D-type connectors, as a large category of connectors, are currently mainly used in communication ports of computers. In addition, D-type connectors have two or more parallel contact rows and are surrounded by D-shaped metal frames. The D-type connector was designed by ITTCannon in 1952. The D-type connector is also divided into male and female connectors. Its pin numbers can be obtained from 9-pin to 25-pin contacts. This article mainly introduces you to the international standard definition of D-type connectors!
D-type connector The standard specifications of the D-type connector are defined by the international standards IEC 60807-3 / DIN 41652, and four different types of standard connectors are defined according to the IEC standard. The difference between these connectors is the housing size and the number of pins. They are named DA, DB, DC, DD and DE connectors, followed by their pin numbers.
For example, the 15-pin standard A connector is named DA-15, the 25-pin standard B connector is named DB-25, the 37-pin C standard connector is named DC-37, and the 50-pin D standard connector is named DD-50 and The recently released 9-pin E standard connector is the DE-9 connector. Many connector manufacturers call the DE-9 connector DB-9 because it replaces the DB-25 connector on the computer's RS232 port.
After reading the above, I believe everyone should understand the international standard definition of the D-type connector.
