MIL-DTL-38999 Series II Connectors Datasheets

MIL-DTL-38999 Series II Connectors Datasheets and Specifications
Circular Connector (Military Connector)

Amphenol & Souriau Compatible MIL-DTL-38999 series II circular connector features a quick bayonet coupling system, with both solder and removable crimp contacts. It ensures reliable EMI/RFI shielding, high contact density, and a compact, lightweight design with a short shell for enhanced portability. Engineered for hermetic sealing when mated, this connector is available in three shell material options, nine shell sizes, three finish variants, two plug types, five receptacle mounting styles, four contact configurations, and over 50 contact layout options.

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MIL-DTL-38999 Series II Connectors Datasheets
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    MIL-DTL-38999 Series II

    Part number

    MS     27513     T     18     C     35     P     N

    Basic series

    Type of connector

         27473 = Plug 

         27472 = Wall mounting square receptacle, front 

         27497 = Wall mounting square receptacle, rear 

         27513 = Box square receptacle, front 

         27508 = Box square receptacle, rear 

         27474 = Jam nut receptacle 

         27484 = Shielded plug

    Shell 

         T = With thread and accessory 

         E = Without thread or accessory 

    Shell size 

         08, 10, 12, 14, 16, 18, 20, 22, 24 

    Finish 

         B = Olive green cadmium plating

         C = Black anodized 

         E = Passivated stainless steel

         F = Electroless nickel plating 

    Contact layout (See below) 

    Type of contact 

         P = Crimp pin 

         S = Crimp socket 

         PH = Solder pin 

         SH = Solder socket 

         PL = Long PCB pin 

         PC = Short PCB pin 

         SL = Long PCB socket 

         SC = Short PCB socket 

    Orientation

         N = Normal 

         A, B, C, D = Alternative

    Electrical

         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

    EMI shielding: 

         100MHz~1GHz: minimum attenuation 85 dB 

         1GHz~10GHz: minimum attenuation 50 dB

    Withstanding voltage (V):

    Service rating M I II
    Sea level 1300 1800 2300
    21000m 800 1000 1000

    Insulation resistance:

         Normal ≥ 5000MΩ, damp heat ≥ 100MΩ 

    Electrical continuity between shells:

         ClassE ≤ 5.0mΩ, ClassB ≤ 2.5mΩ, ClassF ≤ 1.0mΩ

    Mechanical  

    Shell: Aluminum alloy, stainless steel or copper-alloy

    Plating: 

         Class B : Olive green cadmium plating 

         Class C : Black anodized 

         Class E : Stainless steel passivated 

         Class F : Electroless nickel plating

    Insulator: Thermo-set plastic 

    Grommet and seal: Silicon rubber

    Contact: Copper alloy with gold plated, 

    Endurance: 500 cycles 

    Vibration: Random vibration: at frequency: 100 ~ 1000 Hz, density of power chart: 1 G 2 /Hz 

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

    Environmental 

    Operating temperature: 

    Class B: -65 oC ~ +175oC  

    Class C, E, F : -65oC ~ +200oC

    Salt spray: According to method from MIL-DTL-38999  

    Class F 48h 

    Class C 96h 

    Class B 500h 

    Class E 1000h 

    Relative humidity: 98 % at 40 oC  

    Operating height: ≤ 30480m

    Contact layout






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