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Smiths Interconnect
Cable Assembly Catalog (Semi-Rigid-Conformable-Flexible)

Cable Assembly Catalog (Semi-Rigid-Conformable-Flexible)

Product catalog summary

Overview: Smiths Interconnect is a leading provider of electronic components and RF products for critical applications in Defence, Aerospace, Communications, and Industrial markets. It is part of Smiths Group plc, employing around 22,000 people globally.

Product Portfolio: The catalogue includes high-reliability electrical connectors, cable assemblies, antenna systems, and RF/microwave solutions. Key technology brands include EMC, Hypertac, IDI, Lorch, Millitech, Reflex Photonics, RF Labs, Sabritec, TECOM, TRAK, and HSI.

Specifications and Performance: Detailed specifications and performance metrics are provided for various cable assemblies, including Semi-Rigid, Conformable, Flexible, and Low Loss options. The document highlights MIL-C-17 RG Series and LMR cables, focusing on their applications and performance characteristics.

Connector Selection and Options: Extensive options for connector selection are available, including armorized, weatherized, and RoHS compliant options. Ordering information for different series of cables is also included.

Applications: The cable assemblies are suitable for a wide range of applications, including 2-Way Radio, Antenna Systems, Base Stations, Cellular, Earth Stations, Fiber Optic Systems, High Frequency Interconnects, Instrumentation, Jumpers, Military Systems, Mobile Antennas, Radar Systems, Satcom, Satellites, Telecommunications, and Test Equipment Interconnects.

Engineering Data: The document includes engineering data on phase stability and temperature, as well as materials abbreviations, providing critical information for selecting the right cable assembly for specific applications.

Main Sections:

Specifications: Detailed specifications for different cable types are provided, including diameter, maximum frequency, loss at specific frequencies, impedance, velocity of propagation, shielding effectiveness, capacitance, delay, weight, temperature range, and minimum bend radius.
Procedures: Guidelines for selecting cables based on maximum frequency and attenuation are outlined. The document suggests determining the maximum frequency requirement first and then choosing cables with the lowest attenuation under that frequency.
Standards and Norms: The document references standard MIL-C-17 / RG Series and provides specifications for semi-rigid, conformable, and flexible cables, including their construction data and electrical specifications.
Recommendations: Recommendations are made for cable selection based on environmental conditions, flexibility, and phase stability over temperature. The document categorizes cables into best, better, good, fair, and not recommended based on these criteria.
Applications: Typical applications for the cables include in-box interconnects, component interconnects, and test cables. The document also highlights the use of cables in military systems, radar systems, telecommunications, and satellite communications.

Key Data from Tables:

Frequency and Insertion Loss: Cables are categorized by their maximum frequency capabilities (up to 65 GHz for some types) and their insertion loss characteristics, ranging from extremely low to extremely high.
Attenuation and Power Handling: Tables provide attenuation data (dB per 100 feet) and power handling capabilities (Watts) across different frequency bands, aiding in the selection of cables for specific power and attenuation requirements.

Critical Information:

Environmental Suitability: Cables are rated for harsh environments, with specific series recommended for best performance under adverse conditions.
Flexibility and Phase Stability: The document emphasizes the importance of flexibility and phase stability, providing ratings for each cable type to guide users in selecting the most suitable option for their needs.

Connector Selection & Options: This section outlines the available connectors for the Semi-Rigid Low Loss cable family, categorized by frequency and series. Connectors include 2.4 mm, 2.9 mm, SMA, Type N, and TNC, with options for straight and right-angle configurations. The maximum frequency is determined by the cable selected, and phase-matched sets are available with a precision of +/- 2.8 picoseconds. Weatherized protection is an option using polyolefin.

Ordering Information: Ordering involves specifying the cable type, options such as phase matching or weatherization, and the connectors at each end. An example part number is provided to illustrate the format.

