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Product Description
The J599Ⅲ Series Electrical Connector is designed in accordance with GJB599B / MIL-DTL-38999 Series III standards, providing high reliability and environmental resistance for aerospace, defense, naval, and industrial electronic systems.
Featuring five-key polarization, triple-start threaded coupling, and a variety of shell materials and platings, the connector ensures secure blind mating, excellent vibration resistance, and adaptability to harsh operating environments.
Optional airtight receptacles and multiple rear accessory configurations further enhance installation flexibility and system integration capability.
Key Features
- Compliant with GJB599B / MIL-DTL-38999 Series III interface
- Multiple shell materials and platings for different environments
- Five-key polarization, blind mating, and mis-mating prevention
- Triple-start threaded coupling for fast mating and anti-loosening performance
- Ceramic inserts and sleeves for precise and reliable electrical connection
- Various rear accessory and termination options available
- Optional airtight adapter receptacle to reduce cable constraints
Technical Specifications
Mechanical Performance
| Parameter | Specification |
| Mechanical life | 500 mating cycles |
| Impact | 3 ms half-sine wave, peak acceleration 300 G |
| Vibration (sine) | 60 G, with temperature cycling and simulated attachments (36 h) |
| Random vibration (high temperature) | 100 Hz–1000 Hz, PSD 1 G²/Hz, RMS 41.7 G |
| Random vibration (ambient) | 100 Hz–1000 Hz, PSD 5 G²/Hz, RMS 49.5 G |
Environmental Performance
| Parameter | Specification |
| Operating temperature range | KF: –65 °C to +200 °CW / MW: –65 °C to +175 °C |
| Sealing | Plug connector meets MIL-DTL-38999M low-pressure impregnation |
| Salt mist resistance | K: 500 h / F: 48 h / W: 500 h / MW: 192 h (acidic atmosphere) |
| Humidity | Per MIL-DTL-38999M, 10 cycles within 24 h |
| Fluid resistance | Fuels, coolants, solvents |
Electrical Performance
Withstanding Voltage
| Work Grade | M | N | I | II |
| Sea level (V) | 1300 | 1000 | 1800 | 2300 |
| 21,000 m altitude (V) | 800 | 600 | 1000 | 1000 |
Contact Resistance & Rated Current
| Contact Size | Wire Ø (mm) | Contact Resistance (mΩ) | Rated Current (A) |
| 22D | Φ0.76 | ≤12 | 5 |
| 20# | Φ1.00 | ≤5 | 7.5 |
| 16# | Φ1.60 | ≤2.5 | 13 |
| 12# | Φ2.40 | ≤1.5 | 23 |
| 10# | Φ3.15 | ≤1.0 | 40 |
Insulation & EMI Shielding
| Parameter | Specification |
| Insulation resistance | ≥5000 MΩ (500 VDC) |
| EMI shielding (100 MHz – 1 GHz) | ≥85 dB (F, W, MW) |
| EMI shielding (1 GHz – 10 GHz) | ≥65 dB (F), ≥50 dB (W, MW) |
