T3507320U is an M16 D circular DIN connector from Amphenol's signalmate® C091 family, engineered for demanding wireless infrastructure and harsh environment applications. The connector features a metal screw coupling system with IP65/67/69K environmental protection rating when mated, thermoplastic dielectric material, and 360° shielding capability for excellent EMI protection. It supports 2 through 8, 12, and 14 position configurations with current ratings of 2–3 positions at 10A, 5–8 positions at 7A, and 12–14 positions at 3A at +40°C, operating across a temperature range of -40°C to +100°C. The connector features silver/gold contact plating with solder and crimp termination options, supporting AWG 18 through 28 wire gauges, and demonstrates superior corrosion resistance with 720 hours salt spray rating per AISG C-485 standard. This connector is widely used in 4G/5G mobile radio networks, antenna systems, and outdoor measurement equipment where durability, system coupling integrity, and environmental resilience are critical.