As for special D-Sub connector there are plenty of them and the possibilities with D-Sub seems to be endless.
We have Dual D-Sub where we can mix different types of D-Sub in a stacked layout, here the limitations comes to the shell size, same shell size is to prefer when stacking two D-Sub connector on each other.
Filter D-Sub is an area where there are many combinations that can be made, Konmek uses PCB with capacitors inside the connector and this pcb are insulated by sealing compound like epoxy. Our capacitor values range from 100pF - 6800pF.
Currently we can make Filtered versions of Standard Density and High Density connectors
Contact service for more details.