L1M-174TPR-6 is a RG174 flexible (TPR jacket) 6 foot 50 ohm (1.83 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

This cable has a thermoplastic rubber (TPR) jacket (also known as thermoplastic elastomer or TPE). This material is softer and more flexible than a standard PVC cable jacket, even at low temperatures. TPR is resistant to petroleum oils, many chemicals, ozone, and other environmental contamination sources. TPR-jacketed cables weather well and are abrasion-resistant. They are not cut-resistant or built to withstand longitudinal tension, so should not be buried or used in umbilical tether applications without additional protection.

You've likely seen TPR before -- it's the high-friction, rubbery material used as the jacket for many test bench leads and patch cables. The flexibility makes TPR-jacketed cables popular for use with handheld sensors and probes; we see them used a lot with ultrasonic contact transducers and eddy current probes. The flexibility and small bend radius of these cables makes them ideal for use with microphones, DF antennas, and other handheld or wearable devices, in robotic or mechatronic remote control and telemetry, automated or CNC machines, and precision motion control. Popular outdoor uses include flightline, oil rig, pipeline inspection, arctic, and other extreme environment applications where flexibility at low temperature is important.

RG174 flexible (TPR jacket) Specifications

Impedance	50 ohms
Inner Conductor Diameter	0.48 mm
Dielectric Diameter	1.52 mm
Shield Diameter	2.23 mm
Capacitance	105.6 pF/meter (32.2 pF/foot)
Minimum Operating Temperature	-30 C (-22.0 F)
Maximum Operating Temperature	125 C (257.0 F)
Jacket Diameter	2.79 mm
Jacket Material	TPR
Velocity Ratio	66%
Core	stranded
Related	RG-174 RG174A/U RG-174A/U

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.