Over-Molding for D-Subminiature |
ISC Engineering
4351 Schaefer Ave.
Chino, CA, 91710
USA
Press release date: November 1, 2012
D-subminiature or D-sub is a common connector that derived its name from its D-shaped metal shield. The D shaped shield serves several purposes such as mechanical support, ensuring correct orientation and serving as a barrier to electromagnetic interference. The original design was invented by ITT Cannon in 1952 and has since been adopted by other connector manufacturers. The standard "normal density" connector has 2 rows with a pin count of 9,15,25,37 and 50. There is also a high density "HD" which has three rows of pins and double density with 4 rows of pins. There are also "combo" D-subs that integrate coaxial inserts or other special pins that are designed for high current and voltage. The most common way to hook up wire contacts is with solder cup or crimp and poke connections.
In addition to the various d-sub connector sizes and styles is the additional customization option of injection over-molding. Injection over-molding entails two main steps a premold and a final mold. The premold is an initial injection shot of polypropylene over the contacts and exposed wires which provides the assembly structure and durability. The final mold overlaps the premold and provides the final appearance and can incorporate logos and other specific details. The final mold can be done in various colors and resins depending on the customer specifications. A value added option that the final mold also provides in a strain relief section that minimizes the stress on the region that the connector and cable are joined and undergoes the most stress. Another benefit that over-molding can provide is specific orientation, which can minimize stress on a bent cable and can make a connection in a small area easier.
To view various d-sub over-mold designs visit overmoldtooling.com. To inquire about pricing and cable assembly options talk direct to a sales engineer at 909-203-1125.
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