ESQ-121-37-G-S-LL

Rectangular connectors-headers, receptacles, and female sockets, such as the ESQ-121-37-G-S-LL, are some of the most commonly used interconnect components in the world. They are found in virtually anything with a circuit board, from computers and phones, to robots and satellites. Given their ubiquity, it’s important to understand the functionality and purpose of these connectors, so let’s take a closer look at the ESQ-121-37-G-S-LL and explore its application field and working principle.

The complete ESQ-121-37-G-S-LL consists of a plug and receptacle, as well as a coupling and actuator. The plug is used to join two electrical circuits, while the receptacle provides the necessary interface required for the mounting of the plug. Meanwhile, the actuator enables the mating and locking of the plug and receptacle. Additionally, the coupling feature provides a self-wiping action to maintain contact consistency as the plug is mated and unmated.

The ESQ-121-37-G-S-LL’s application field is vast and varied, with the connector primarily used in equipment with higher density and increasing current needs. These include medical devices, telecommunications, test and measurement equipment, industrial and aerospace applications, automotive and consumer electronics, as well as high speed/high definition signal and power solutions—all applications where there is a need for reliable and secure connections. Additionally, the plug and its counterpart receptacle have an operating temperature range of -55°C to +105°C, so they are ideal for tough environments.

In terms of contact arrangement, the ESQ-121-37-G-S-LL offers 37 positions, with the center column consisting of 31 contacts ranging from 15 to 22 AWG. The plug has two separate contacts on either side, with one normally open and the other normally closed. A housing shell secures the entire unit from the environment, and the coupling nut is set in a desirable location for effortless contact interface.

When it comes to the working principle of the ESQ-121-37-G-S-LL, it essentially follows a two-stage engagement and disengagement process. To begin the engagement process, the plug is inserted into the receptacle, with the actuator causing the two contacts to come together at the exact same time; the pair is held firmly in place by the combination of the actuator and the self-wiping contact arrangement. Disengagement is initiated via a tension applied to the actuator, with the contacts springing back as soon as the tension is released.

The ESQ-121-37-G-S-LL is a dependable and robust solution offering a wide variety of applications, ambient operation, and reliable electrical connections. Whether for industrial automation, communications, or even consumer electronics, it’s no wonder that the ESQ-121-37-G-S-LL and similar connectors are used everywhere—empowering the world’s electrical connections.