SQT-138-03-F-5

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Rectangular Connectors - Headers, Receptacles, Female Sockets are all components used in the electronics industry for making electrical connections. As such, each has a slightly different purpose and therefore a unique application field. One such connector is the SQT-138-03-F-5, which is a board-to-board connector. This particular type of connector is used for connecting two printed circuit boards (PCBs) together as a single unit.

SQT connectors are part of a family of connectors known as 1.27mm pitch connectors. In this family of connectors, the ‘SQT’ stands for ‘Square Terminal’; this is due to the fact that the terminal area (where the electrical connections are made) of these connectors are square in shape. The ‘138’ stands for 1.27mm pitch, ‘03’ stands for the number of positions in the connector and the ‘F’ stands for the form factor. In other words, SQT-138-03-F-5 is a square terminal board-to-board connector with 1.27mm pitch and 3 positions.

As per its name, the SQT-138-03-F-5 connector can be used for connecting two PCBs together, with an interface of a single row and three grid pins. This type of connector is typically used in applications which require a stable electrical connection, such as industrial or military electronics, where vibration and shock may be encountered.

The working principle of this connector is quite straightforward. To begin with, pins on one PCB are aligned with the receptacles on the other PCB. The components on the PCBs then engage each other, creating an electrical connection. The SQT-138-03-F-5 accompanies its pins/receptacles with a \'crimp-lock\' which securely holds the two components together.

In addition to its most common use (board-to-board connections), the SQT-138-03-F-5 connector can also be used as a cost-effective alternative to expensive socket adapters – rather than buying an entire adapter to connect two components, the SQT-138-03-F-5 can be employed as an adaptor in its own right. This is done by cutting away the cable/wire insulation from a standard cable and crimping the bare wires to the pins on the connector. This technique is known as \'crimp-and-strip’ - an efficient and low-cost option for cable assembly.

In summary, the SQT-138-03-F-5 connector is a board-to-board connector which typically used to create electrical connections between two PCBs, but can also be employed as a simple and cost-effective socket adapter alternative. This connector boasts a simple design, and is highly reliable in controlling electrical current. As such, it is increasingly being employed in a variety of applications - from the industrial and military sector, to general consumer electronics.

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