MD1-9PH004 is a microminiature Micro-D plastic shell rectangular connector designed for highly reliable, extremely small, lightweight applications requiring 9 contacts. The connector features .050" (1.27 mm) center spacing between contacts, pin-type contacts with gold-plated copper alloy material, and insulated solid or stranded wire termination (H-type). The shell is constructed from glass-filled diallyl phthalate thermoset plastic with excellent dielectric properties and operates reliably across a temperature range of -65°F to +257°F (-18°C to +125°C). This connector is ideal for aerospace, military, and high-density electronic applications where space constraints and reliability are critical, offering friction/jackscrew coupling and keystone-shaped shell polarization to ensure proper mating.