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Miltech Cable Assemblies

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MILTECH Cable Assembly Families 

MILTECH Cable Assemblies are available in a range of types -

 

MILTECH STANDARD (MT) SERIES 

This is our high performance workhorse series of rugged, low insertion loss, broadband (0.5-18GHz), vapor sealed, braided Aramid fiber outer jacket, cable assemblies. Qualified for use in countless applications, meeting demanding military standard and application-specific requireents, including MIL-T-81490 and MIL-C-87104/2 requirements as defined below.

MILTECH LIGHTWEIGHT (MTL) SERIES 

Lighter-weight versions of the standard MILTECH Assemblies. They also feature physically smaller - but still rugged and fully qualified - connectors.

MILTECH SPECIAL JACKET SERIES: MTXR, MTLS, MT-PUR, MT130   

Special Jackets for MILTECH assemblies include LS low smoke compounds, PUR ultra-flexible polyurethane, thin wall FEP and XR styles. More than just a special jacket, the XR cables are "eXtra Ruggedized"against physical damage -  this is a Sealed MilTech cable that incorporates an integrated crush-resisting spring inside the cable.

 

 

Miltech Technical Specifications Header

MilTech™ Technical Specifications

MILTECH™ CONSTRUCTION DETAILS (TYPICAL)


MILTECH™ CABLE CHARACTERISTICS

Miltech Cable Characteristics Header

CABLE MATERIALS

Center Conductor

Silver Plated Copper

Component A

Dielectric

Taped Polytetrafluoroethylene (PTFE)

Component B

First Shield

Silver Plated Copper Strip

Component C

Interlayer

Aluminum Backed Tape

Component D

Second Shield

Silver Plated Copper Braid

Component E

Inner Jacket

FEP

Component F

Outer Jacket

Braided Nomex™

Component G


MILTECH CONNECTOR CHARACTERISTICS

All of the MilTech connectors meet or exceed interface requirements of MIL-C-39012 and are uniquely designed to provide maximum mechanical and environmental performance.  Threaded connectors are of a precision stainless steel design, and contacts are precision heat-treated Beryllium Copper.

CONNECTOR MATERIALS

Center Contacts

Gold plated Beryllium Copper (BeCu)

Dielectrics

Polytetrafluoroethylene (PTFE)

Bodies and Coupling Nuts

Passivated Stainless Steel (Titanium for certain light weight connectors)

 

CABLE ASSEMBLY CHARACTERISTICS

ELECTRICAL CHARACTERISTICS

Tested Frequency Range

0.5 to 18 GHz (typical, also depends on cable choice)

Characteristic Impedance

50 Ohms

VSWR

1.40:1 maximum ; add 0.05 per angle connector

Insertion Loss

See individual cable specifications, add 0.1 dB per angle connector

Velocity of Propagation

See individual cable specifications

Maximum Operating Voltage

2500 Volts (1000 volts with SMA)

RF Leakage

-90 dB maximum  per foot over Tested Frequency Range including connectors

MECHANICAL CHARACTERISTICS

Operating Temperature Range

-55 to +150 degrees C (200 C maximum available on request)

Chemical Resistance

In accordance with MIL-T-81490 and MIL-C-87104

Flexure

In accordance with MIL-C-87104

Salt Fog

In accordance with MIL-T-81490, MIL-C-87104 and other specifications

Humidity

In accordance with MIL-T-81490, MIL-C-87104 and other specifications

Abrasion Resistance

In accordance with MIL-T-81490 and MIL-C-87104 /  .020” edge

Cable Connector Tensile Strength

See individual cable specifications

Vapor Leakage

1x10-5 cc/sec/ft  of Helium maximum including connectors

Vibration

In accordance with MIL-T-81490 and other specifications

Shock

In accordance with MIL-T-81490 and other specifications

 

 

MilTech Replaceable Connectors

Miltech Replaceable Connectors

A major benefit of choosing MILTECH Assemblies is the availability of many interchangeable connector front ends. This allows simple field replacement of damaged interfaces using hand tools, often while the cable assembly is still installed. Available to support the Standard, Lightweight and XR Cable Assemblies.

