DF17A(4.0)-20DS-0.5V(51)

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Rectangular connectors used for arrays, edge type, mezzanine (board-to-board) applications must exhibit reliable mating with low resistance and low cross talk. The DF17A (4.0)-20DS-0.5V (51) series, such as the DF17A(4.0)P-20DS-0.5V(51) are practical and cost-effective solutions when trying to achieve the desired level of reliability, performance and design flexibility.

Construction

These rectangular connectors typically consist of a plastic enclosure, contacts, and internal metal parts. The outer frame of the connector is made of a combination of nylon and gold plated contacts. It is molded in one piece and designed to absorb shock and force, making it durable and reliable over a long period of time. The gold plated contacts are designed to provide a low resistance electrical connection in order to reduce signal noise. To ensure a reliable connection, a robust positive locking system is used to ensure a firm mating force. The contacts themselves can be configured to accommodate a variety of applications, from single pin to multiple contacts.

Polarisation

The DF17A series rectangular connectors have a polarised design that helps to prevent wrong mating. The connector incorporates two ramps along the mating edge of the connectors. When the two parts are mated, a positive locking force is created due to the ramps adhering to each other. This helps to prevent wrong insertion of the male and female connectors.

Contacts

The DF17A series connectors use B-type contacts which provide a low resistance electrical connection. The female contacts are inserted into the connectors and held in place by outer strain relief. The male contacts are affixed to the mating part and help to guide the insertion of the connector.

Applications

The DF17A (4.0)-20DS-0.5V (51) rectangular connectors are frequently used in arrays, edge type, and mezzanine (board-to-board) applications. This connector is commonly used in the medical, automotive and aerospace industries to connect printed circuit boards, backplanes, and other components together. The connector is also suitable for data and signal transmissions, such as Ethernet and USB.

Working Principle

The DF17A (4.0)-20DS-0.5V (51) connector works by establishing an electrical connection through a B-type contact. The two parts, male and female, are mated and held together by the positive locking system. The contacts are aligned for a reliable connection between the mating parts, and a low resistance current path is created. The connector then provides a low resistance and low cross talk connection suitable for data or signal transmissions.

Conclusion

The DF17A (4.0)-20DS-0.5V (51) series is a compact, cost-effective and reliable connector solution suitable for arrays, edge type, and board-to-board applications. The connector has a durable construction, low resistance contacts, and a positive locking system to ensure a reliable connection. It is commonly used in the medical, automotive, and aerospace industries and is suitable for data and signal transmissions.

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