RF Microwave Cable Assemblies Including Bel Fuse 5151-DKF-0048 for Industrial

Product Specification

Semflex Precision Microwave Coaxial Cable Assemblies

Semflex, a Cinch Connectivity Solutions brand, has been manufacturing high-quality coaxial cable for over 40 years. Leveraging extensive expertise, Semflex offers rapid design and manufacturing of cable solutions tailored to specific environmental, mechanical, and electrical requirements. As a vertically integrated company, Semflex produces high-performance RF/Microwave cables, cable assemblies, and connectors for a global clientele in high-technology industries. Semflex's mission is to contribute to customer success through cost-effective, one-stop shopping for RF and microwave products, reduced time-to-market with rapid turnaround for new designs, and increased system reliability via high-quality products that exceed specifications. These cable assemblies are utilized in a variety of industries including military weapons platforms, electronic countermeasures, cellular infrastructure, satellite communications, commercial and military airframes, precision test and measurement, semiconductor sputtering, missile guidance systems, communication systems, high power applications, phased array radars, professional audio, industrial lasers, and medical MRI.

Product Attributes

• Brand: Semflex (a Cinch Connectivity Solutions brand)
• Origin: USA (implied by belfuse.com/cinch)

Technical Specifications

Catalog Configured Cable Assemblies

HPI/LAI Series

The most customer configurable cable assembly series, available with high-performance HP and low attenuation LA cable series. Offers custom options like phase matching and marking upon request. All connectors designed to meet MIL-C-39012 standards and ensure optimal connector-to-cable transition. Suitable for applications up to 50GHz.

Jacket Types: BF (FEP), BP (Polyurethane)

Center Conductor Types: S (Solid), B (Stranded - Omit for LA Series Cables)

Assembly Lengths: Min 6 in, Max 480 in. Standard Length Tolerance: 6-119 -0, +0.5; 120-179 -0, +1; 180-480 -0, +4.

HPT Series

Features heavy-duty on-cable hot molded rubber boots for strain relief and extended life. Connectors are specially designed for excellent adhesion to the boot. Suitable for lab and production testing and high flexure applications up to 50GHz.

Assembly Lengths: Min 6 in, Max 480 in.

DKF Series

Features heavy-duty slip-on rubber boots for strain relief. Connectors are specially designed for excellent adhesion to the boot. Available in standard lengths with straight male connectors for lab and production applications up to 18GHz.

Assembly Lengths: Min 6 in, Max 480 in.

SWI Series

A higher performance alternative to RG series cable assemblies, ideal for in-box or in-cabinet applications up to 18GHz.

Assembly Lengths: Min 6 in, Max 480 in.

Superior Cable Technology

Semflex offers a variety of 50 ohm cables designed to meet specific performance/cost requirements. Different cable characteristics require special design considerations. Semflex's product lines leverage superior cable technology, matching design and construction to specific application needs.

Jacket Materials

• Polyurethane: Low temperature rating, UV resistant, abrasion resistant, flexible (-65 to 85C).
• FEP: High temperature rating, chemical resistant, moisture resistant, low smoke, low outgassing (-65 to 200C).

Shielding Options

• Triple Shield: Woven flat braid, polyimide foil, round braid (>90 dB shielding effectiveness).
• Double Shield: Helical flat braid, round braid (>100 dB shielding effectiveness).
• Double Shield: Woven flat braid, round braid (>85 dB shielding effectiveness).
• Double Shield: Polyester foil, round braid (>85 dB shielding effectiveness).
• Double Shield: Round braid, round braid (>60 dB shielding effectiveness).
• Single Shield: Round braid (>40 dB shielding effectiveness).

Dielectric Materials

• Polyethylene: Temp (-40 to 85C), VP (66-85%).
• Solid PTFE: Temp (-65 to 125C), VP (70%).
• Low Density PTFE: Temp (-65 to 200C), VP (74-78%).
• Ultra Low Density PTFE: Temp (-65 to 200C), VP (82-85%).

Center Conductor Materials

• Solid Conductors: Less resistance, lower loss, higher power.
• Stranded Conductors: More flexible.
• Silver Plating: Lowest loss, solderable.
• Copper Clad: Cost effective, solderable.

High Performance Cable

The High Performance Product Line includes four series of cables suitable for applications with the most stringent mechanical, electrical or environmental requirements, operating up to 50GHz. Offers low loss, low VSWR, high power, high temperature, flexibility and phase stability.

LA Series Cable

Provides the best available combination of low attenuation, phase stability, and mechanical performance. Offers excellent bend and crush resistance. Best choice for phase stability over temperature and flexure.

HP Series Cable

A long-standing choice for military and aerospace interconnects in ground, sea, and airborne systems. Also excels in test and measurement applications, offering high performance, flexibility, and a wide range of precision connectors for applications up to 50GHz. Triple shield construction provides excellent connector attachment strength and resistance to harsh handling.

SW Series Cable

Offers low loss cable solutions that bridge the gap between lower performance RG cables and expensive high performance cables. Employs microporous PTFE dielectrics and a simple double braid construction for exceptional electrical performance and simplified connector attachments.

KW Series Cable

Utilizes copper clad aluminum center conductors for increased flexibility and microporous (expanded) PTFE dielectrics for increased power handling. Silver plated flat and round braids provide >85 dB shielding effectiveness. The soft, pliable polyurethane jacket is fire retardant and UV resistant, suitable for indoor and outdoor applications. Offers ultra low loss and high power ratings with superior flexibility compared to corrugated cables.

SM Series Cable

Offers a flexible alternative to semi-rigid cable, utilizing the same connectors and assembly tooling. Ideal for applications such as military ECM and guidance systems, commercial antennas, and communication applications. Double shield construction provides >100 dB of shielding effectiveness.

Connectors Overview

Semflex offers a large selection of microwave connectors designed for excellent electrical transitions and low VSWR. They also provide hundreds of other connector designs for special requirements, including high power, swept 90 bends, environmental sealing, low intermod characteristics, and special plating or finishes.

Insertion Loss Calculation Formula

Cable Insertion Loss, dB/in @ Freq (GHz) = L x [( k1 x F ) + ( k2 x F ) ] / 1200

IL = Insertion Loss (dB)

L = Length (in)

F = Frequency (GHz)

Connector Loss, dB @ Freq (GHz) = k3 x F

VSWR Guide (Example for HPI/LAI Series)

*Contact factory for detailed VSWR specifications.

Power Handling

Average power ratings are dependent on the long-term operating temperature of the dielectric material. Published ratings are based on VSWR of 1.0:1, at sea level and an ambient temperature of 25 C. Ratings can be adjusted using derating factors for temperature and altitude.

*Average power ratings of connector interfaces are typical for most applications and based on 900MHz.