T3478000U is an M16 D circular DIN connector from Amphenol's signalmate® C091 family, designed for industrial applications requiring robust environmental protection and EMI shielding. The connector features a metal screw coupling system, thermoplastic dielectric material, and silver/gold contact plating, with support for 2 through 8, 12, and 14 position configurations. It provides IP65/67/69K protection when mated and operates across a temperature range of -40°C to +100°C, with operating voltage up to 300V per IEC 60664-1 standard. The connector supports solder and crimp termination options with wire gauges from 18 to 28 AWG, and achieves excellent insulation resistance greater than 10¹² O and contact resistance less than 5 mO. This connector is ideal for measuring instruments, equipment, and 4G/5G mobile radio networks where reliable power and signal connections with superior EMI shielding are essential.