YF19A Type Circular Umbilical Connector

Push-pull coupling mating and threaded coupling mating.
Mechanical demating.
The mating is aligned by key to avoid mis-mating.
Its features resistant to high-intensity vibration and impact.
Widely used in strategic and tactical weapon systems, space launch systems, and between them and ground equipment.
Per Q/Ag1.171.1-2014

Shell	Stainless Steel
Shell Finishing	Polishing
Insulator	Thermoplastic Plastic
Interfacial Seal and Sealing Ring	Silicone Rubber
Contact	Tin Bronze
Mechanical Demating	150 N ~ 200 N
Mechanical Life	500 cycles
Sinusoidal Vibration	Frequency 10 ~ 2000 Hz, Acceleration 196 m/s²
Random Vibration	Total Acceleration RMS 23.1 G Power Spectral Density 0.4 g²/Hz
Shock	3 ms Half-sine Wave, Peak Acceleration 735 m/s²
Operating Temperature	-55℃ ~ +125℃
Salt Spray Test	48 h
Relative Humidity	At 40℃: 98%
Rain Test	5 mm/min
Flameproof	1600℃, 25 S

Normal Temperature	High Temperature	Humid and Heat	Rain Test
≥1500 mΩ	≥500 mΩ	≥20 mΩ	≥20 mΩ

Environmental Conditions	Normal Temperature	High Temperature	Humid and Heat	Low Pressure
Ordinary Contact	AC 1000 Vrms	AC 750 Vrms	AC 200 Vrms	AC 150 Vrms

YF19A how to order

Quality Grade

Plug Type

Feature

Part Number of Socket

Feature

J Grade

YF19A-30TJa

YF19A-30TJa2

YF19A-78TJa

YF19A-78TJa2

Dual-outlet Single-layer Plug

Dual-outlet Double-layer Plug

Three-outlet Single-layer Plug

Three-outlet Double-layer Plug

YF19A-30ZK

YF19A-78ZK

Double-layer Socket

YF19A Type Circular Umbilical Connector Contact Arrangement Plug Mating View 78 pin

Contact Type	Symbol	Contact Specifications	Contact Soldering Cup Diameter	Section Area	Solderable Area
Ordinary Contact		Φ0.77 mm	Φ1.1 mm	0.95 mm²	0.67 mm²
		Φ1.0 mm	Φ1.4 mm	1.54 mm²	1.08 mm²
		Φ1.6 mm	Φ2 mm	3.14 mm²	2.20 mm²