The **W2TG0-3CB-R** is a specific technical part number, typically associated with specialized electronic cooling fans or thermal management components, often produced by manufacturers like **Sanyo Denki** or companies specializing in server/industrial hardware. Below is a breakdown of the electronic and mechanical characteristics typical of this component category. --- ### 1. General Specifications Based on the part numbering convention, this is a **high-performance DC Axial Fan** used for cooling sensitive electronic enclosures. | Feature | Specification (Typical) | | :--- | :--- | | **Component Type** | DC Axial Cooling Fan | | **Nominal Voltage** | 12V or 24V DC (Model dependent) | | **Bearing Type** | Dual Ball Bearing (for long life) | | **Housing Material** | Aluminum or Glass-reinforced Plastic (PBT) | | **Termination** | 3-Wire (Lead wires) | --- ### 2. Key Electronic Features The "3CB" segment of the part number often indicates specific internal circuitry and control signals: * **Pulse Width Modulation (PWM):** Allows the system to control the fan speed dynamically based on the temperature of the equipment. * **Tachometer Output (Sensor):** The third wire (usually yellow or white) provides a frequency signal to the motherboard/controller to monitor the RPM. If the fan stalls, the system triggers an alarm. * **Polarity Protection:** Includes internal diodes to prevent damage if the positive and negative leads are reversed during installation. * **Locked Rotor Protection:** The internal IC cuts power to the motor coils if the blades are obstructed, preventing the motor from overheating or burning out. --- ### 3. Pinout Configuration For a standard 3-wire DC fan in this series, the wiring logic is usually as follows: | Wire Color | Function | Description | | :--- | :--- | :--- | | **Red** | VCC | Positive Power Supply | | **Black** | GND | Ground / Negative | | **Yellow/White** | FG (Frequency Generator) | Speed/Tachometer signal output | --- ### 4. Typical Applications These parts are engineered for environments where high static pressure and reliability are required: 1. **Server Racks:** Cooling high-density CPU/GPU clusters. 2. **Power Supplies:** Heat dissipation for industrial switching power units. 3. **Telecommunications:** Cooling for outdoor base stations and routing equipment. ---