MIL-DTL-38999 IV series military circular connector
1. military standard MIL-DTL-38999K
2. bayonet coupling
MIL-DTL-38999 IV series military circular electrical connector
A. Brief Introduction
This series of connector complies with the military standard MIL-DTL-38999K (Chinese military standard GJB599).
B. Specification
1. Contact resistance and current rating:
Contact ID | Diameter (mm) | Resistance (mΩ) | Current (A) |
22D# | Φ 0.76 | ≤ 12 | 5.0 |
20# | Φ 1.00 | ≤ 5.0 | 7.5 |
16# | Φ 1.60 | ≤ 2.5 | 13.0 |
12# | Φ 2.40 | ≤ 1.5 | 23.0 |
2. EMI shielding:
At 10GHz: minimum attenuation 65dB(F)
At 10GHz: minimum attenuation 50dB(W)
At 1GHz: minimum attenuation 85dB(F and W)
3. Withstanding voltage (V)
Service rating | M | I | II | N |
Sea level | 1300 | 1800 | 2300 | 1000 |
21336m | 800 | 1000 | 1000 | 600 |
4. Insulation resistance:
At 500V, ≥ 5000MΩ
5. Electrical continuity between shells:
K class ≤ 5.0mΩ, W class ≤ 2.5mΩ, F class ≤ 1.0mΩ
6. Shell: Aluminum alloy, stainless steel or copper-alloy
7. Plating:
W Olive green cadmium plating
F Bright nickel plating
K Stainless steel passivated
8. Insulator: Thermo-set plastic
9. Grommet and seal: Silicon rubber
10. Contact: copper alloy with gold plated, crimp or PCB
11. Endurance: 500 cycles
12. Vibration:
Random vibration: At frequency: 100~1000Hz, density of power chart: 1G2/Hz
13. Shock: At 3 ms half sinusoid, peak value of acceleration: 300g
14. Operating temperature:
W class: -65oC ~ +175oC
K, F class: -65oC ~ +200oC
15. Salt spray: According to method from MIL-DTL-38999
F class 48h
W class 500h
K class 1000h
16. Relative humidity: 98% at 40oC
17. Operating height: ≤ 30480m