SMA Cables

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Each Cable is Terminated with SMA Male Connectors

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• Available in 6" to 72" Lengths
• 50 Ω Impedance
• DC - 3 GHz Frequency Range
• 750 V (RMS) Dielectric Withstanding Voltage
• 250 V (RMS) Working Voltage
• RG-316 Cable

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Each Cable is Terminated with SMA Male Connectors

• Premium Microwave Cables for High-Frequency Applications
• Available in 3" to 120" Lengths
• 50 Ω Impedance
• DC - 26 GHz Frequency Range
• 500 VDC Withstand Voltage
• 2.6 mm Cable Diameter

Thorlabs’ SMA-to-SMA Microwave Cables support frequencies from DC up to 26 GHz. Each flexible cable is terminated with an SMA male connector on either end (see the image to the right). They are available in lengths ranging from 3" to 120". Each cable has a low VSWR from DC to 26 GHz as well as a low insertion loss. In general, we recommend using the shortest cable that is suitable for your application.

The SMA connector can mate directly to a 2.92 mm, 3.5 mm, or K connector. As a result, these cables are compatible with many of Thorlabs’ High-Speed Detectors or Fiber-Coupled EO Modulators that use SMA connectors.

For more information on Thorlabs’ full selection of Premium Microwave Cables for high-frequency applications, see the full web presentation.

A preset torque wrench is available below to ensure that the proper mating torque is supplied when connecting these cables. A torque wrench with a preset torque value should always be used to mate these coaxial connectors. Not doing so can damage the cable or reduce its overall performance.

Item #	Length	Max Insertion Loss	Insertion Loss Plot (Click to Enlarge)
SMM3	76 mm ± 8 mm (3.00" ± 0.30")	0.9 dB
SMM6	152 mm ± 10 mm (6.00" ± 0.40")	1.3 dB
SMM12	305 mm ± 10 mm (12.00" ± 0.40")	2.0 dB
SMM24	610 mm ± 10 mm (24.00" ± 0.40")	3.5 dB
SMM36	914 mm ± 10 mm (36.00" ± 0.40")	4.9 dB
SMM72	1829 mm ± 20 mm (72.00" ± 0.80")	9.5 dB
SMM120	3048 mm ± 30 mm (120.00" ± 1.20")	15.3 dB

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Boot Style May Vary

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Boot Style Pictured Above is Only Representative

• Available in 6" to 72" Lengths
• 50 Ω Impedance
• DC - 4 GHz Frequency Range
• 750 V (RMS) Dielectric Withstanding Voltage
• 250 V (RMS) Working Voltage
• RG-316 Cable

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SMA Male to SMP Female
(Item #s SMGF3 and SMGF6)

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SMA Female to SMP Female
(Item #s SFGF3 and SFGF6)

• Premium Microwave Cables for High-Frequency Applications
• 50 Ω Impedance
• Available in 3" or 6" Lengths
• DC - 18 GHz Frequency Range
• 1500 VDC Withstand Voltage
• 2.64 mm Cable Diameter
• Available with SMA Male or Female Connector to SMP Female Connector

Thorlabs’ Premium Microwave Adapter Cables have an SMP female connector on one end and either a male or female SMA connector on the other. Each style of adapter cable is available in 3" or 6" lengths. Each cable has a low VSWR of ≤1.4 from DC to 18 GHz, as well as a low insertion loss (see the table below). In general, we recommend using the shortest cable that is suitable for your application.

The SMP connector can mate directly to a GPO^® connector, while the SMA connector can mate directly to a 2.92 mm, 3.5 mm, or K™ connector. The GPO connector compatibility makes these cables suitable for use with Thorlabs’ Fiber-Coupled EO Modulators.

For more information on Thorlabs’ full selection of Premium Microwave Cables for high-frequency applications, see the full web presentation.

A preset torque wrench is available below to ensure that the proper mating torque is supplied when connecting these cables. A torque wrench with a preset torque value should always be used to mate these coaxial connectors. Not doing so can damage the cable or reduce its overall performance.

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• MMCX Male Connector to SMA Male Connector
• 1 m Cable Length
• DC - 6 GHz Frequency Range
• 50 Ω Normal Impedance
• 170 V Max Operating Voltage

The CA3439 RG-174 coaxial cable features a male MMCX connector on one end and a male SMA connector on the other. It can be connected to I/O ports on the Kinesis^® Vertical Translation Stage and Kinesis^® 30 mm XY Stage for external triggering applications.

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The Wrench is Engraved for Easy Identification in the Field

• Break-Over Design Ensures Proper Mating Torque is Supplied
• Preset to 5 in-lbs (0.57 N•m) to Prevent Over-Tightening of Brass SMA Connectors
• Engraved with Preset Torque Value, Torque Direction, Wrench Size, and Item #

These 5/16” Torque Wrenches have a preset torque value of 5 in-lbs to prevent over-tightening most SMA connectors. When the preset torque value has been achieved, the break-over design will cause the pivoting joint to bend. This will prevent further force from being applied to the connector. The wrench's hex head will move back into place once the force is removed. Each wrench is engraved with its preset torque value, torque direction, wrench size, and item # for easy identification in the field.

The preset torque value for each wrench is guaranteed for one year from the date of purchase. If necessary, the wrench may be returned to Thorlabs for recalibration, please contact Tech Support for details.

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• Wall Mount Cable Racks
• Store Cables Straight and Untangled

The WMR14 is a test lead holder for wires up to 0.26" (6.6 mm) in diameter and has 14 slots for cables. It is ideal for holding fiber optic patch cables.

The WMR9 is a test lead holder for wires up to 0.45" (11.4 mm) in diameter and has 9 slots for cables. The wide slots are ideal for holding power cords and heavy duty cables. 

These wall mount cable racks are made from cold rolled steel with a baked enamel finish. The WMR14 is 11.00" (279.4 mm) long and the WMR9 is 10.96" (278.5 mm) long. Both racks extend outward from the wall by 3.51" (89.1 mm) and feature two mounting holes that are separated by 6.63" (168.3 mm).