Replaceable connector front ends used in MILTECH assemblies maintain the vapor seal characteristics of the completed assembly, assuring uncompromised performance, even after in-situ maintenance replacing damaged components.

Replaceable Connector Information

Common Replaceable Connector Front End List - includes Lightweight (137 Style) Standard and XR Series (125 Style)

Times manufactures these and other replaceable front end families, and supports fielded cable assemblies with many replacement connector front ends. Your Times representative is ready to assist you with any spares needs you may have.

 

 

MilTech SELF-LOCKING Connectors

 Miltech Self LockingMiltech Self LockingMiltech Self Locking

Many applications benefit from choosing Times self-locking connectors -

Threaded coupling connections can be problematic in high-vibration-environment applications. For many years, this has been addressed by using lockwire to secure coupling nuts. Lockwiring is a labor-intensive process requiring special tooling, and is associated with the potential creation of FOD (Foreign Object Debris).

Times self-locking connectors on your assemblies eliminate the need for lockwiring, significantly reduce installation and maintenance times, and prevent lockwire-related FOD.

For help with using Times self-locking connectors on your assemblies, contact your Times Regional Application Engineer for experienced support.  Contact your Military/Aerospace Regional Representative.

For a listing of connectors suitable for use, including the self-locking connectors highlighted here, refer to the Replaceable Connector Information Section.

 

 

MilTech SUPPORT TOOLs

Miltech Support ToolsMiltech Support ToolsMiltech Support Tools

The MILTECH product line is supported with a series of easy-to-use hand tools and shop aids to allow straightforward connector maintenance in the field (if needed), and to assist with difficult installations.

Maintenance and Installation Tool drawings and instructions

Your Times Regional Application Engineer will be happy to support your organization with installation and straightforward maintenance training. Contact your Military/Aerospace Regional Representative .

 

 

SPECIALIZED MilTech PRODUCTs

Specialized Miltech Products

HIGH-DENSITY INTERCONNECTS / MULTI-PORTS -- BLINDMATE CONNECTIONS -- LOW SMOKE REQUIREMENTS -- TMTA ADAPTERS -- EQUALIZED ASSEMBLIES -- LOSSLESS (Zero-dB) ASSEMBLIES -- AXIALLY-ROTATING COAXIAL CONNECTORS -- STEPPED PHASE-ADJUSTMENT CONNECTORS -- CONTINUOUSLY PHASE-ADJUSTABLE CONNECTORS

Information on some of the more SPECIALIZED MILTECH PRODUCTS is available here. Contact your Military/Aerospace Regional Representative to get started developing the special interconnection solution to your application.

 

 

MilTech Cable Assembly Ordering Information  

A  Complete Part Number is specified as follows:

                  MTxyyy/L/C1/C2

Where      x = cable type (MT for Standard series, MTL for Lightweight series)
                  yyy
= cable type (265 or 340XR)
                   =   Length (in Inches or millimetres, see below)
                  C1  =  Connector 1 Designator
                  C2  =  Connector 2 Designator

Example 1 - a 460 inch long Cable Assembly with a Replaceable SMA
male on one end and a Replaceable TNC male on the other end would have the
Part Number MT340/in460/48530/48555

Example 2  - a 430 millimetre long Cable Assembly with a Replaceable SMA
male on one end and a Replaceable TNC male on the other end would have the
Part Number MTL330/mm430/48530/48555

 

Marking

Cable Assemblies are marked  in the center or on each end depending on Cable Assembly Length as follows:

Times Microwave Systems
MFG: xxxxx (TMS manufacturing CAGE Code, as applicable)
MILTECHxxx/xxx/xxxxx/xxxxxx

 

Length Tolerances

+0.5" / -0” (12.7mm) for Cable Assemblies less than 5 ft (1524mm)
+1" / -0” (25.4mm) for Cable Assemblies between 5 ft (1524mm) and 10 ft (2540mm)
+1% / -0% for Cable Assemblies Greater than 10 ft (2540mm)
+4% / -0% for Cable Assemblies with time delay or phase matching requirements

 

Testing

Each Cable Assembly is  measured  for Insertion Loss and VSWR  over the Test Frequency Range.