SMA Cable Assemblies for Coaxial RF Connections

Balance insertion loss, bend radius and connector clearance in RF and microwave interconnects. Specify standard or custom SMA cable assemblies using flexible, low-loss, hand-formable or semi-rigid coax, with phase-matched SMA cables for multichannel systems. Options include male-to-male and male-to-female SMA-to-SMA cables and transitions to BNC, N-Type, TNC, SMB, MCX, MMCX, SMP, SMPM and U.FL, with straight or right-angle terminations and bulkhead mounting. Request a quote for custom RF cable assemblies with finished length, connector clocking and RF limits across your operating band.

SMA coaxial cable assembly showing straight male and bulkhead female connectors
✓Exact-Match Configurations
✓VNA Test Reports Provided
✓Pre-Production Design Review

Request SMA Cable Assembly Quotes

Submit your custom RF requirements for a verified technical review and formal wholesale pricing within 24 hours.

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Configure Assembly

Select connectors & cable type step-by-step.

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SMA Coaxial Cable Assembly Configurations

These common SMA configurations cover RF testing, communications equipment, and embedded systems. Configure your exact requirements using our custom RF cable assemblies tool.

01

SMA to SMA Cable

For RF modules, test equipment, antennas, and general microwave interconnects.

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02

SMA to BNC Cable

Connects compact SMA ports to BNC-based test, radio, and communications equipment.

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03

SMA to F Type Cable

Links SMA equipment with F Type broadband or video hardware; confirm impedance compatibility.

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04

SMA to MMCX Cable

Connects SMA equipment to ultracompact antenna and embedded RF ports.

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05

SMA to N Type Cable

Connects compact RF devices to rugged antenna, base-station, and outdoor interfaces.

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06

SMA to SMB Cable

Links threaded SMA equipment with quick-connect SMB ports in compact RF systems.

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Core Parameters & Cable Families

Review baseline parameters, then select a compatible cable family to configure your assembly.

Interface overview
Impedance50 Ω
Frequency rangeDC to 18 GHz (selected up to 34 GHz)
ConfigurationsSMA to SMA, BNC, F Type, MMCX, N Type, SMB, or MCX
End optionsMale or female; straight, right-angle, bulkhead, or flange-mount
Assembly lengthStandard and custom
RF performanceVSWR limits from ≤1.40:1 to ≤1.50:1
Cable Options
CableBest forFlexibilityLossImpedance
Flexible RF coaxGeneral RF and test connectionsHighModerate50 Ω
Low-loss flexibleLonger RF and antenna runsMedium–highLow50 Ω
Semi-rigidPrecision fixed routingLowLow50 Ω
Hand-formableCompact controlled routingMediumLow50 Ω
Phase-stable microwaveTest systems and phase-critical pathsMediumLow50 Ω

Final compatibility and performance are confirmed during engineering review.

Configured to Your RF Requirements

We engineer your custom SMA cable assembly to deliver predictability across standard, formed, and matched configurations for production, test, and microwave hardware.

01
Extended-Frequency Performance

Selected assemblies operate through 34 GHz for microwave connections beyond the standard 18 GHz range.

02
High Shielding Effectiveness

Selected semi-rigid builds provide up to 120 dB shielding at 18 GHz to limit leakage and interference.

03
Precision-Formed Routing

Computer-controlled forming supports bend radii from 1.27 mm and tolerances as tight as ±0.76 mm (±0.030″).

04
Matched Multi-Channel Builds

Phase, delay, and amplitude matching keeps parallel RF paths aligned in radar, array, and test systems.

RF SMA Cable Assembly Applications

SMA connector cable assemblies route high-frequency signals through compact systems where secure mating and repeatable RF performance matter.

Test and measurement

Connect VNAs, generators, analyzers, and test fixtures.

RF and microwave modules

Link amplifiers, filters, mixers, switches, and transceivers.

Wireless and antenna systems

Connect radios, antennas, base stations, and WLAN equipment.

Aerospace and defense

Support radar, avionics, SATCOM, and electronic warfare systems.

