D38999/26WA98SN | 3-Socket Series III Aluminum Straight Plug (Size 9)
The D38999/26WA98SN is a size 9 MIL-DTL-38999 Series III aluminum plug with 3 socket contacts. Features “W” olive drab cadmium finish and “N” polarization for compact grids.
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D38999/26WA98SN Spatial Efficiency in Miniature Electronic Grids
The D38999/26WA98SN is a precision-engineered interconnect solution designed for specialized electronic grids where physical volume is the most critical constraint. Utilizing the size 9 aluminum alloy shell, which is the smallest standard housing in the Series III family, this straight plug facilitates three independent conductive channels through its 09-98 insert arrangement. This layout uses Size 20 socket contacts, providing a robust interface for critical low-power circuits and analog sensor signals. By maintaining a minimal mechanical footprint, the D38999/26WA98SN is an essential component for high-performance drones, wearable tactical gear, and localized monitoring nodes where every millimeter of panel and cable space must be optimized.
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 Shielding and Grounding Continuity
The “W” class finish of the D38999/26WA98SN consists of an olive drab cadmium plating applied over an electroless nickel underplate, creating a multi-layered defense against atmospheric degradation. This finish is specifically certified for 500 hours of continuous salt spray exposure, ensuring the plug remains functional in maritime or high-humidity tactical zones. Beyond its superior corrosion resistance, the cadmium layer provides excellent surface conductivity, ensuring the shell acts as an efficient extension of the cable ground. This is vital for maintaining effective EMI and RFI shielding, protecting the three internal signal paths from electromagnetic noise in saturated electronic environments.
Self-Locking Mechanical Integrity for High-Vibration Micro-Systems
As a Series III straight plug, the D38999/26WA98SN features a triple-start threaded coupling mechanism with an integrated self-locking ratchet. Despite its small size, this design facilitates a rapid and secure connection with only one full turn of the coupling nut, providing tactile confirmation of a complete mate. The internal anti-decoupling device ensures that the connector remains locked even under the severe harmonic vibrations and mechanical shocks typical of small aircraft engine sensors or high-velocity projectile electronics. This mechanical stability ensures constant electrical continuity across the three-pin grid, preventing intermittent data loss during high-stress operational phases.
Precision Socket Fidelity and 09-98 Layout Stability
Within the ultra-compact size 9 housing, the D38999/26WA98SN employs three 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 an ultra-low-resistance electrical path throughout the equipment’s service life. The high-performance dielectric insert ensures that each of the three signal paths is electrically isolated, maintaining high insulation resistance even under rapid pressure changes or high humidity. This ensures that the micro-signal grid remains free from crosstalk and signal leakage in unpressurized compartments.
100% Scoop-Proof Architecture and Field Serviceability
The structural reliability of the D38999/26WA98SN is reinforced by its 100% scoop-proof shell design. This feature ensures that the three 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 D38999/26WA98SN delivers a high level of operational readiness for mission-critical digital grids.
FAQ
How many contacts are supported by the D38999/26WA98SN?
How many contacts are supported by the D38999/26WA98SN?
The 09-98 layout provides three independent conductive channels using Size 20 socket contacts, offering a reliable interface for power and signal transmission in miniature systems.
What are the benefits of the triple-start threaded coupling?
What are the benefits 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 with the internal grounding fingers to provide 360-degree EMI/RFI protection for the internal conductive grid.
Is the D38999/26WA98SN compatible with standard Series III receptacles?
Is the D38999/26WA98SN compatible with standard Series III receptacles?
Absolutely. As long as the mating receptacle is size 9, has the 98 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
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