242A28990X Datasheet/PDFD-Sub Connectors
D-sub connectors are extremely versatile, allowing for a variety of options to perfectly suit almost any application. Composed of typically two or more shells that connect together with the use of a mating insertion device, they typically employ rows of male and female contacts respectively to provide for a wide range of applications. The variety of options is further enhanced with a range of mounting and contact arrangements.One such connector commonly-used worldwide is the 242A or 28990X range. It is available in 15, 25, 37, and 50 contact positions, making it an incredibly versatile range that can suit almost any application. Let\'s take a look at the application field and working principle of the 242A28990X.
Application Field
The 242A28990X range of D-Sub connectors has a range of typical applications across a broad range of industries, including test and instrumentation, telecoms, medical, military, and production equipment. Within these fields, one of the most common applications is in the area of data transmission, with its broad ranging signal capability. It also often finds its way into the production of computers, where its highly reliable and robust performance characteristics, including EMI/RFI screening, are extremely useful.
Working Principle
The working principle behind the 242A28990X is simple yet effective. It consists of primarily two shells, namely the mating shell and the rear shell, both made from non-magnetic material, which lock together via a removable mating feature known as the \'spoon\'. This allows for the secure transmission of signals from one shell to the other. The shells are usually constructed of a strong metal alloy, making them highly resistant to abrasion.
The shells themselves contain the contacts, of either male or female style, arranged in rows and positioned for mating insertion. Generally these contacts are made from a gold alloy, however, depending on the application, other materials such as silver, copper, aluminum, or bronze can be employed. These different contact materials allow for the creation of signals with a range of power requirements, such as the TTL signals for data transfer.
The contacts inside the shells are held securely in place by the \'spoon\' mechanism, which is actually engaged by a locking arm to ensure the contact is held securely in the rear shell during mating. This also has the benefit of ensuring the contact is disengaged before insertion of a new one. The locking arm is adjustable, allowing for service and repairs to be carried out with precision.
Conclusion
In conclusion, the 242A28990X range of D-Sub connectors is an incredibly versatile and reliable range, allowing for a host of options to suit almost any application. Its sturdy construction and precise mating mechanism provide a secure and reliable transmission of signals, making it an attractive choice for data transfer and other applications. It is extremely easy to use and highly reliable, making it a favourite amongst engineers, technicians, and hobbyists.