D38999-20WB99PN Ruggedized Circular Vibration Resistant Connector

GJB599 Series III (MIL-DTL-38999 Series III) electrical connector

Product Introduction

• Complies with GJB599B (MIL-DTL-38999M)Series III standard
• Three-head threaded quick connector with anti-loosening mechanism
• Small in volume, light in weight, and high in contact pair density
• Possesses electromagnetic shielding functionality
• The contact pieces are detachably crimped, and the pins are designed to prevent oblique insertion.
• It exhibits high-strength vibration characteristics at elevated temperatures, making it suitable for use in harsh sandy and humid environments.
• The hole positions for 12#and 16#contact piece specifications are suitable for installing optical fiber contacts.
• 12#,10#, The hole positions for the contact specifications allow for the assembly of coaxial and shielded contacts.

Purpose: The product is used for circuit signal connections.

Operating Environment: The product is designed for complex environments with strong vibrations, rain exposure, wind and sand, and high humidity

Basic Mechanical Design Feature

Mechanical Behavior

Materials: Shell: Aluminum alloy, stainless steel, titanium alloy

Insulator: Thermosetting plastic or thermoplastic Sealing body and seal ring: Silicone rubber

Coating: W Class: Cadmium-plated mili-tary green

F Class: Chemical nickel plating

Class K: Stainless steel passivation

FT Class: Aluminum alloy with satin-cadmium finish

TA Class: Titanium alloy

Contact material: Gold-plated copper alloy, available in crimped, welded, and printed circuit board types.

Mechanical lifespan: 500 insertion and removal cycles

Impact: 3ms half-sine wave; acceleration peak 300g

Vibration: Sine wave: 60g, with temperature cycling and simulation (36h)

Random: At high temperatures, frequency 100 to 1000 Hz, power spectral density 1 g²/Hz, corresponding root mean square value 41.7 g

At ambient temperature: Frequency range 100 to 1000 Hz, power spectral density 5 g²/Hz, corresponding root mean square value 49.5 g

Electrical Behavior

Voltage rating: V

Note: Different contact arrangements correspond to different operating grades; see the annotation in the upper-right corner of the contact arrangement for details.

Contact resistance and rated current of the contact parts:

Insulation resistance: ≥ 5000M Ω (500VDC)

Shell conductivity: W class: 2.5m Ω; F; FT class: 1.0m Ω; K; TA class: 10m Ω

Electromagnetic interference shielding: At 100 MHz to 1 GHz, the minimum attenuation is 85 dB (Class F, Class W). At 1GHz to 10GHz, the minimum attenuation is 65dB (F class) and 50dB (W class)

8# Dual coaxial contacts: Bandwidth 0–20 MHz, rated voltage: Maximum 500 VAC; at 21,000 m: 125 VAC. Voltage drop: Internal contacts and intermediate contacts ≤ 55 mV at 1 A; external contacts ≤ 75 mV at 12 A

Environmental Performance

Temperature range: W Class: -65 °C to +175 °C F, K, FT, TA categories: -65 °C to +200 °C

Salt spray resistance: W class: 500h   K, TA Class: 1000h; F Class: 48h/96h; FT Class: 96h

Sealing: The plug connector complies with the MIL-DTL-38999M requirements for low-pressure impregnation.

Dampness and Heat: According to MIL-DTL-38999M: 24 hours 10 cycles

Liquid resistance: Resistant to various fuels, coolant, and solvents