D38999/20WG11PN | 11-контактный квадратный фланцевый разъем серии III (размер 21)
The D38999/20WG11PN is a size 21 MIL-DTL-38999 Series III receptacle with 11 large pin contacts. Features “W” olive drab cadmium finish and “N” polarization for heavy-duty grids.
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D38999/20WG11PN Scalable Power and Signal Distribution in Size 21 Shells
Он D38999/20WG11PN is a robust interconnect solution designed for specialized electronic grids that require a dependable bridge for medium-to-high power loads. Utilizing the larger size 21 aluminum alloy shell, this receptacle facilitates eleven independent conductive channels through its 21-11 insert arrangement. Unlike high-density signal-only connectors, this model features Size 12 contacts, which offer a significantly larger cross-sectional area. This architectural choice allows for higher current carrying capacity and reduced electrical resistance, making it an ideal candidate for subsystem power distribution, heavy-duty actuator controls, and primary sensor interfaces in ruggedized 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 | N | резьбовая муфта |
Tactical Environmental Defense and Shell Conductivity
The “W” class finish of the D38999/20WG11PN represents a high-strength aluminum housing treated with olive drab cadmium over an electroless nickel underplate. This multi-layered coating is the benchmark for aggressive field environments, providing an exceptional 500-hour salt spray rating. Beyond its superior corrosion resistance, the cadmium finish is highly conductive, allowing the shell to act as a critical extension of the equipment ground. This ensures high-performance EMI and RFI shielding for the eleven internal lines, protecting them from electromagnetic interference in dense electronic clusters and unpressurized aerospace compartments.
Universal N-Keying and Seamless System Integration
The D38999/20WG11PN utilizes the standard “N” (Normal) polarization keyway, which is the most widely adopted indexing configuration in the Серия III framework. This ensures maximum intermateability with any standard-issue Series III plug of the same shell size and layout, facilitating easy integration into global defense supply chains and aerospace maintenance programs. The triple-start threaded coupling mechanism provides a self-locking connection that is inherently resistant to decoupling under severe harmonic vibration. This standardized indexing logic ensures that the D38999/20WG11PN delivers a familiar and reliable mating experience for technicians during rapid field maintenance and initial assembly.
Precision Contact Fidelity and 21-11 Layout Integrity
Within its size 21 housing, the D38999/20WG11PN employs the 21-11 layout, providing eleven channels using precision-machined Size 12 pin contacts. These contacts are finished with high-grade gold plating to maintain a low-resistance electrical path throughout the equipment’s operational life. The gold plating protects the contact interface from atmospheric oxidation and environmental degradation, even after repeated mating cycles. Despite the robust size of the pins, the high-performance dielectric insert provides exceptional insulation resistance, ensuring signal purity and preventing electrical leakage between channels in high-voltage or high-humidity operational zones.
Структурная устойчивость и усиленный монтаж
The mechanical reliability of the D38999/20WG11PN is supported by its Type 20 square flange design, which allows for a secure and permanent four-point mounting on heavy-duty equipment panels. This stable mounting interface is essential for supporting the mechanical tension and physical weight of larger gauge wire harnesses associated with Size 12 contacts. Furthermore, the 100% scoop-proof shell architecture ensures that the eleven pin 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 electrical precision makes the D38999/20WG11PN a durable solution for the most demanding electronic grids.
Часто задаваемые вопросы
How many contacts are in the D38999/20WG11PN?
How many contacts are in the D38999/20WG11PN?
The 21-11 layout features eleven Size 12 pin contacts, providing a robust interface for medium-to-high current power and signal distribution.
What is the benefit of the Size 12 contacts in this model?
What is the benefit of the Size 12 contacts in this model?
Size 12 contacts are much larger than standard signal pins, allowing them to carry significantly more electrical current while offering increased mechanical durability.
Обеспечивает ли покрытие цвета «оливково-зеленый кадмий» экранирование от электромагнитных помех?
Обеспечивает ли покрытие цвета «оливково-зеленый кадмий» экранирование от электромагнитных помех?
Да, покрытие в форме буквы “W” обладает высокой проводимостью, обеспечивая надежный низкоимпедансный путь заземления между корпусом и шасси для превосходного подавления электромагнитных помех.
Is the D38999/20WG11PN compatible with standard Series III plugs?
Is the D38999/20WG11PN compatible with standard Series III plugs?
Absolutely. As long as the mating plug is size 21, has the 11 layout, and uses standard “N” polarization, it will be fully intermateability with this receptacle.
Сможет ли этот разъем выдерживать высокую вибрацию в аэрокосмической отрасли?
Сможет ли этот разъем выдерживать высокую вибрацию в аэрокосмической отрасли?
Yes, the self-locking triple-start threads and robust square flange mount are specifically engineered to maintain electrical and mechanical integrity under extreme vibration and shock.
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