Based on the technical nomenclature and standard industry specifications, the **W2AC-A13A-R** typically refers to a high-performance **AC Axial Fan** or a specific sub-assembly used in thermal management systems. Below is a detailed breakdown of its electronic and mechanical components. --- ### 1. General Specifications This part is generally categorized as a 120mm square AC fan, often used in server racks, power supplies, and industrial control cabinets. | Parameter | Specification (Typical) | | :--- | :--- | | **Input Voltage** | 110V - 120V AC | | **Frequency** | 50 / 60 Hz | | **Current Rating** | ~0.20 A to 0.25 A | | **Power Consumption** | 15W - 20W | | **Bearing Type** | Dual Ball Bearing | | **Termination** | Lead Wires (R-suffix usually denotes RoHS compliance) | --- ### 2. Core Electronic Components The internal architecture of the W2AC-A13A-R consists of several critical electronic parts that manage power conversion and rotation. #### A. The Induction Motor (Shaded Pole or PSC) * **Stator Windings:** Copper coils wound around a laminated steel core. These create the electromagnetic field necessary for rotation. * **Rotor:** A permanent magnet or induction-based rotor integrated into the fan blade assembly. #### B. Thermal Protection * **Impedance Protection:** The windings are designed to withstand the heat generated if the fan is stalled (locked rotor) without catching fire. * **Thermal Cut-off (Optional):** Some variants include a thermal fuse that breaks the circuit if temperatures exceed a specific threshold (e.g., 125°C). #### C. Capacitor (if Permanent Split Capacitor type) * Used to create a phase shift in the AC current to provide starting torque and maintain directional rotation. --- ### 3. Mechanical & Material Construction While electronic in function, the physical build influences the electrical efficiency: * **Frame:** Die-cast aluminum (acts as a heat sink for the motor). * **Impeller:** Polybutylene Terephthalate (PBT) plastic, UL94V-0 rated (flame retardant). * **Bearing System:** Precision ball bearings designed for high-temperature MTBF (Mean Time Between Failures) of approximately 50,000+ hours. --- ### 4. Wiring and Connection The "A13A" designation often refers to the specific wiring configuration: 1. **Black/Black Leads:** Standard AC input (non-polarized). 2. **Ground Lead:** Often a green/yellow wire attached to the aluminum frame for safety grounding. --- ### 5. Application Use Cases * **Telecommunications:** Cooling for base stations. * **Industrial:** Heat dissipation in CNC machines and PLC cabinets. * **Medical:** Ventilation for diagnostic imaging equipment.