D-SUB-connector is known to almost every user of a personal computer. It is designed to connect a PC or laptop to monitors, TVs, etc. A D-SUB connector (the second name is VGA) was present on all computer video cards, but recently it has been replaced by a new standard - DVI interface. Nevertheless, this type is still common in the "old iron" stuffing.
Interface Description
D-SUB-connector contains a block with pin contacts located in two, three or four rows. The number of conclusions in the first row is one more than in the second. The contacts are protected by a special metal casing, the profile of which resembles the shape of the letter D. This eliminates the possibility of incorrect connection of the connector.
The connectors of this series (both the socket and the plug) can have a different number of contacts:
- The number of pins in standard density connectors varies from 9 to 50 units.
- High density products contain from 15 to 78 contacts.
- Hybrid devices (enlarged pins) can consist of 3-43 pins.
Typically, D-SUB connectors (to ensure a reliable connection) undergo additional processing. So, the contacts of this device can be covered with gilding or tin (tinning). This interface is installed on the unit, board or cable. In the latter case, different types of cases are used. Such connectors are widely used for data transfer in many interfaces, as well as for supplying power to various devices.
D-SUB connector: classification
- DB - for soldering. The connector is mounted on the cable by soldering. They come in high and normal density.
- DC - crimp. The contacts are pre-crimped on the cable, and then inserted into the body block using a special tool.
- DI - ribbon cable. The connector is punctured in 1.27 mm increments on the cable. The density of the device is increased and normal.
- DBI - for faster installation. The cable cores are laid out on the contacts of the connector, which has the shape of a dovetail, and clamped with a special insert (included in the connector kit). For the installation of such a product, a specialized tool is used.
- DBC - hybrid (enlarged contacts). In a single housing are signal (from 4 to 1) and power (from 1 to 8) conclusions. This connector allows you to save space in the device when you need to use different types of signals. These connectors are mounted on the board by soldering. The D-SUB (VGA) connector may have a different arrangement on the circuit. In this regard, the following device types are distinguished:
- DRB - horizontal (right angle). There are three modifications: A = 7.2 mm, B = 9.4 mm, C = 13.8 mm. These values correspond to the distance from the edge of the connector to the first row of contacts.
- DBB - vertical. On the inside of the connector are cylindrical leads that are soldered into the board.
- DRN - paired (combined). They are a single unit, which consists of 2 or 3 D-SUB connectors with a different number of pins. The compact size of the connector saves space on printed circuit boards.
D-SUB MIL-C Connectors
This type of connector is intended for use in military equipment. Such connectors are considered power, they can be mounted on cables of various sizes. There are modifications with replaceable crimp terminals. The connectors in this series are more stringent requirements for technical specifications. They have a very durable case, resistant to environmental influences. These devices meet high reliability requirements, but their application is very limited due to the high cost.