Low Loss Semi-Rigid Cable Descriptions:

.085 Diameter: Suitable for high-reliability applications with mode-free operation up to 60 GHz. Features include superior shielding and high vibration resistance.
.141 Diameter: Offers a wide range of connectors and is stable under temperature changes, with mode-free operation up to 35 GHz.
.250 Diameter: Used where power and lower loss are required, with mode-free operation up to 18 GHz.

MIL-C-17 | RG Series Family & Alternatives: This section introduces the MIL-C-17/RG Series cables, which offer improved electrical performance over standard M17 cables. They are grouped by diameter and provide alternatives with increased flexibility, improved shielding, or lower insertion loss. Performance is up to 18 GHz, and a variety of connectors are available depending on the cable diameter.

Specifications: Specifications are divided into cables under and over 0.150" diameter, detailing general, electrical, and mechanical properties. Key parameters include impedance, velocity of propagation, shielding effectiveness, and temperature range.

Performance: Performance charts illustrate attenuation and power handling versus frequency for various cable types, highlighting the differences in performance across the RG316, 316D, RD316, and SF316 cables.

Options & Ordering Information: Details on cable options and part numbering codes are provided, with examples to guide ordering. Options include phase matching, weatherization, and extended boots.

Standard Flexible Cables: Standard flexible cables under 0.150" diameter are lightweight and flexible, suitable for applications where loss and power are not critical. They include RG cables and alternatives, offering cost-effective solutions with high shielding and flexibility.

Introduction: The document provides detailed specifications and options for various types of coaxial cables and connectors, focusing on the LMR® family of cables. These cables are designed for low-loss, high-shielding applications up to 5.8 GHz, suitable for both indoor and outdoor use.

Specifications:

General Specifications: The LMR cables come in different diameters (LMR-100A, LMR-195, LMR-240, LMR-400) with a maximum frequency of 5.8 GHz. They offer varying levels of loss at 5.8 GHz, with LMR-400 having the lowest loss.
Electrical Specifications: All cables have a nominal impedance of 50 ohms, with high shielding effectiveness (>90 dB/ft) and varying capacitance and delay values.
Mechanical Specifications: The cables are designed to operate in temperatures ranging from -40 to 85°C, with different minimum bend radii and weights.
Construction Data: The cables feature a bare copper or copper-clad aluminum inner conductor, polyethylene foam dielectric, and multiple shielding layers.

Performance: The document includes graphs showing attenuation and power handling versus frequency for different cable types, highlighting the performance characteristics of each.

Connector Selection & Options: Various connector types are available, including Type N, SMA, TNC, and BNC, with options for straight and right-angle configurations. Additional options include extended boots, dust caps, and armorized protective coverings.

Applications: The cables are suitable for a wide range of applications, including component interconnects, test cables, jumper assemblies, mobile antennas, GPS, WLAN, and WiMax.

Features/Benefits: The LMR cables offer low loss, high shielding, and flexibility, making them cost-effective alternatives to other cable types. They are designed for long-term outdoor use with UV-resistant jackets.

Cable Assembly Options: Options include armorized coverings for added protection, weather-proof sealing techniques for outdoor environments, and various jacket materials for enhanced durability.

Conclusion: The document provides comprehensive information on the LMR family of cables, emphasizing their versatility, performance, and suitability for various communication applications.

Specifications:

Temperature Rating: -20 to +135°C for PVC, -75 to +200°C for Neoprene, -50 to +200°C for Silicone Rubber.
Tensile Strength: 2,100 PSI for PVC, 1,000 PSI for Neoprene.
Elongation: 350% for PVC.
Flammability: Self-extinguishing.
Corrosive Effect: Non-corrosive.
Water Absorption: 0.20% for PVC, 0.10% for Extended Boots.
Meets specifications: MIL-I-23053, AMS-3636, AMS-3637, UL, CSA.

Materials:

Jacket Material: PVC (Extruded Thermoplastic Elastomer), Neoprene, Silicone Rubber.
Armor Material: Stainless Steel 304 alloy.

