Lemo FAQ

LEMO manufactures over 90,000 versions of their connectors. While we can't display every code, if you're interested in pricing, you could consider a similar code with a different cable size. For example, you could look at FGG.1K.304.CLAC35 instead of FGG.1K.304.CLAC50. Alternatively, you can contact our LEMO sales team via email at lemo@johnbarry.com.au, and they will be happy to help you choose the right connector.

Despite our best efforts, changes or typographical errors may occur after the catalog is printed. If you notice any discrepancies, please report them by contacting lemo@johnbarry.com.au. 

LEMO's coaxial contacts are designed to accept a range of coaxial cables. A LEMO cable group describes the group of cables that are compatible with a particular contact.
For example, the 2B.802 can work with cable group 1 (RG.174 A/U, RG.188 A/U, RG.316 /U), group 2 (RG.178 B/U, RG.196 A/U) and group 3 (RG.179 B/U, RG.187 A/U).
For more information, contact our LEMO sales team on lemo@johnbarry.com.au. 

The EH_, HE_ and ED_ have a front panel seal. The EG_, EC_, EE_, PE_ and PB_ do not.

The "T-adapter" is a component included with LEMO K series fiber optic connectors. It helps securely attach the cable jacket to the rear of the connector and enables an epoxy-type moisture seal, preventing moisture ingress into the cable from that junction. For more information, refer to the "Cable Fixing" section in the Technical Library.

A "Z" typically denotes the absence of electrical contacts. In cases where the connector configuration necessitates only fiber optic contacts, the letter "Z" should be included in the contact code location to ensure the correct part number encoding. For example, the FGG.3K.03A.CLZC65 is a straight plug with a cable collet and two holes for fiber optic contacts. It's important to note that the two fiber optic contacts must be ordered separately.

Yes, the "Y" type units in the LEMO N Series feature a lever to aid in mating and unmating.

Yes, LEMO offers several connector series with optional features such as Stainless Steel shells and PEEK inserts. For wet environments, the sealed versions of these connectors have optional EPDM seals. (Note: EPDM seals are standard on the N Series).

Yes, the LEMO N Series Connector was specifically designed for use in robotics for telemanipulator applications. Additionally, LEMO offers several models in the B Series, S Series, K Series, and E Series connectors, which are also suitable for such applications. For more detailed information, please refer to the LEMO guide on Selecting a LEMO Remote Handling Connector.

The M series connectors are lightweight triple-start ratchet coupling type connectors specifically designed for avionics, military, security, motorsport, and heavy-duty applications.

No, the REDEL P and SP series cannot be inter-mated.

LEMO takes pride in adhering strictly to the IEC Standard, always prioritizing user safety when publishing specifications or making recommendations. The company determines its published Operating Voltage V(signal) specifications according to the following formula based on the IEC 60512-2 Test 4a Standard:

V(test) = 0.75 x V(breakdown) 

V(signal) < 1/3 x V(test)

where: 

V(breakdown) = Mean breakdown voltage 

V(test) = Test Voltage 

Substituting V(test) in equation (2) through V(test) 

from equation (1) yields equation (3): 

V(signal) = 1/3 x 0.75 x V(breakdown) = 1/4V(breakdown)

Yes, LEMO offers BNC adapters. These adapters allow for connections between BNC connectors and LEMO connectors, providing compatibility between devices using these different connector types.You can find several BNC adapters referenced in the NIM-CAMAC 00 series Catalog .

LEMO suggests cleaning the connector with Isopropyl Alcohol before applying thread lock adhesive. We offer a specialized formulation of Vibra-Tite® for the PSU (Polysulfone) and PEI (Polyetherimide) materials used by LEMO, known as VTCS-6. For further details, please contact us for the assembly instructions.

IP stands for Ingress Protection. The International Electrotechnical Commission (IEC) standard 60529, titled "Degrees of protection provided by enclosures (IP Code)," defines this rating system. A similar rating system is offered by NEMA.

The IP code classifies the sealing effectiveness of enclosures for electrical equipment against the intrusion of foreign bodies, including tools, dust, fingers, and moisture. It consists of the letters "IP" (Ingress Protection) followed by two digits.

The first digit of the IP code indicates the degree of protection against contact with moving parts and solid foreign bodies intruding into an enclosure:

0: No special protection.

1: Protection from large parts of the body or solid objects greater than 50 mm in diameter.

2: Protection against objects not greater than 80 mm in length and 12 mm in diameter.

3: Protection from entry by tools, wires, etc., with a diameter or thickness greater than 2.5 mm.

4: Protection from entry by solid objects with a diameter or thickness greater than 1.0 mm.

5: Protection from dust that would interfere with equipment operation.

6: Dust-tight.

The second digit indicates the degree of protection of the equipment inside the enclosure against the harmful entry of moisture:

0: No special protection.

1: Protection from vertically dripping water.

2: Protection from dripping water when tilted up to 15°.

3: Protection from sprayed water.

4: Protection from splashed water.

5: Protection from water projected from a nozzle.

6: Protection against heavy seas or powerful jets of water.

7: Protection against temporary immersion.

8: Protection against complete continuous submersion in water (up to 1 meter deep for 15 minutes).

A LEMO plug is usually labeled with the LEMO name and the initial 5 characters of the part number, indicating the model, size, and series. For additional details, you can download a comprehensive Plug Identification Guide . Similarly, a LEMO receptacle is typically marked with the LEMO name and the first 5 characters of the part number, denoting the model, size, and series, again refer to the comprehensive Receptacle Identification Guide. 

Bend reliefs are ordered as separate items from plugs. They are available in various colors and with different inside diameters. When ordering a plug, add the variant letter "Z" to the end of the part number to specify a rear collet nut with a lip designed to accept the bend relief.