Combination D-Subminiature connectors are a popular choice for a wide variety of applications. Combo D connectors offer signal, power, coax, and high voltage contacts mixed within a single connector package.
Combo D connectors are available in all six standard D-sub shell sizes and offer a multitude of contact variants. Legacy Combo D connectors use size20 contacts for signal level connections. However, this practice underutilizes the electrical capabilities of size 20 contacts and limits high density packaging options.
Positronic is introducing Combo D connectors with size 22 high density contacts for use with signal level connections. Also, along with standard size 8 power, coax and high voltage contacts, Positronic's CBDD series offers size 16 power contacts for low to midrange power applications. These new configurations allow increased density not previously achieved in combination connectors.
CBDD size 22 contacts have a contact resistance of 0.010 ohms for open entry design and 0.005 ohms for closed entry design. Closed entry contacts can also be used for low power requirements and are rated at 5 amps nominal.
Standard size 16 power contacts have a contact resistance of 0.016 ohms and are rated at 28 amperes per U.L. 1977. High conductivity options offering higher current ratings and lower contact resistance are available.