Phoenix Contact 1769421 PCB headers have a nominal cross-sectional area of 2.5 mm² and are typically green in color. They can carry a maximum current of 12 A and are rated for up to 320 V. These headers feature a Sn contact surface and use a pin connection type with 21 pins arranged in a linear pattern, each connected to one of the 21 potential pins. The headers are designed for wave soldering mounting, have a pitch of 5 mm, and are part of the SMSTB 2,5/..-G product range. They include features such as standard connector alignment and a plug-in system based on the COMBICON MSTB 2,5 configuration, with no locking mechanism and packaged in cardboard.