DF3E-4P-2H(20)

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Rectangular connectors, such as header configurations with male pins, are commonly used in electronic applications to provide a secure connection that minimizes the effects of vibration or shock, to allow for mating and unmating in situations with limited access, or to support multiple contact points between two boards for all kinds of applications.

DF3E-4P-2H (20) is one such example. It is part of the MHV series of V-grooved press-fit male headers from AMP, particularly suited for applications in which an extra strong joint and non-contact mating is required. The DF3E-4P-2H (20) has a compact design with B-type headers, DDT contacts, and a current carrying rating of 20A.

Application Field

DF3E-4P-2H (20) is suited for applications in the telecommunication, instrumentation, power supply, defense, automotive, and medical industries, to name a few. Its expansive application field is due in part to its press-fit connection, which does not require mechanical fastening, solder, tooling, adhesive, or operator skill, and can be fitted in hard-to-reach places. It is also used in high-frequency and harsh environmental applications due to its vibration and shock-resistant nature.

Working Principle

DF3E-4P-2H (20) headers use the insertion force principle, where metal contacts in the female and male headers are connected via a locking force. The B-type female headers are composed of metal rear housing and a set of insulation plates, and the spring arms plate, all of which are firmly fitted together. The contacts are then assembled, and the zinc alloy retainer is pushed into place, securely locking them in place.

The male header contacts have soft metal components and are inserted into the female contacts, connecting them with the corresponding V-shaped grooves. To ensure an optimal connection, the housing should be designed with the appropriate dimensions and geometrical tolerances to ensure a snug fit. Once joined, the contacts are held firmly together by the locking force.

DF3E-4P-2H (20) connection systems are designed to withstand stringent performance requirements, and are tested to ensure their reliability and conform to the highest safety standards. The highly durable press-fit connectors are ideal for use in high-powered, vibration-sensitive applications.

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