Based on the part number **MAH14FAX-R**, this component is a high-performance **Brushless DC (BLDC) Fan** manufactured by **Nidec** (formerly Nidec Copal). It is specifically engineered for precision cooling in compact electronic devices. Below is a detailed breakdown of its electronic and mechanical characteristics. --- ### 1. General Specifications The MAH14FAX-R is categorized as a micro-axial fan. Its primary role is to provide active thermal management in space-constrained environments. | Feature | Specification | | :--- | :--- | | **Manufacturer** | Nidec Corporation | | **Motor Type** | Brushless DC (BLDC) | | **Bearing Type** | FDB (Fluid Dynamic Bearing) or Sleeve (Model dependent) | | **Frame Material** | Plastic (PBT, UL94V-0) | | **Termination** | Wire Leads (typically 2-3 wires) | --- ### 2. Electrical Characteristics The "14" and "F" designations in the part number typically refer to the voltage and speed class. * **Operating Voltage:** Generally 5V DC (standard for micro-fans in portable electronics). * **Current Consumption:** Low power draw (typically <0.1A) to preserve battery life in mobile applications. * **Commutation:** Electronic commutation is handled by an internal IC, which eliminates the friction and electrical noise associated with carbon brushes. --- ### 3. Key Electronic Features The **"R" suffix** usually denotes specific output features or RoHS compliance. #### A. Protection Circuitry * **Locked Rotor Protection:** The internal IC detects if the fan blades are obstructed. It automatically cuts or pulses the power to prevent the coils from overheating and burning out. * **Polarity Protection:** Prevents damage if the positive and negative leads are accidentally reversed during installation. #### B. Signal Outputs (Model Variant Dependent) Depending on the specific wiring configuration, the electronic assembly may include: 1. **Tachometer (Frequency Generator):** A third wire (usually yellow or white) that outputs a square wave signal to the CPU to monitor RPM. 2. **Locked Rotor Alarm:** A signal that stays High or Low only when the fan stops spinning. --- ### 4. Dimensions and Form Factor The MAH series is known for its "Ultra-Micro" size: * **Size:** 14mm x 14mm. * **Thickness:** Extremely thin (often 3mm to 5mm), making it suitable for VR headsets, tablets, and handheld medical devices. --- ### 5. Application Use Cases Due to its tiny footprint and high reliability, the MAH14FAX-R is found in: * **Wearable Technology:** Smart glasses and AR/VR kits. * **Portable Projectors:** Cooling the LED light source. * **Storage Devices:** High-speed M.2 SSD coolers. * **IC Cooling:** Direct mounting on high-heat microprocessors.