38999 Series II Military connector 27497 27473 series female and male bayonet cable connector

Specification

Detailed Pictures

Contact layout

D38999 III series General Description

This series of round connectors, compliant with MIL-DTL-38999 III series requirements,
adopt Triple-start threaded quick connection, with an anti-loose mechanism, featuring small size,
light weight, high-density contacts, EMI/RFI shielding, removable crimp contacts, and anti oblique-mating;

This product has a fireproof shell, a variety of coatings, and vibration performance of high strength under high temperature, suitable for use in harsh sandstorm and damp circumstances.
With quick connection, anti-loose mechanism, EMI/RFI shielding, interface sealing, anti oblique-mating design, the material of shell is optional in aluminum-alloy, naval brass, stainless steel or composite.

Mechanical:

Shell: Aluminum alloy, stainless steel or copper-alloy

Plating:

W class: Olive green cadmium plating

K class: Stainless steel passivated

F class: Electroless nickel plating

Insulator: Thermo-set plastic

Grommet and seal: Silicon rubber

Contactor: Copper alloy with gold plated

Endurance: 500 cycles

Vibration:

Sine: 60g, with temperature cycling and simulated accessory (36 hours)

Random: 44.1 grms in high temperature/ 49.5 grms in ambient temperature

Shock: At 3 ms half sinusoid, peak value of acceleration: 300g

Contact resistance and current rating

Contact legend

Electrical continuity between shells:

W class ≤ 2.5 mΩ, F class ≤ 1.0 mΩ, K class ≤ 5.0 mΩ

EMI Shielding

100MHz~1GHz: minimum attenuation 85dB 

1GHz~100GHz: minimum attenuation 90dB

Withstanding Voltage (V) 

Insulation resistance:

 At 500Vdc, ≥ 5000MΩ

Operating temperature:

W, J class: -65℃~ +175℃

M, K, F class: -65℃~ +200℃

Salt spray:

F class: 48h

W class: 500h

K class:1000h

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