D38999/26FJ35PD | 128-контактная вилка серии III с химическим никелированием (размер 25, ключ D)
The D38999/26FJ35PD is a size 25 MIL-DTL-38999 Series III aluminum plug with 128 pin contacts. Features electroless nickel “F” finish and “D” polarization for high-density grids.
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D38999/26FJ35PD Massive Signal Consolidation in Large-Scale Digital Grids
Он D38999/26FJ35PD is a precision-engineered interconnect solution designed for specialized electronic grids that serve as the central nervous system for complex aerospace and defense platforms. Utilizing the size 25 aluminum alloy shell, this straight plug facilitates a staggering 128 independent conductive channels through its 25-35 high-density insert arrangement. This layout is a critical asset for centralized mission computers and advanced signal intelligence suites where a vast number of telemetry, sensor, and command lines must be consolidated into a single interface. By housing 128 Size 22D pin contacts, the D38999/26FJ35PD enables extreme functional integration while maintaining a standardized military-grade form factor.
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 | D | резьбовая муфта |
Electroless Nickel Finish and Enhanced Shell Conductivity
The “F” class finish of the D38999/26FJ35PD represents a high-purity electroless nickel plating applied over the aluminum housing. Unlike the standard olive drab cadmium finish, chemical nickel provides superior surface conductivity, which is essential for minimizing contact resistance between mated shells. This finish is specifically engineered for environments where high-performance EMI and RFI shielding are non-negotiable but extreme salt spray resistance is secondary to electrical fidelity. The conductive nature of the “F” finish, combined with the plug’s internal grounding fingers, ensures that the 128 internal signal paths are isolated from external electromagnetic noise in dense electronic compartments.
Alternate D-Keying for Error-Proof System Architecture
Он D38999/26FJ35PD features the “D” polarization keyway, providing a unique physical indexing configuration that is distinct from the standard “N” or “A” positions. In complex system panels where multiple size 25 connectors are co-located, utilizing alternate keys like “D” is a critical safety strategy to prevent accidental cross-mating. This physical lockout mechanism ensures that only the specifically keyed plug can be mated with its corresponding receptacle, eliminating the risk of human error during rapid field assembly or equipment overhauls. Combined with the triple-start threaded coupling, the “D” keying ensures a verified and secure connection for high-stakes digital grids.
Precision Pin Fidelity and 25-35 Layout Integrity
Within the large size 25 housing, the D38999/26FJ35PD employs 128 Size 22D pin contacts, providing a high-fidelity interface for high-speed digital data and precision analog feeds. These pins are precision-machined from copper alloy and finished with high-grade gold plating to ensure a low-resistance electrical path and prevent atmospheric oxidation throughout the equipment’s operational life. The high-performance dielectric insert provides exceptional insulation resistance between the 128 channels, preventing electrical crosstalk and leakage even under rapid pressure changes. This ensures that the massive signal grid remains stable and reliable for advanced command, control, and communication systems.
Self-Locking Stability and Mechanical Protection
The structural reliability of the D38999/26FJ35PD is reinforced by its 100% scoop-proof shell architecture and its integrated self-locking mechanism. The triple-start threads allow for rapid mating with only one full 360-degree turn of the coupling nut, providing tactile and audible confirmation of a secure lock. The internal anti-decoupling device ensures the plug remains fully mated even when subjected to the intense harmonic vibrations common in jet engine compartments or heavy armored vehicle operations. Furthermore, the recessed contact design protects the 128 delicate pins from damage during blind-mating scenarios, ensuring the long-term serviceability of the interconnect in ruggedized digital environments.
Часто задаваемые вопросы
How many signal channels does the D38999/26FJ35PD support?
How many signal channels does the D38999/26FJ35PD support?
The 25-35 layout provides 128 independent conductive channels using high-density Size 22D pin contacts, offering the maximum signal capacity available for a size 25 shell.
What are the benefits of the "F" Electroless Nickel finish?
What are the benefits of the "F" Electroless Nickel finish?
The “F” finish provides excellent surface conductivity for superior EMI/RFI shielding and a clean, durable aesthetic suitable for controlled environments where high electrical fidelity is required.
What is the role of the alternate "D" keying position?
What is the role of the alternate "D" keying position?
The “D” keying provides a specific physical orientation that prevents the plug from mating with receptacles keyed to other positions, ensuring safety in multi-connector panels.
Is the D38999/26FJ35PD compatible with standard Series III receptacles?
Is the D38999/26FJ35PD compatible with standard Series III receptacles?
Yes, as long as the mating receptacle is size 25, has the 35 layout, and is also configured with the “D” polarization keyway, it will be fully intermateable.
Does this plug include vibration resistance features?
Does this plug include vibration resistance features?
Безусловно. Он оснащен самоблокирующимся резьбовым соединительным механизмом с тройным пусканием, предназначенным для поддержания электрической непрерывности при сильных механических ударах и гармонических колебаниях.
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