D38999/26WF32PN | 32-Pin Series III Aluminum Straight Plug (Size 19)
The D38999/26WF32PN is a size 19 MIL-DTL-38999 Series III aluminum plug with 32 pin contacts. Features “W” olive drab cadmium finish and “N” polarization for tactical grids.
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D38999/26WF32PN Versatile Signal Routing in Intermediate Shell Architectures
The D38999/26WF32PN is a precision-engineered interconnect solution designed for specialized electronic grids that require a balanced approach between contact density and mechanical robustness. Utilizing the size 19 aluminum alloy shell, this straight plug facilitates thirty-two independent conductive channels through its 19-32 insert arrangement. This layout is particularly effective for multi-channel sensor arrays and intermediate control systems where thirty-two Size 20 contacts provide enough capacity to handle both data streams and low-level power. By using Size 20 pins instead of high-density micro-contacts, the D38999/26WF32PN offers a more rugged electrical interface that is better suited for field applications requiring frequent mating cycles.
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 D38999/26WF32PN 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 features an internal grounding spring ring that provides 360-degree shell-to-shell conductivity upon mating, which is vital for maintaining effective EMI and RFI shielding for the thirty-two internal signal lines in EMI-dense aerospace environments.
Self-Locking Mechanical Integrity for High-Vibration Systems
As a Series III straight plug, the D38999/26WF32PN incorporates a triple-start threaded coupling mechanism with an integrated self-locking ratchet. This design allows for rapid and secure engagement with a single 360-degree turn of the coupling nut, providing audible and tactile confirmation that the connection is fully locked. The internal anti-decoupling device prevents the connector from loosening even when subjected to the intense harmonic vibrations and mechanical shocks common in turbine engine compartments or heavy armored vehicle operations. This mechanical stability ensures constant electrical continuity across the thirty-two-pin grid during critical flight operations or off-road maneuvers.
Precision Pin Fidelity and 19-32 Layout Stability
Within the size 19 housing, the D38999/26WF32PN employs thirty-two Size 20 pin contacts, providing a reliable interface for precision signal transmission. These pins are precision-machined from copper alloy and finished with high-grade gold plating to ensure low contact resistance and prevent surface oxidation throughout the equipment’s service life. The high-performance dielectric insert provides exceptional insulation resistance between the thirty-two channels, preventing electrical crosstalk even in unpressurized aerospace compartments subject to rapid temperature fluctuations. This ensures a clean signal environment for advanced telemetry systems and centralized control units operating under extreme atmospheric conditions.
100% Scoop-Proof Architecture and Field Maintenance
The structural reliability of the D38999/26WF32PN is reinforced by its 100% scoop-proof shell design. This feature ensures that the thirty-two pin 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 pins using standard military-specification tools without disassembling the entire unit. This combination of physical protection and modular maintainability ensures that the D38999/26WF32PN delivers a high level of operational readiness for mission-critical digital grids.
FAQ
How many contacts does the D38999/26WF32PN support?
How many contacts does the D38999/26WF32PN support?
The 19-32 layout provides thirty-two independent conductive channels using Size 20 pin contacts, offering a robust interface for mixed signal and low-power applications.
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 D38999/26WF32PN compatible with standard Series III receptacles?
Is the D38999/26WF32PN compatible with standard Series III receptacles?
Absolutely. As long as the mating receptacle is size 19, has the 32 layout, and uses standard “N” polarization, it will be fully intermateable with this plug.
Can this connector be used in maritime environments?
Can this connector be used in maritime environments?
Yes, the “W” finish is specifically designed to provide 500 hours of salt spray resistance, making it suitable for maritime, coastal, and high-humidity tactical applications.
Certification
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