641219-2 is an MTA-156 posted connector header designed for reliable interconnection on printed circuit boards. It features gold-plated contacts with a finish of 0.00030 inches [0.00076 mm] minimum gold over 0.00050 inches [0.00127 mm] minimum nickel, ensuring excellent corrosion resistance and low contact resistance. The header utilizes a UL 94V-0 rated thermoplastic housing in black and phosphor bronze boardlock elements, tin-plated to 0.000100 inches [0.000254 mm] minimum over nickel. With a 0.156 inch [3.96 mm] centerline spacing and square posts of 0.045 inches [1.14 mm], this connector is compatible with standard MTA-156 mating connectors as defined in the compatibility matrix. The product is ideal for applications requiring robust, high-reliability interconnections in industrial and commercial electronic equipment.