MDR Connector

The Mini D Ribbon (MDR) connector is a common type of electrical connector for a variety of applications, such as in computer and telecommunications equipment having many contacts.

MDR connectors
MDR connectors

The connector contains two parallel rows of contacts within a shielded case having a characteristic D-shape similar to that used in D-subminiature connectors. The contacts are not pins, but small flat bands of metal, called ribbon contacts. The connectors are manufactured in many capacities, including 14-, 24-, 36-, 50-, 64-, and 100- pin varieties. They may be mounted on boards, panels, or may terminate cables. Wires are attached by means of solder, crimping or insulation displacement. Female connectors have bail locks for a sturdy connection to the male connector. Screws may also be employed to secure connections.

Usually the female connector mounted on the host or device is called the "receptacle", and the male connector attached to the cable is called the "plug".

The MDR connector is seen on newer Tektronix test equipment like the RSA Series Spectrum Analyzers RSA3408, RSA5103, RSA5106, RSA5115, RSA5126, RSA6106, RSA6114, RSA6120, and CTRL7100A.