D38999/20WD97PLN | 12-Pin Series III PCB Receptacle (Size 15, Normal Key)
The D38999/20WD97PLN is a size 15 MIL-DTL-38999 Series III receptacle with 12 pin PCB contacts. Features “W” olive drab cadmium finish and “N” polarization for rugged electronic grids.
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D38999/20WD97PLN Versatile Interconnect for Board-Level Integration
The D38999/20WD97PLN is a specialized interconnect solution designed for advanced electronic grids where reliability and streamlined assembly are paramount. Utilizing the size 15 shell, this receptacle facilitates twelve independent conductive channels through its 15-97 insert arrangement. The integration of fixed PC tail contacts allows the connector to be mounted directly onto a printed circuit board (PCB), completely removing the need for internal wire harnesses and manual crimp terminations. This board-level architecture significantly reduces the total system weight and prevents wire-management clutter, making it a preferred choice for high-performance avionics suites and sophisticated ground-based control modules.
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 Resilience and Conductivity
The “W” class finish of the D38999/20WD97PLN indicates a high-strength aluminum alloy shell treated with olive drab cadmium plating over an electroless nickel underplate. This multi-layered defense system is specifically designed 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 an excellent low-impedance ground path between the shell and the equipment chassis. This conductivity is essential for maintaining effective EMI and RFI shielding, which protects the twelve internal signal lines from electromagnetic interference in dense electronic clusters.
Standard N-Keying and Global System Compatibility
The D38999/20WD97PLN utilizes the standard “N” (Normal) polarization keyway, which is the industry-default indexing configuration for Series III connectors. This ensures maximum intermateability with any standard-issue Series III plug of the same shell size and layout, facilitating easy integration into global aerospace and defense supply chains. The triple-start threaded coupling mechanism provides a self-locking connection that is inherently resistant to loosening under severe harmonic vibration. This standardized indexing logic ensures that the D38999/20WD97PLN delivers a familiar and reliable mating experience for technicians during rapid field maintenance and initial assembly cycles.
Precision Contact Fidelity and 15-97 Layout Integrity
Within the size 15 housing, the D38999/20WD97PLN employs the 15-97 insert arrangement, providing a versatile mix of eight Size 20 and four Size 16 signal channels. These PC tail contacts are precision-machined from copper alloy and finished with high-grade gold plating to maintain a low-resistance interface throughout the equipment’s service life. The gold plating ensures that the contact surfaces remain protected against atmospheric oxidation and sulfurization. Despite the varying sizes of the pins, the high-performance dielectric insert provides superior insulation resistance, ensuring signal purity and preventing crosstalk even in environments subject to rapid pressure changes and high humidity.
Structural Stability and Mechanical Durability
The structural integrity of the D38999/20WD97PLN is reinforced by its Type 20 square flange design, which allows for a secure and permanent four-point mounting on equipment panels. This stable mounting interface ensures that the mechanical forces encountered during the mating of the triple-start threaded coupling are absorbed by the chassis rather than the delicate PCB solder joints. Furthermore, the 100% scoop-proof shell architecture ensures that the twelve delicate PCB pins are recessed deeply enough within the housing to prevent any damage if the mating plug is misaligned during the connection process. This combination of mechanical robustness and board-level precision makes the D38999/20WD97PLN a future-proof interconnect solution for ruggedized digital grids.
FAQ
How many contacts are provided in the D38999/20WD97PLN?
How many contacts are provided in the D38999/20WD97PLN?
The 15-97 layout provides twelve individual signal channels, typically consisting of a combination of Size 16 and Size 20 contacts to balance power and signal needs.
What are the advantages of using PC tail contacts for this model?
What are the advantages of using PC tail contacts for this model?
Fixed PC tail contacts allow for direct soldering to a printed circuit board, which saves internal volume, reduces system weight, and eliminates the complexity of internal wire management.
Is the Olive Drab Cadmium finish suitable for maritime use?
Is the Olive Drab Cadmium finish suitable for maritime use?
Yes, the “W” finish is specifically designed for high-corrosion environments and is rated for 500 hours of salt spray, making it ideal for maritime and coastal tactical applications.
Does the "N" keying allow for universal mating?
Does the "N" keying allow for universal mating?
The “N” keying is the standard universal polarization for Series III, meaning it will mate with any size 15, 97-layout plug that also uses the standard “N” configuration.
Can this connector handle high-vibration aerospace use?
Can this connector handle high-vibration aerospace use?
Absolutely. The self-locking triple-start threads and the four-point square flange mount are specifically engineered to maintain electrical integrity under the extreme vibration levels of modern tactical platforms.
Certification
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