Contact Amphenol Aerospace for more information at 800-678-0141 • www.amphenol-aerospace.com