Contact system for high density rectangular connectors

Positronic's new high density rectangular line is designed to offer industrial performance and conformance to MIL-C-28748 and MIL-DTL-28748, with size 22 contacts in superior density contact configurations from 4 to 104 contacts.

The rectangular line, composed of SGM, SGMC, and SMPL series, now features PosiBand contact technology developed exclusively by Positronic. According to the company, this design is more robust than legacy split tine female contacts, which can be pried open resulting in reduced normal force and degradation of electrical performance. The PosiBand is a closed entry female contact system which is designed to provide a low contact resistance of 0.004ohms, while offering higher current ratings. According to the company, crimp termination contacts require no annealing of the crimp barrels, eliminating the concern of unintentionally heat treating the mating end, which can cause electrical failure. This contact design has received SAE AS39029 qualification. Termination options include removable crimp and solder cup, as well as straight, right angle and pressfit pcb terminations. Rectangular connectors can also be supplied with thermocouple contacts. A variety of hardware types are available, including jackscrews, quick disconnect locking device, polarising guides, cable adapters and panel mounting options. Positronic claims these options allow for both keying and polarising connector systems.