Phoenix Contact COMBICON PTDA 3.5mm PCB Terminal Blocks. Angled PCB terminals with springcage double connection up to 2 x 2.5 mm ;sup>2 ;/sup>. Features and Benefits. Spring-cage double connection using direct plug-in method with a release button 5.0 mm pitch Large terminal block capacity with compact dimensions Plug with optional mechanical coding Attractive design for connection in the field of vision PCB terminal block and plug-in connector available