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ID-Slide4

Selection criteria for IDCs includes polarization and contact identification, strain relief, and reusable covers. Where there are many electrical circuit connection possibilities, contact identification is desirable. CW includes numbered contacts on most connectors. An inherent part of the CW system is a positive means of polarizing mating pairs of IDCs, or positively orienting the connector to the PC board, thereby preventing cross wiring and possible equipment damage. Standardization is attained by using polarization and identification methods consistent with Mil-DTL-83503 specifications. A good test of the strength of a cable and connector is a pull test. In TORQ-TITE™ D-subminiature and card edge connectors, strain reliefs are built-in. In DIPs, PCBs and sockets, an optional strain relief may be required for additional protection. CW's strain relief designs effectively isolate the connection of cable-to-contact from mechanical strain even if the cable is pulled or yanked. CW strain reliefs require limited space, are easy to apply, are available in several options for alternate cable orientation, and are capable of withstanding a minimum pull-off force of 8 ounces per contact, consistent with Mil-DTL-83503 standards. The ability to remove the connector cover without breakage is often desirable. Most CW designs make it possible to easily, safely and non-destructively remove the cover that protects the connection. The connector, and often the cover itself, are reusable.

PTM Published on: 2012-02-01