COPPERCATALOG datasheet(13/56 Pages) AAO

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38999

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Quadrax Contacts, MIL-DTL-38999, Series III

General Description

TYPICAL QUADRAX

SOCKET CONTACT

has socket outer contact

with a socket inner contact

TYPICAL QUADRAX PIN CONTACT

has pin outer contact with a pin

inner contact

Quadrax Pin Size 8 and MIL-DTL-38999

Series III Connector

Also see Quadrax contacts for ARINC 600 and R27

Rack and Panel Connectors on pages 265 and 266

Suggested Strain Relief - Insert Arrangements

9-5 or 19-18 with Quadrax Contacts

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

Quadrax Pin with 8P8C “RJ45” Jack

Cable Illustration - Quadrax Contact

BRAID

JACKET

INSULATION

(4) CENTER

CONDUCTORS

ORIENTATION

KEY

PIN CONTACT

MATING FACE

SOCKET CONTACT

MATING FACE

Suggested Numbering for Quadrax

Contacts

Differential Pairs, contacts 1-3, 2-4

See page 243 for part number ordering of

popularly used 38999 Series III connectors with

100 ohm quadrax contacts

Quadrax differential pairs are 1 and 3, 2 and 4

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

Quadrax Size 8 Contact Performance:

• Bandwidth: Up to 1 25 GHz

• Data Rate: Exceeding 2 5 Gbps

• Voltage Rating: 500 Vrms max @

sea level

• Dielectric Withstanding Voltage:

1000 VAC rms between all inner contacts

@ sea level, 500 VAC rms between inner

and outer contacts @ sea level

Amphenol® Quadrax Contacts-Offerseveral

advantages for high data transfer rates, low power consumption and

excellent

EMI compatibility:

• 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

• Also available in size 8 with PC tails (see page 233)

• Requires modification of MIL-DTL-38999 connector to

accommodate keyed contacts

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)

Size

A Dia Min

L Min

734

540

869

540

869

540

1 088

540

1 234

540

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