Other Circular Connectors | YQ3 / YQ3A / YQ3B (GJB2889)

YQ3 Series Circular Connector

The YQ3 series is a bayonet-coupling circular connector compliant with GJB2889 and fully interchangeable with domestic XC-series products. Three termination variants are available — YQ3 solder, YQ3A crimp and YQ3B PCB — in plug, square-flange receptacle and jam-nut receptacle body styles. Nine shell sizes cover 1 to 62 contacts in 30 contact arrangements, with a range of backshell accessories. IP67 sealing, ≤1 μs discontinuity under vibration and a 500-cycle mechanical life suit aviation, aerospace, telecom, marine and instrument applications.

Key Specifications

Standard GJB2889

Shell Sizes 9 (14-39)

Sealing IP67

Executive Standard	GJB2889 (interchangeable with XC series)
Series Variants	YQ3 solder / YQ3A crimp / YQ3B PCB
Body Types	F square flange receptacle / L jam-nut receptacle / T plug
Shell Sizes	14, 18, 22, 24, 27, 30, 33, 36, 39
Contact Arrangements	30 arrangements, 1–62 contacts
Contact Gender	Z1 / Z pins (gold / silver); K1 / K sockets (gold / silver)
Rated Voltage	500 V at sea level; 250 V at 21,336 m
Dielectric Withstanding Voltage	1500 V at sea level; 300 V at low pressure
Insulation Resistance	5000 MΩ normal / 500 MΩ at high temperature / 100 MΩ damp heat
Operating Temperature	−55 °C to +125 °C
Relative Humidity	90–95% at 40 ± 2 °C
Working Pressure	4.39–101.33 kPa
Vibration	10–2000 Hz, 196 m/s², discontinuity ≤ 1 µs
Shock	980 m/s², discontinuity ≤ 1 µs
Salt Spray	48 h in 5% NaCl mist
Sealing	IP67
Mechanical Endurance	500 mating cycles