MIL-DTL-38999 Series III Circular Connector D38999/20WD35PN - 20.90mm Shell, 500 Mating Cycles, EMI/RFI Shielding
Price:
10$-150$
MOQ:
100pcs
Delivery Time:
2-9weeks
Brand:
HIGH WOOD
Product Description
MIL-DTL-38999 Series III Connector Overview
Model: D38999/20WD35PN
This military-grade circular connector meets MIL-DTL-38999 Series III specifications, designed for demanding applications in harsh environments including sandstorms and high humidity conditions.
Key Features
- Triple-start threaded quick connection with anti-loose mechanism
- Compact design with small size and light weight
- High-density contact configuration
- EMI/RFI shielding for electromagnetic protection
- Removable crimp contacts for easy maintenance
- Anti-oblique mating capability
- Fireproof shell construction
- Multiple coating options available
- High-strength vibration performance under elevated temperatures
Ordering Information
D38999/ | 20 | W | B | 35 | P | N
| Component | Code | Description |
|---|---|---|
| Basic Series | D38999/ | Military connector series |
| Connector Type | 20 | Square flange receptacle |
| Finish | W | Olive green cadmium plating |
| Shell Size | B | Size 11 (20.90mm max diameter) |
| Contact Layout | 35 | Specific pin configuration |
| Contact Type | P | Crimp pin |
| Orientation | N | Normal orientation |
Product Images
Shell Dimensions
| Shell No. | A (max) mm | B (max) mm | C (max) mm | D Thread | E mm | F mm | G mm | H mm | J mm | d1 (min) mm | d2 (min) mm |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 09 | 20.90 | 10.60 | 2.50 | M12*1-6g | 23.80 | 18.26 | 15.09 | 3.25 | 5.49 | 16.66 | 13.11 |
| 11 | 20.90 | 10.60 | 2.50 | M15*1-6g | 26.20 | 20.62 | 18.26 | 3.25 | 4.93 | 20.22 | 15.88 |
| 13 | 20.90 | 10.60 | 2.50 | M18*1-6g | 28.60 | 23.01 | 20.62 | 3.25 | 4.93 | 23.42 | 19.05 |
| 15 | 20.90 | 10.60 | 2.50 | M22*1-6g | 31.00 | 24.61 | 23.01 | 3.25 | 4.39 | 26.59 | 23.01 |
| 17 | 20.90 | 10.60 | 2.50 | M25*1-6g | 33.30 | 26.97 | 24.61 | 3.25 | 4.93 | 30.96 | 25.81 |
| 19 | 20.90 | 10.60 | 2.50 | M28*1-6g | 36.50 | 29.36 | 26.97 | 3.25 | 4.93 | 32.94 | 28.98 |
| 21 | 20.10 | 11.40 | 3.20 | M31*1-6g | 39.70 | 31.75 | 29.36 | 3.25 | 4.93 | 36.12 | 32.16 |
| 23 | 20.10 | 11.40 | 3.20 | M34*1-6g | 42.90 | 34.93 | 31.75 | 3.91 | 6.15 | 39.29 | 34.93 |
| 25 | 20.10 | 11.40 | 3.20 | M37*1-6g | 46.00 | 38.10 | 34.93 | 3.91 | 6.15 | 42.47 | 37.69 |
Electrical Specifications
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 Performance
- At 1GHz: minimum attenuation 85dB (F and W finishes)
- At 10GHz: minimum attenuation 65dB (F finish)
- At 10GHz: minimum attenuation 50dB (W finish)
Withstanding Voltage
| Service Rating | M (V) | I (V) | II (V) | N (V) |
|---|---|---|---|---|
| Sea Level | 1300 | 1800 | 2300 | |
| 21000m | 800 | 1000 | 1000 |
Insulation Resistance
- Normal conditions: ≥ 5000 MΩ
- Damp heat conditions: ≥ 100 MΩ
Electrical Continuity Between Shells
- W class: ≤ 2.5 mΩ
- F class: ≤ 1.0 mΩ
- K class: ≤ 5.0 mΩ
Mechanical Specifications
Materials and Construction
- Shell: Aluminum alloy, stainless steel, or copper-alloy
- Plating Options:
- 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 plating
Performance Characteristics
- Endurance: 500 mating cycles
- Vibration:
- Sine: 60g with temperature cycling (36 hours)
- Random: 44.1 grms in high temperature, 49.5 grms in ambient temperature
- Shock: 300g peak acceleration at 3 ms half sinusoid
Contact Retention Force
- 22D#: 45N
- 20#: 67N
- 16#: 111N
- 12#: 111N
- 10#: 111N
Technical Diagrams
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Company
High Wood Technology Development Co., Ltd
Location
No.5001,Dongji Building B, No.1 Dongji Avenue, Jiangning, Nanjing, China
Contact Person
Mike Huang