The PCB layout are shown in our Unipole/Multipole catalogue for most products of the standard LEMO range. In the case of connector with a "G" keying, contact n°1 is placed just below the key or slightly to the left side. Socket (or receptacles) are usualy fitted with female contact (part number example: ECG.1B.305.CLN). Beware, in some occasions our socket (or receptacle) can be fitted also with male contacts. Male contacts for socket ( or receptables) are called "inverted contacts" or "reverse gender", most of the time the connector uses a "J" keying (part number example: ECJ.1B.305.CLD). The following example shows a connector fitted with the standard print female contacts.
Before LEMO can assist with a mating plug part number, we must first identify the LEMO receptacle.
First, check your equipment documentation to see if the LEMO part number is included.
If not, check the equipment manufacturer's web site to determine if they reference this information.
If the first two steps do not yield a LEMO part number download a Receptacle Identification Guide for more assistance.
Yes. LEMO's distinctive "chocolate plate" connector design is a registered trademark US Reg 2'703'464 and Europe Registration 798'106
The mark consists "...of truncated pyramidal projections formed on an outer surface of a connector, and with each truncated pyramidal projection having a square based on a square top"
The 5th letter of a LEMO part number is an indication of the connector series. Other information needed to determine a full part number is as follows: How many contacts (pins) are in the insert of the connector? Is the shell soft chrome plated brass shell? Are the terminations solder or crimp? What is the diameter of the cable entering the rear of the connector (in millimetres if possible)? Is there a bend relief (strain relief) at the transition between the connector and the cable? What is the colour of the connector?
See Part Numbers Explained for more information about LEMO's part numbering system.
LEMO determines its published Operating Voltage V(signal) specifications as follows:
V(test) = 0.75 x V(breakdown)
V(signal) < 1/3 x V(test)
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)
•High Voltage contact
A LEMO plug is typically marked with the LEMO name and the first 5 characters of the part number, which represent the model, size, and series.For more information, download a detailed Plug Identification Guide A LEMO receptacle is typically marked with the LEMO name and the first 5 characters of the part number, which represent the model, size, and series.For more information, download a detailed Receptacle Identification Guide