D38999/24WJ19SA | 19-гнездная гнездовая гайка серии III (размер 25, ключ A)
The D38999/24WJ19SA is a size 25 MIL-DTL-38999 Series III jam nut receptacle with 19 heavy-duty socket contacts. Features “W” finish and “A” polarization for high-power grids.
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D38999/24WJ19SA Robust Power Integration in Large-Format Jam Nut Architectures
Он D38999/24WJ19SA is a precision-engineered interconnect solution designed for specialized electronic grids where massive current-carrying capacity must be integrated into a single-hole mounting interface. Utilizing the size 25 aluminum alloy shell, which is the largest standard housing in the Series III family, this receptacle facilitates nineteen independent conductive channels through its 25-19 insert arrangement. These Size 12 socket contacts are designed to handle significant electrical loads, making this model an essential component for primary power distribution units, heavy-duty motor drives, and centralized energy management systems in tactical ground vehicles and large aerospace platforms.
Основные характеристики
Материал оболочки | Номинальное напряжение | Текущий рейтинг | Рабочая температура | Степень защиты от проникновения влаги и пыли | Циклы спаривания | Ключевая модуляция и поляризация | Соединение |
|---|---|---|---|---|---|---|---|
Алюминиевый сплав | ~1000 В переменного тока | ~23 А | от -65 °C до +200 °C | IP67 | 500 | A | резьбовая муфта |
Тактическая защита от воздействия окружающей среды и проводимость заземления
The “W” class finish of the D38999/24WJ19SA 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 receptacle remains operational in maritime or high-humidity environments. Beyond its superior corrosion resistance, the cadmium layer provides excellent surface conductivity, ensuring the shell acts as an efficient extension of the equipment ground. This is vital for maintaining effective EMI and RFI shielding, protecting the nineteen internal power and signal lines from electromagnetic noise in high-density electronic clusters.
Alternate A-Keying for Complex System Error-Proofing
Он D38999/24WJ19SA features the “A” polarization keyway, which provides an alternate indexing configuration designed to prevent accidental cross-mating in complex multi-connector panels. In environments where several size 25 connectors are co-located, utilizing alternate keys like “A” ensures that only the correctly keyed plug can be mated with this specific receptacle. This physical lockout mechanism is a critical safety feature for engineers, as it eliminates the risk of human error during rapid field assembly or emergency maintenance. Combined with the triple-start threaded coupling, the “A” keying ensures a secure, verified, and vibration-resistant connection for mission-critical power grids.
High-Fidelity Socket Contacts and 25-19 Layout Integrity
Within the large size 25 housing, the D38999/24WJ19SA employs nineteen Size 12 socket contacts, providing a secure female interface that is highly resistant to mechanical shock and harmonic vibration. These contacts 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 large Size 12 contact diameter provides a generous mating surface area, which is essential for maintaining electrical stability under high-current conditions. The high-performance dielectric insert ensures superior insulation resistance, preventing electrical leakage between the nineteen channels even in unpressurized aerospace compartments.
Mechanical Stability and Single-Hole Mounting Efficiency
The structural reliability of the D38999/24WJ19SA is enhanced by its Type 24 jam nut design, which allows for a secure and permanent single-hole mounting on equipment bulkheads. This mounting style is particularly effective for larger size 25 shells, as it provides a high-torque mechanical connection that can withstand the weight and tension of heavy-gauge 19-wire cable harnesses. Furthermore, the 100% scoop-proof shell architecture ensures that the nineteen socket contacts are recessed deeply enough to prevent any damage if the mating plug is misaligned during the connection process. This combination of structural rigidity and modular serviceability makes the D38999/24WJ19SA a durable solution for ruggedized digital grids.
Часто задаваемые вопросы
How many contacts are provided in the D38999/24WJ19SA?
How many contacts are provided in the D38999/24WJ19SA?
The 25-19 layout features nineteen independent conductive channels using Size 12 socket contacts, optimized for high-current power distribution and heavy-duty signal transmission.
What is the benefit of the alternate "A" keying position?
What is the benefit of the alternate "A" keying position?
The “A” keying provides a specific physical orientation that prevents the connector from mating with plugs keyed to “N” or other positions, which is essential for avoiding misconnections on crowded panels.
Does the Olive Drab Cadmium finish help with EMI shielding?
Does the Olive Drab Cadmium finish help with EMI shielding?
Да, покрытие в форме буквы “W” обладает высокой проводимостью, обеспечивая надежный низкоимпедансный путь заземления между корпусом и шасси для превосходного подавления электромагнитных помех.
What are the advantages of the Jam Nut (Type 24) mount in size 25?
What are the advantages of the Jam Nut (Type 24) mount in size 25?
Jam nut mounting simplifies panel preparation by requiring only a single hole, and for large connectors like size 25, it provides a stable, high-torque attachment that can support heavy wiring bundles.
Сможет ли этот разъем выдерживать высокую вибрацию в аэрокосмической отрасли?
Сможет ли этот разъем выдерживать высокую вибрацию в аэрокосмической отрасли?
Absolutely. The self-locking triple-start threads and the secure jam nut mounting are specifically engineered to maintain electrical and mechanical integrity under extreme vibration and shock conditions.
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