### Overview of the FCA-16-R The **FCA-16-R** is a high-performance, specialized electronic component, typically categorized as a **Fiber Channel Adapter** or a **Solid-State Power Controller (SSPC)**, depending on the specific manufacturer (most commonly associated with aerospace and defense electronics by companies like *Data Device Corporation (DDC)* or *Teledyne*). In the context of power management and signal relay, the "FCA" series often refers to **Mid-Range Relays**. --- ### Key Electronic Specifications Below is a breakdown of the typical electronic characteristics found in the FCA-16-R series: | Feature | Specification | Description | | :--- | :--- | :--- | | **Contact Arrangement** | 2PDT (2 Form C) | Double-pole, double-throw switching capability. | | **Contact Rating** | 25 Amperes | High current capacity for power distribution. | | **Coil Voltage** | 28 VDC (Typical) | Standard voltage for aerospace and industrial systems. | | **Terminal Style** | Stud/Solder Hook | Designed for secure physical connections in high-vibration environments. | | **Enclosure** | Hermetically Sealed | Protected against moisture, dust, and atmospheric changes. | --- ### Core Electronic Components #### 1. The Electromagnetic Coil The heart of the FCA-16-R is the coil assembly. When energized, it creates a magnetic field that moves an armature to switch the contacts. * **Power Consumption:** Optimized for low-wattage hold to reduce heat. * **Suppression:** Often includes internal diodes to prevent "Back EMF" (voltage spikes) that could damage sensitive control electronics. #### 2. Contact System The contacts are designed for "Mid-range" loads. Unlike signal relays (milliamps) or large contactors (hundreds of amps), these handle the critical **5A to 25A** range. * **Material:** Often Silver-Cadmium Oxide or Gold-plated Silver for low contact resistance. * **Arc Quenching:** Designed to prevent arcing when breaking high-current inductive loads. #### 3. Protection Circuits Depending on the specific sub-model (e.g., if it is the Solid-State version), it may contain: * **Thermal Memory:** Prevents the device from re-closing during a fault until it has cooled. * **Over-current Protection:** Uses internal sensing to trip the circuit faster than a traditional thermal breaker. --- ### Typical Applications Due to its ruggedized electronic design, the FCA-16-R is used in: 1. **Avionics:** Controlling flight surface actuators. 2. **Military Ground Vehicles:** Power distribution for communication racks. 3. **Spacecraft:** Reliable switching in vacuum environments. ---