621-250-118-115 is a Series 621 plug connector featuring 25 contacts with a right-angle bend and ferrite filter design for EMI/RFI shielding. The connector incorporates a D-shaped mating outline for polarization, with pin and socket contact mating design using PC tail termination. Key specifications include a current rating of 5 amperes, contact resistance of 10 milliohms maximum, dielectric withstanding voltage of 1000 V AC rms, and operating temperature range from -55°C to +105°C. The connector utilizes brass plug contacts with gold plating over nickel for the mating area, phosphor bronze receptacle contacts, and a nickel-plated steel shell. With four-prong boardlock grounding for superior PCB retention and ferrite attenuation of 20 dB minimum at 30 MHz, 30 dB minimum at 50 MHz, and 50 dB at 100 MHz, this connector is ideal for RS-232 and RS-449 serial communication applications requiring robust EMI/RFI protection and reliable signal integrity.