L1M25F-174TPR-4 is a RG174 flexible (TPR jacket) 4 foot 50 ohm (1.22 meter) coax cable assembly with
a L1 (Lemo 1 compatible) connector
on one end and
a 1/4-32 (S-93 compatible) female connector
on the other
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
- 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
- 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
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
threads, but there are also
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
1/4-32 (M25) Connector Details
- These connectors have threads that are the same as
those on a 1/4-32 (UNF) machine screw, and are
compatible with Microdot brand S-93 connectors. S-93
connectors are commonly used on nuclear particle detectors,
such as those made by
- These connectors are often confused with
connectors; they look similar, varying only slightly
If in doubt,
check your mating connector using a thread gauge or
caliper: 1/4-32 threads have a
of approximately 5.4 mm, while 10-32
threads have a minor diameter of about 3.9 mm. See a
for more details.
About 50 ohm cable assemblies
This cable assembly has a
impedance of 50 ohms.
50 ohm coax cable, connectors, and adapters are commonly used in GPS
and wifi (802.11 wireless LAN) antennas, ham transceivers, and other
radio frequency (RF) analog and digital signaling, microwave, radar,
hi-fidelity professional audio, non-destructive testing (NDT), oil and
petroleum production, ultrasonic transducers, accelerometers, strain
gauges, and some professional video applications.
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
The following are nominal values; if you have exact requirements that
need to be met for a given application, please contact us.
|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|
|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.