Micro-D Twinax

Connectors

Micro-D Twinax

Smiths Interconnect offers a complete

line of differential Twinax and Quadrax

connectors, contacts, and cable

assemblies for high speed Ethernet,

FireWire, and Fibre Channel applications.

Differential pair quadrax and twinax

connectors and cable assemblies offer

superior performance in high speed

matched impedance data-on-demand

applications. The signal to signal and

signal to shield characteristic impedance

is maintained throughout the connector

pair. A true twinaxial connector interface

ensures signal integrity while minimizing

jitter and data rate errors.

Testing Capabilities

Smiths Interconnect Quadrax and Twinax interconnects are

characterized for testing eye pattern, jitter, skew, and insertion

loss on differential pair 100 ohm high speed gigabit Ethernet

applications with a wide variety of testing protocols. We utilize

the Agilent E5071C 4 port network analyser to measure the

differential pair TDR impedance between Twinax connectors,

cable assemblies, and quad cable Ethernet and Fibre Channel

interconnect systems ensuring the most accurate acquired

signal for high speed communications testing. The E5071C 4

port network analyser is capable of highly accurate 100 ohm

differential measurements up to 20 GHz and can measure eye

diagrams up to 16 Gbps.

Features

Micro-D Twinax

■ Fibre Channel

■ Ethernet: 10Base-T, 100Base-T, 1000Base-T

■ FireWire: IEEE 1394a and 1394b

■ USB, DVI, HDMI, and InfiniBand

Specifications

Temperature Rating -55 °C to 125 °C

Corrosion

MIL-STD-202 Method 101, Test

Condition B

Shock

MIL-STD-202 Method 213, Test

Condition B

Vibration

MIL-STD-202 Method 204, Test

Condition B

Thermal Shock

MIL-STD-202 Method 107, Test

Condition B

Durability

500 mate/unmate cycles

minimum

Dielectric Withstand

Voltage

250 VDC

Insulation Resistance 5.000 MΩ min.

Contact Current Rating 3.0 A D.C. max.

Bandwidth Up to 3 GHz

Data Rates

Contacts designed to exceed

6 Gbps assembly dependent

upon type and length of cable

used

Differential Pair Cable

Impedance

100 Ω +10 Ω

Signal to Shield Cable

Impedance

5 Ω +7 Ω

Materials and Finishes

Shells & Inner Contacts

Brass per ASTM-B16, alloy

UNS C3600, or BeCu per

ASTM-B196, alloy UNS C17200,

C17300 or leaded nickel copper,

alloy UNS C19500, C19600.

Gold plate per MIL-DTL-45204

Type II, Class 1

Insulators

PTFE per ASTM-D1710.

Ultem per ASTM-D5205

Connector Plug/Receptacle

Shells

Aluminium per ASTM-B211/221,

6061-T6 electroless nickel

plate per SAE AMS-C-26074 or

cadmium plate per SAE AMS

QQ-P-416

Micro-D Twinax

Smiths Interconnect’s Micro-D Twinax Connectors (MDTX) offer twinax blind-mate assemblies fitted into a low-profile metallised

Micro-D style shell. This series allows for modularity of PCB routing of high speed signalling capable of 100 ohm differential pair

matched impedance for IEEE 1394b FireWire and gigabit Ethernet applications in a size 10 twinax contact. These connectors

allow for maximum space utilization, ultra-miniature size, high vibration capability and are extremely light weight and modular

with true signal integrity. Insert arrangements are available in 2, 4, 6 and 8 way twinax assemblies with mixed signal and power

contacts available in hybrid layouts. Connectors are available with locking post mechanisms or blind mate features.

Please consult Smiths Interconnect for unique hybrid layouts and custom shell configurations.

SIZE 10 Twinax Socket Contact 100 Ohm for MDTX Cable

Mount Plug

Part Number Cable Type Cable

(.825)

018934-0002 Differential Twinax 540-1153-000

018934-0003 Flexible Twinax 540-1161-000

018934-0004 Differential Twinax 540-1167-000

SIZE 10 Twinax Pin Contact 100 Ohm for MDTX Cable

Mount Receptacle

Part Number Cable Type Cable

(.750)

018834-0002 Differential Twinax 540-1153-000

018834-0003 Flexible Twinax 540-1161-000

018834-0004 Differential Twinax 540-1167-000