ESQT-125-02-M-T-375

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Internal and external connectors, materials, and applications are the three main components of the adapter family. Connectors are used in many different product categories including automotive, telecommunications, computers, medical devices, and other industrial products. Many industry professionals use an acronym to refer to the different connector types; ESQT is a common acronym used when discussing rectangular connectors. Specifically, the ESQT-125-02-M-T-375 is a popular option for those in search of an effective rectangular connector.

ESQT-125-02-M-T-375 Application Field and Working Principle

The ESQT-125-02-M-T-375 is a 4-pin male/male header connector and is similar to the ESQT-102-01-M-T-314 in that both are a low profile, interconnect connectors with mated height of 1.34 mm and a body height of 1.70 mm, respectively. This connector is commonly used in automotive, military, medical, industrial, and consumer applications.

It is a rear-mounted, two-row pluggable terminal design which makes it easy to plug into the rear of an electronic header port. Additionally, this type of header connector has a cost effective design and maintains low-profile constraints. The connector design includes low-current signals with resistance solder tail terminals and has a maximum operating current rating of 0.5 amps and an operating temperature range of -55°C to +105°C.

Materials

The ESQT-125-02-M-T-375 connector is designed with multiple materials which help to reinforce overall strength and flexibility. The materials used during the manufacturing process include nickel-plated brass, polyamide, and tinned phosphor bronze. The connector housings are made with nickel-plated brass for superior shielding and contact protection, while the mated pin contacts are made with aluminum alloy for increased electrical performance and Teflon insulation for insulation between contacts. The contact crimp is made of nickel-plated brass to ensure good electrical contact and reduce potential arcing.

Compatibility

The ESQT-125-02-M-T-375 is designed to be compatible with the QT series female mating connector, which is available in either a rear- or front-mounted configuration. The connectors are designed to mate with the proper conductors as indicated in the table below.

Working Principle

The ESQT-125-02-M-T-375 connector uses a snap-in design with mating of two independent connectors. When mating, the two halves are driven together by opposing forces from the terminals. This action extends the pins so that it is possible to reduce the contact gap and achieve high socketing strength, making it ideal for high vibration applications. The contact pins also feature a spring force which pushes the two halves together and ensures a reliable connection.

The connector also has LED illumination capabilities which include an illuminated pin indicator (LP) and an adjacent contact (CL). These features not only help to indicate the status of a connection but also reduce errors during assembly. The LP and CL pins are arranged to actuate when the connector is inserted into an opening receptacle or when the mated parts of the connector are properly aligned.

Conclusion

The ESQT-125-02-M-T-375 is a rectangular connector that is designed with multiple materials for strength and flexibility. It is compatible with the QT series female mating connector and helps to reduce potential arcing and contact protection. Moreover, it features LED illumination capabilities which make it easy to detect the status of a connection. All in all, it is an effective connector solution which is suitable for many applications including automotive, military, medical, industrial, and consumer installations.

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