Hand-wheel coupling Electromagnetic or mechanical unlocking; instant release by force. Application: JF2-256 umbilical electrical connector is used to connect and
automatically disconnect electrical circuit between aerospace
carrier system and ground equipments, as well as similar
circumstances that require automatic release. Operation Environment: Operating temperature: -40℃～85℃ Relative humidity: 90%～95% at 40±2℃ Operating air pressure: 101.33kPa～6.67Pa Sine vibration: 10～2000Hz, Acceleration 147m/s2 Shock: Acceleration 735m/s2 Centrifugal: Acceleration 245m/s2 Note: At mating state, the above three values of acceleration
should be reduced half. Radiation resistance: Electronic radiation: Energy 1MeV; accumulated flux 1015e/cm2 Proton radiation: Energy 6.8MeV;
accumulated flux 1013P/cm2 Main Technical Data: Contact Performance: Pin dia. | 1 | 2.2 | 4 | Current rating (A) | 5 | 10 | 20 | Contact resistance(m) | ≤10 | ≤5 | ≤5 | Contact number | 228 | 20 | 8 |
Insulation resistance: At standard air pressure | At high temperature | At humidity | At radiation | ≥1000M | ≥500M | ≥20M | ≥100M |
Withstanding voltage: At standard air pressure | AC 1000Vrms | At low air pressure | AC 200Vrms | At humidity | AC 500Vrms |
Mechanical separation force: 49N～196N Electromagnetic separation: DC 27±3V（wire winding
resistance 6～7） Separation time ≤0.2s Mechanical life: 300 cycles Applicable Standards: Q/Ag1.034-87 Technical Document for JF2-256 Umbilical Electrical
Connector. Type Designator: Designator | JF | 2 | A | - | 256 | T | D | Serial number | ① | ② | ③ | | ④ | ⑤ | ⑥ |
① Umbilical rectangular electrical connector ② Serial number of design ③ Class：A- with the function of shell-to-shell conductivity; no
sign- without this function ④ Number of contacts： 256 ⑤ Connector style: T-plug Z-receptacle ⑥ D-electromagnetic separation plug; no sign- manual
separation plug. Configuration and Installation Dimension: Contact Arrangement (from the view of receptacle mating face): Pin dia. | 1 | 2.2 | 4 | Sign | | | | Current rating （A） | 5 | 10 | 20 | Dia. Of Contact solder cup | 1.5 | 2.8 | 4.6 |
Product Specifications: The following product specifications are available:
JF2-256TD、JF2-256Z、JF2A-256TD、JF2A-256Z | 
