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MIL-DTL-38999 IV series military circular electrical connector
MIL-DTL-38999 IV series military circular electrical connector

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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

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