What Is an SMA Cable Assembly?

An SMA cable assembly is a ready-to-use 50 Ω RF connection made from a coaxial cable with SMA connectors attached to one or both ends. Each SMA coaxial cable assembly is delivered as a complete, plug-and-play signal path.

SMA Assembly Specifications

iPrece supports 50 Ω SMA cable assemblies using flexible, low-loss, conformable, semi-rigid, and specialized coaxial cables. Available frequency coverage extends from DC to 18 GHz, depending on the cable, SMA termination design, assembly length, body style, and required VSWR.

Supported Cable Types and Performance Ranges

Cable construction

Supported families

Frequency range

Typical VSWR

Shielding

Routing

Standard flexible

RG-58; RG-142; RG-174; RG-316; RG-400

Up to 18 GHz

Up to 1.50:1

Cable-specific

Flexible

Low-loss flexible

LMR-100 to LMR-400; microwave-grade types

Up to 26.5 GHz

Up to 1.40:1

>90 dB selected

Flexible; larger bend radius

Semi-rigid

0.020″ to 0.250″; RG-405; RG-402; RG-401

Up to 18 GHz

Up to 1.50:1

Up to 120 dB at 18 GHz

Fixed; pre-formed

Conformable

0.047″ to 0.250″ hand-formable types

Up to 26.5 GHz

Up to 1.50:1

Cable-specific

Installer-formed

Specialized

Phase-stable; high-temperature; low-PIM; armored

Up to 34 GHz

Customer-defined

Application-specific

Configuration-specific

Mechanical and Environmental Specifications

Parameter

Available range or options

Main dependency

Cable diameter

0.020″ to 0.405″+

Cable construction

Assembly length

Standard; custom physical; custom electrical

Loss; phase; routing

Minimum bend radius

From 1.27 mm

Cable size; construction

Operating temperature

−55°C to +125°C; up to +300°C selected

Material system

Dimensional tolerance

As tight as ±0.76 mm (±0.030″) selected

Cable size; geometry

Environmental protection

Jackets; boots; plating; sealing

Installation environment

Quality Assurance and Testing

Every SMA cable assembly is electrically tested and inspected to applicable industry and military requirements. Test reports are available for customer qualification and incoming QA.

  • Continuity and Hi-Pot tests verify conductor continuity, dielectric isolation, and termination integrity.

  • VNA test reports verify insertion loss and VSWR through the specified operating range, including configurations up to 18 GHz.

  • Phase matching as tight as ±2 ps is available for selected semi-rigid SMA cables used in radar and multichannel RF modules.

BEFORE YOU REQUEST A QUOTE

SMA Cable Assembly FAQs

What is the maximum frequency of a custom SMA RF cable assembly?

Selected custom SMA assemblies support frequencies up to 18 GHz. The actual limit depends on the cable type, SMA interface, assembly length, body style, bends, and required VSWR.

Do you use stainless steel or brass for SMA?

Both materials are available. Stainless steel provides greater mechanical durability and mating stability, while brass offers lower cost, lighter weight, and good electrical conductivity.

Can an RF SMA cable assembly use different connector series on each end?

Yes. Mixed-interface assemblies can connect SMA to MCX, MMCX, N, TNC, QMA, 2.92 mm, 3.5 mm, and other compatible RF interfaces.

Are semi-rigid SMA cables supplied straight or pre-formed?

Both options are available. Pre-formed assemblies can be manufactured to customer-defined bends, reference-plane dimensions, interface clocking, and mounting locations.

Can you provide phase-matched SMA assemblies?

Yes. We provide phase, delay, and amplitude-matched sets, with tolerances as tight as ±2 ps for selected configurations and frequencies.

Can iPrece reproduce an existing SMA cable assembly?

Yes. iPrece can manufacture or cross-reference an assembly from a drawing, CAD model, BOM, reference sample, or existing manufacturer part number.

SUBMIT REQUIREMENT
Configure Your Assembly or Upload Existing BOM

Select your specifications online or upload complete drawings for engineering review.