Procedures:

Crush strength test per ISO 15465-2003 Section 7.2.
Consult Sales Department for other types of coverings.

Cable Assembly Options:

Option AW: Armored protective covering with stainless steel armor and PVC jacket.
Option N: Neoprene jacket for UV and moisture protection.
Option MC: Monocoil armor with silicone rubber jacket.
Option MP: Monocoil armor with polyolefin jacket.
Option D: Dust caps for connector protection.
Option E: Extended Boot for strain relief.
Option ±2.8PS: Phase matching for precise electrical length.
Option RoHS: Compliance with European Directive for Reduction of Hazardous Substances.

Applications: Production and Lab Testing, Environmental Testing, Outdoor Installations, Harsh Chemical Environments.

Additional Notes: Cable length tolerance and definition provided. Pre-formed right angle options available for SMA connectors.

Introduction: This document provides detailed technical information on various types of connectors, their specifications, and application notes. It includes guidelines for handling and maintaining connectors to ensure optimal performance.

Specifications: The document lists a wide range of connectors, categorized by type, gender, and maximum frequency. Key types include 2.4 mm, 2.9 mm, 3.5 mm, SMA, TNC, BNC, and others, with frequencies ranging from 4 GHz to 50 GHz. Each connector type is associated with specific product codes for ordering.

Material and Plating: High-performance connectors are typically made from stainless steel, with options for gold plating. Lower frequency or cost-effective connectors may use brass with various plating options. To minimize intermodulation distortion, connectors with silver or tri-metal plating are recommended.

Connector Mating and Interseries Mating: The document details the mechanical and electrical properties of connectors with a 0.036-inch diameter center conductor. It highlights the importance of matching connector types to avoid damage and ensure good electrical performance. Specific return loss values are provided for different connector pairings.

Care and Handling: Proper care and handling of connector interfaces are crucial for maintaining performance. The document advises on cleaning procedures using isopropyl alcohol and lint-free swabs, and emphasizes the importance of interface cleanliness and gauging to prevent damage.

Engineering Data: Phase stability over temperature is discussed, with calculations provided for expected phase changes in coaxial cables. Material abbreviations are listed for various conductor, jacket, interlayer, and dielectric materials.

Global Support: Contact information for Smiths Interconnect's global support centers is provided, covering locations in the US, Europe, and Asia.

Catalog excerpts

Cable Assembly Catalog (Semi-Rigid-Conformable-Flexible)-1

smiths interconnect

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About Smith Interconnect Smiths Interconnect is a leading provider of technically differentiated electronic components, subsystems, microwave and radio frequency products that connect, protect and control critical applications in the Defence and Aerospace, Communications and Industrial markets. Our technology brands (EMC, Hypertac, IDI, Lorch, Millitech, Reflex Photonics, RF Labs, Sabritec, TECOM, TRAK and HSI) are synonymous with exceptional performance in technologically advanced, high quality solutions required for a high degree of safety and durability. Our extensive product portfolio includes...

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Technology Brands High Reliability RF/Microwave Resistive & Signal Distribution Components Board-level components incorporating advanced resistive and signal distribution technologies for a broad range of frequency spectrum applications. Extensive portfolio of RF devices used to attenuate, level, or terminate signals available in a variety of packages and footprints. Superior Performing Electrical Connectors for the Most Demanding Applications Premium interconnect solutions for electrical and electronic applications requiring optimised quality, performance, and reliability. Utilising the original...

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High Frequency Microwave Cable Assemblies & Coaxial Components High performance microwave cable assemblies and coaxial components supporting high performance operations, application- specific premium interconnects for high durability and harsh environments. High Reliability Connectors for Commercial Aerospace & Railway Joint venture with Sichuan Huafeng Enterprise Group Co. Ltd, one of the major manufacturers of electronic components in China. Industryleading connectivity solutions for commercial aerospace and railway markets in mainland China.

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