L1M-174LL-8 is a RG174 low loss 8 foot 50 ohm (2.44 meter) coax cable assembly with a L1 (Lemo 1 compatible) connector on one end and a 10-32 (Microdot compatible) connector on the other end.

Circular Connector Details Circular connectors, also called "push-pull" or "quick connect/disconnect", are commonly used in non-destructive testing (NDT), physics, and aerospace, on transducers, flaw detectors, and other applications. This style of connector was pioneered several decades ago by the Swiss connector manufacturer LEMO. Because of this history, practitioners in the industries that use this connector style still tend to call this a "LEMO connector", even though there are now multiple manufacturers making compatible connectors. "LEMO" is a registered trademark of LEMO USA. We source our connectors from multiple vendors. The connector we provide to you may be made by LEMO, or may be a compatible model from an aftermarket manufacturer. If you have a preference, please feel free to contact us for a quote. Our circular connectors come in two different sizes. The L1 connectors have a diameter of roughly 0.5". If you are looking for the smaller 0.25" diameter NIM/CAMAC connector, those are over here.

About M-Series Connectors

Click to enlarge There are multiple sizes of connectors which practitioners tend to call "Microdot". The most common size uses 10-32 threads, but there are also 5-44 and 1/4-32 variants, as shown in this image. This style of connector was pioneered by Malco in the late 1950's and early 1960's. Malco was later bought by Microdot, which was later bought by Tyco. Because of this history, users in the industries that use this connector style still call this a "Microdot connector", or even "Malco Connector", even though there are now multiple manufacturers making compatible connectors. "Microdot" is a trademark of Tyco. The connectors we provide are compatibles made by various manufacturers. They are often improved designs, mechanically more durable than the original Malco connector.

10-32 (M) Connector Details These connectors have threads that are the same as those on a 10-32 (UNF) machine screw. They are commonly used in non-destructive testing (NDT) and aerospace, on transducers, accelerometers, strain gauges, and force and acoustic sensors, among other applications. These connectors are often confused with 1/4-32 connectors; they look similar, varying only slightly in size. If in doubt, check your mating connector using a thread gauge or caliper: 1/4-32 threads have a minor diameter of approximately 5.4 mm, while 10-32 threads have a minor diameter of about 3.9 mm. See a thread chart for more details.

About 50 ohm cable assemblies

About Low Loss Cable

• Belden 7805 data sheet.
• Belden 8216 data sheet (an example RG174/U, for comparison)

This cable is not recommended for use in applications where it will undergo repeated cycles of flexing or vibration -- the solid core will eventually break under those conditions. You may instead want one of these stranded-core RG174 variants:

• RG174 standard has a stranded core and PVC jacket.
• RG174 TPR has a stranded core and TPR jacket. The TPR jacket provides for more flexibility, most useful in bench and handheld applications.
• RG174 low noise has a stranded core, PVC jacket, and a carbon layer under the braid. The carbon layer reduces flexing-induced static and provides some additional shielding. It's best at lower frequencies -- see the notes on that page.

RG174 low loss Specifications

Impedance	50 ohms
Capacitance	102.3 pF/meter (31.2 pF/foot)
Minimum Operating Temperature	-40 C (-40.0 F)
Maximum Operating Temperature	80 C (176.0 F)
Jacket Diameter	2.8 mm
Jacket Material	PVC
Velocity Ratio	66%
Core	solid
Related	Belden 7805

We hi-pot test our cable assemblies for high-voltage breakdown between core and braid. See About Hi-Pot Testing for why this might matter to you, particularly for physics or NDT applications. Caution: We make no claims as to the safety of this product for high-voltage use. These voltages can kill. Do not handle or approach any cable or conductor carrying high voltage; this includes insulated cables, nearby metal parts, water, and other conductive materials. Engineering and design for safety in your application are your responsibility.

Customization and Ordering

• We make our own cable assemblies. If you need a connector type that you don't see here, or if you have custom requirements, feel free to contact us.
• RoHS compliance available upon request.
• low noise RG174 cable available -- see Cables/RG174 low noise.
• If you need a quantity discount quote, please contact us. We're always happy to work with distributors.

All prices are subject to change without notice.

Actual product color, plating, and other details may differ from photo images depending on upstream component availability.

All images and text on this web site are copyright CD International Technology; all rights reserved.

All trademarks and registered trademarks are the property of their respective owners. LEMO is a registered trademark of LEMO USA. Microdot is a trademark of Tyco Electronics.