The **D369-R39-AS0** is a specific part number belonging to the **DEUTSCH 369 Series** of connectors, manufactured by TE Connectivity. These connectors are high-reliability, lightweight, and compact, specifically designed for harsh environments such as aerospace and defense. ### 1. Part Number Breakdown To understand the electronic and physical properties, here is a breakdown of the nomenclature: | Component Code | Description | | :--- | :--- | | **D369** | Series Prefix (DEUTSCH 369 Series) | | **R** | Receptacle (The housing type) | | **3** | Number of rows (3 Rows) | | **9** | Total Number of Contacts (9 Positions) | | **A** | Keying/Polarization (Type A) | | **S** | Contact Gender (S = Socket / Female) | | **0** | Mounting/Backshell variant (Standard configuration) | --- ### 2. Technical Specifications The electronic and mechanical performance of the D369-R39-AS0 is defined by its aerospace-grade construction: * **Contact Size:** Typically uses Size 22D contacts. * **Current Rating:** Approximately 5 Amps per contact. * **Dielectric Withstanding Voltage:** 600 VAC at sea level. * **Insulation Resistance:** $\ge$ 5000 M$\Omega$ at 500 VDC. * **Operating Temperature:** -55°C to +175°C. * **Weight:** Extremely low (composite materials), ideal for flight weight-savings. --- ### 3. Key Electronic & Physical Features The 369 series provides several features that distinguish it from standard industrial connectors: * **Integrated Shielding:** While lightweight, the composite shell is designed to maintain signal integrity in EMI/RFI sensitive environments. * **Color-Coded Keying:** The "A" designation refers to a specific mechanical key and color code (usually Red for A), preventing accidental cross-mating in systems with multiple connectors. * **Triple Barrier Seals:** Includes wire seals, interfacial seals, and cork-in-bottle seals to prevent moisture and dust ingress, maintaining electrical conductivity in humid or pressurized environments. * **Scoop Proof:** The design prevents damage to the pins during blind mating. --- ### 4. Typical Applications Because of its small footprint and high reliability, this part is commonly used in: * **Commercial Aircraft:** Cabin systems, lighting, and seat electronics. * **UAVs (Drones):** Flight controllers and sensor payloads. * **Defense:** Man-portable equipment and tactical communications. * **Space:** Satellite subsystems where weight is critical.