MM2CJ-174LN-3 is a RG174 low noise 3 foot 50 ohm (0.91 meter) coax cable assembly with a 10-32 (Microdot compatible) connector on one end and a MMCX jack (female contact) connector on the other end.

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 Noise Cable

Low noise cable is generally not recommended for RF use. In our own testing, we see characteristics which differ from ordinary cable, including phase delay and impedance variations with frequency. In the field, we've seen mixed results in the GHz range; low noise cables seem to provide the best results at signal frequencies in the low MHz or lower. Ultrasonic NDT, for example, uses low-noise cable with signals as high as 100 MHz, but in transient pulse trains, where phase delay is less critical. The results you get will depend on the application, and as always you will want to do your own testing before ordering large quantities.

RG174 low noise Specifications

Impedance	50 ohms
Inner Conductor Diameter	0.48 mm
Dielectric Diameter	1.4 mm
Capacitance	124.6 pF/meter (38.0 pF/foot)
Minimum Operating Temperature	-40 C (-40.0 F)
Maximum Operating Temperature	60 C (140.0 F)
Jacket Diameter	2.57 mm
Jacket Material	PVC
Velocity Ratio	62%
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.
• 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.