SSQ-138-03-S-D-RA

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Rectangular Connectors - Headers, Receptacles, Female Sockets: SSQ-138-03-S-D-RA Application Field and Working Principle

Rectangular connectors are commonly used electrical connectors in appliances, vehicles, electronic equipment, and other devices. They are characterized by their square-shaped housing and multiple needled contacts, which offer consistent electrical contact and provide a reliable connection point under various levels of vibration. SSQ-138-03-S-D-RA is one of the family of rectangular connectors, featuring a consistent 2.54 mm centre contact pitch allowing a broad selection of configurations with 1.27 mm row spacing.

This article details the application field and working principle of the SSQ-138-03-S-D-RA rectangular connector. Based on its mechanical, environmental and electrical performances, it can be widely used in many electrical connecting applications such as consumer electronics, medical instruments, industrial equipment, automotive and aircrafts.

Application Field

The SSQ-138-03-S-D-RA is designed for use in applications requiring general power, ground and signal interconnection such as consumer electronics, medical instruments, industrial equipment, automotive and aircrafts. It is designed for reliable performance in select mating cycles and extreme environmental conditions. Basic performance of SSQ-138-03-S-D-RA includes durability, contact resistance, insulation resistance, current carrying capacity, temperature range, and vibration. Its compact dimensions and excellent shielding performance allow for safe and efficient operation in a wide range of application fields.

Working Principle

The SSQ-138-03-S-D-RA connector utilizes two sets of mating pins on its male and female halves. These pins provide both power and signal connection between the two halves of the connector. The male and female pins are further insulated against each other by an IROM gasket, in order to ensure safety of the connection. The plastic resin housing serves as a shield against EM interference. The EM interference is again reduced by multiple contacts that provide a small connection surface between the two halves of the connector.

The SSQ-138-03-S-D-RA uses a standard pitch of 2.54mm and is designed to prevent misalignment between the two halves. This ensures a reliable connection even in high levels of vibration. The connector housing is designed to ensure a tight fit when mated with its counterparts, and is made of flame-resistant and resistant-resistant grades of thermoplastic. The contacts are constructed from phosphor bronze and tin plated, providing an excellent electrical connection.

The SSQ-138-03-S-D-RA utilizes a double polarization interlocking for secure mating. This provides an extra safeguard against misalignment during mating. The double polarized interlocking adds further protection against unauthorized mating by utilizing a positive lock feature to prevent unintentional matings, providing additional security.

In conclusion, the SSQ-138-03-S-D-RA rectangular connector is designed to meet the diverse applications of today with reliable performance in select mating cycles and extreme environmental conditions. Its various features, such as double polarization interlocking, tight fit, flame-resistant and shock-resistant grades of thermoplastic, and excellent shielding ensure that the connection is secure and reliable. These features also make it suitable for a wide range of applications.

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