D38999/26WB4SN | 4-Socket Series III Aluminum Straight Plug (Size 11)
The D38999/26WB4SN is a size 11 MIL-DTL-38999 Series III aluminum plug with 4 socket contacts. Features “W” olive drab cadmium finish and “N” polarization for tactical grids.
999999 in stock
Share:
Product Categories
Request a Quote
D38999/26WB4SN Efficiency of Compact Plug Integration in Small-Scale Grids
The D38999/26WB4SN is a precision-engineered interconnect solution designed for specialized electronic grids where minimizing cable assembly weight and maintaining structural integrity are paramount. Utilizing the size 11 aluminum alloy shell, this straight plug facilitates four independent conductive channels through its 11-04 insert arrangement. Unlike high-density micro-signal models, the 11-04 layout employs Size 20 socket contacts, which provide a more robust interface for power-sensitive sensors and localized communication bus lines. This balance of a small mechanical footprint and reliable contact sizing makes the D38999/26WB4SN an essential component for man-portable electronic systems and lightweight unmanned aerial vehicle (UAV) control loops.
Key Specifications
Shell Material | Voltage Rating | Current Rating | Operating Temp | Ingress Protection | Mating Cycles | Keying & Polarization | Coupling |
|---|---|---|---|---|---|---|---|
Aluminum alloy | ~1000 VAC | ~23 A | -65 °C to +200 °C | IP67 | 500 | N | threaded coupling |
Tactical Environmental Defense and Shielding Conductivity
The “W” class finish of the D38999/26WB4SN represents a high-strength aluminum housing treated with olive drab cadmium over an electroless nickel underplate. This multi-layered defense system is specifically engineered for the most aggressive field environments, providing a certified 500-hour salt spray rating. Beyond its superior corrosion resistance, the cadmium finish is highly conductive, ensuring the plug shell acts as an efficient extension of the cable shield. The plug is equipped with an internal grounding spring ring that provides 360-degree shell-to-shell conductivity upon mating, effectively isolating the four internal circuits from EMI and RFI in electromagnetic saturated environments.
Self-Locking Mechanical Integrity and Vibration Damping
As a Series III straight plug, the D38999/26WB4SN features a triple-start threaded coupling mechanism with an integrated self-locking ratchet. This design allows for a rapid and secure connection with only one full turn of the coupling nut, providing tactile and audible confirmation of a complete mate. The internal anti-decoupling device ensures that the connector remains locked even when subjected to the severe harmonic vibrations and mechanical shocks typical of helicopter avionics or high-impact military vehicle electronics. This mechanical stability ensures constant electrical continuity across the four-pin grid, preventing intermittent data loss or power fluctuations during high-vibration mission phases.
Precision Socket Fidelity and 11-04 Layout Reliability
Within the size 11 housing, the D38999/26WB4SN employs four Size 20 socket contacts, providing a secure female interface that protects the internal electrical connection from external contamination. These sockets are precision-machined from copper alloy and finished with high-grade gold plating to maintain a low-resistance electrical interface throughout the equipment’s service life. The gold plating protects the contact surfaces from atmospheric oxidation, even in unpressurized aerospace compartments subject to rapid temperature fluctuations. The high-performance dielectric insert ensures superior insulation resistance between the four channels, preventing electrical leakage and maintaining signal purity for critical sensor data.
100% Scoop-Proof Architecture and Field Serviceability
The structural reliability of the D38999/26WB4SN is reinforced by its 100% scoop-proof shell design. This feature ensures that the four socket contacts are recessed deeply enough within the plug housing to prevent any bending or damage if the mating receptacle is misaligned during the connection process. For long-term logistical support, the plug utilizes a rear-release crimp contact system, allowing technicians to install or replace individual sockets using standard military-specification tools without disassembling the entire unit. This combination of physical protection and modular maintainability ensures that the D38999/26WB4SN delivers a high level of operational readiness for mission-critical digital grids.
FAQ
How many contacts are provided in the D38999/26WB4SN?
How many contacts are provided in the D38999/26WB4SN?
The 11-04 layout provides four independent conductive channels using Size 20 socket contacts, offering a reliable interface for power and signal transmission.
What are the advantages of the triple-start threaded coupling?
What are the advantages of the triple-start threaded coupling?
The triple-start threads allow for rapid mating with a single turn and include an integrated self-locking ratchet that prevents the plug from loosening under high-vibration conditions.
Does the Olive Drab Cadmium finish provide EMI shielding?
Does the Olive Drab Cadmium finish provide EMI shielding?
Yes, the “W” finish is highly conductive and works in conjunction with the plug’s internal grounding fingers to provide 360-degree EMI/RFI protection for the internal signal grid.
Is the D38999/26WB4SN compatible with standard Series III receptacles?
Is the D38999/26WB4SN compatible with standard Series III receptacles?
Absolutely. As long as the mating receptacle is size 11, has the 04 layout, and uses standard “N” polarization, it will be fully intermateable with this plug.
Can this connector handle high-vibration tactical use?
Can this connector handle high-vibration tactical use?
Yes, the self-locking mechanism and robust aluminum construction are specifically engineered to maintain electrical and mechanical integrity under extreme vibration and shock conditions.
Certification
- 测试文件后期要删除换成你自己的
