It uses a 4.00mm pitch and row spacing, with a shrouded 4-wall design and a locking ramp fastening system to keep the mating connector secure under vibration. The sealed construction and mounting flange suit it for locations where moisture, dust, or washdown is expected — think engine compartments, outdoor panels, and factory floor equipment.
Mating connector and termination details
This header mates with the AMPSEAL 23-position receptacle (typically part number 776272-4 or similar). Termination is through-hole solder to the PCB. The header mounts to the panel via the integral flange, which takes the strain off the solder joints when the cable is pulled or routed. Contact finish is tin on the mating face, rated for the duty cycle typical of sealed automotive connectors — not for high-cycle field-service reconnect, but reliable for the mating cycles the harness sees in its service life.
Current, voltage, and wire gauge considerations
At 250VAC, the voltage rating is consistent with automotive auxiliary circuits and industrial control signals. The brass contacts with tin plating carry the signal; for higher current, select the appropriate wire gauge and confirm the derating at the operating temperature.
How the gray 776228-4 differs from its siblings
Within the 776228 base number, the -4 suffix denotes a gray insulation color. The -1 variant is black and the -5 is blue — all other specs (23 positions, 4.00mm pitch, sealed, tin contacts) are identical. If your harness color-coding or panel labeling requires a specific housing color, the -4 gray is the option for neutral identification. The 776262-4 is a 14-position version of the same sealed header family, also gray. If your circuit count is lower, the 14-position saves board space and reduces cost; the 23-position is the full-populated option for maximum signal density in the AMPSEAL footprint.