MIL-DTL-38999 Series III Connector D38999/20WC35PN - 35-Pin Square Flange Receptacle with EMI Shielding
Price:
10$-150$
MOQ:
100pcs
Delivery Time:
2-9weeks
Brand:
HIGH WOOD
Product Description
MIL-DTL-38999 Series I, II, and III Connectors
The D38999/20WC35PN connector meets MIL-DTL-38999 Series III requirements, featuring triple-start threaded quick connection with anti-loose mechanism. Designed for harsh environments including sandstorm and damp conditions.
Key Features
- Compact size and lightweight design
- High-density contact configuration
- EMI/RFI shielding capabilities
- Removable crimp contacts
- Anti-oblique mating protection
- Fireproof shell construction
- Multiple coating options available
- High-strength vibration performance under elevated temperatures
Material Options
Shell materials: Aluminum alloy, naval brass, stainless steel, or composite materials
Ordering Information
| Component | Code | Description |
|---|---|---|
| Basic Series | D38999/ | MIL-DTL-38999 Series |
| Connector Type | 20 | Square flange receptacle |
| Finish | W | Olive green cadmium plating |
| Shell Size | B | Size 11 (B) |
| Contact Layout | 35 | 35-pin configuration |
| Contact Type | P | Crimp pin |
| Orientation | N | Normal orientation |
Product Images
Shell Dimensions
| Shell No. | A (max) | B (max) | C (max) | D Thread | E | F | G | H | J | d1 (min) | d2 (min) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 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)
At 10GHz: minimum attenuation 65dB (F)
At 10GHz: minimum attenuation 50dB (W)
Withstanding Voltage
| Service Rating | M | I | II | N |
|---|---|---|---|---|
| Sea Level | 1300V | 1800V | 2300V | 1000V |
| 21000m | 800V | 1000V | 1000V | 600V |
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
- Shell materials: Aluminum alloy, stainless steel, or copper-alloy
- Plating options: W class (olive green cadmium), K class (stainless steel passivated), F class (electroless nickel)
- Insulator: Thermo-set plastic
- Grommet and seal: Silicon rubber
- Contact material: Copper alloy with gold plating
- Endurance: 500 cycles
- Vibration: Sine 60g with temperature cycling (36 hours)
- Random vibration: 44.1 grms (high temp), 49.5 grms (ambient temp)
- Shock resistance: 300g peak acceleration at 3ms half sinusoid
Contact Retention Force
22D#: 45N, 20#: 67N, 16#: 111N, 12#: 111N, 10#: 111N, 8#: 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