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Cadmium Plating 38999 Series Connector Signal Transmission D38999/20WC35SN

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Cadmium Plating 38999 Series Connector Signal Transmission D38999/20WC35SN

China Cadmium Plating 38999 Series Connector Signal Transmission D38999/20WC35SN supplier

Large Image :  Cadmium Plating 38999 Series Connector Signal Transmission D38999/20WC35SN

Product Details:

Place of Origin: Nanjing
Brand Name: KAIDA
Certification: AS9100, Military Standard System Certification
Model Number: D38999/20WC35SN

Payment & Shipping Terms:

Minimum Order Quantity: 100pcs
Price: USD 10-50 $
Packaging Details: Standard packing
Delivery Time: 10 days
Payment Terms: T/T, Western Union
Supply Ability: 1000pcs per week
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Detailed Product Description
Material: Aluminium Alloy Plating: Cadmium
Waterproof: IP68 Contacts: Crimp
Salt Spray Test: 500hours Usage Scenario: Light Weight, High Reliability,Signal Transmission, Anti-corrosion
Construction: Kaida's J
High Light:

mil 38999 circular connectors


circle wire connector

Datasheet download:

MIL-DTL-38999 Series III Connectors.pdf

MIL-DTL-38999 backshell.pdf


MIL-DTL-38999 Series III Circular Connector. D38999/20WC35SN Light weight, high reliability,Signal transmission,


Part number:D38999/20WC35SN


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.

    D38999/ 20 W B 35 P N
Basic series              
Type of connector          
20 = Square flange receptacle          
24 = Jam nut receptacle          
26 = Shielding plug          
W = Olive green cadmium plating        
F = Electroless nickel plating        
T = Marine Bronze (copper aluminium alloy)        

K = Stainless steel passivated

L = Black anodized

J = Composite material + W

M = Composite material + F

Shell size      
09 (A), 11 (B), 13 (C), 15 (D), 17 (E), 19 (F), 21 (G), 23 (H), 25 (J)      
Contact layout (See below)    
Type of contact  
P = Crimp pin  
S = Crimp socket  
PL = Long PCB pin  
PC = Short PCB pin  
SL = Long PCB socket  
SC = Short PCB socket  
N = Normal
A, B, C, D = Alternative


Cadmium Plating 38999 Series Connector Signal Transmission D38999/20WC35SN 0

Cadmium Plating 38999 Series Connector Signal Transmission D38999/20WC35SN 1Cadmium Plating 38999 Series Connector Signal Transmission D38999/20WC35SN 2


Contact resistance and current rating:

Contact ID Diameter (mm) Resistance (mΩ) Current (A)
22D# Φ 0.76 ≤ 12.0 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
10# Φ 3.15 ≤ 1.0 40.0


EMI shielding:

At 1GHz: minimum attenuation 85dB (F and W)

At 10GHz: minimum attenuation 65dB (F)

At 10GHz: minimum attenuation 50dB (W)


Withstanding voltage (V):

Service rating M I II N
Sea level 1300 1800 2300 1000
21000m 800 1000 1000 600


Insulation resistance:

Normal ≥ 5000 MΩ, damp heat ≥ 100 MΩ

Electrical continuity between shells:

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









Shell: Aluminum alloy, stainless steel or copper-alloy


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

Contact: Copper alloy with gold plated

Endurance: 500 cycles


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 retention:

22D#, 45N 20#, 67N 16#, 111N 12#, 111N 10#, 111N 8#, 111N



Operating temperature:

W class: -65 oC ~ +175 oC J class: -65 oC ~ +175 oC M class: -65 oC ~ +200 oC

K, F class: -65 oC ~ +200 oC

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

F class: 48h W class: 500h K class: 1000h

Salt spray: According to method from MIL-DTL-38999 2000h

Seal: Comply with the request of MIL-DTL-38999K low-pressure immersion.

Damp heat: 10 cycles in 24 hours according to MIL-DTL-38999K

Fluid resistant: Various fuels, coolant and solvent

Contact Details

Contact Person: Joanna

Tel: 15256538650

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