The **AFB0805H-R00** is a high-performance DC axial fan manufactured by **Delta Electronics**. It is part of the AFB series, known for its reliability and balance between airflow and acoustic noise. --- ### 1. Technical Specifications Below are the primary electronic and mechanical specifications for this model: | Parameter | Specification | | :--- | :--- | | **Frame Size** | 80mm x 80mm x 25.4mm | | **Rated Voltage** | 5V DC | | **Operating Voltage Range** | 4.0V to 5.6V DC | | **Rated Current** | 0.35A (Max 0.53A) | | **Rated Input Power** | 1.75W | | **Speed** | 3000 RPM | | **Max Airflow** | 37.43 CFM (1.060 m³/min) | | **Max Static Pressure** | 3.45 mmH2O | | **Noise Level** | 31.0 dB-A | | **Bearing Type** | Ball Bearing | --- ### 2. Key Electronic Features * **Brushless DC Motor:** It utilizes a 3-phase/brushless design which reduces friction and electronic noise compared to brushed motors. * **Sensor Output (-R00 Suffix):** The "R00" designation indicates that this fan includes a **Locked Rotor Sensor (Sensor Signal)**. * **Function:** It provides a signal output that alerts the system if the fan blades are obstructed or if the motor stops spinning. * **Signal Type:** Usually an Open Collector output that stays "Low" during normal operation and goes "High" when the rotor is stalled. * **Polarity Protection:** Built-in protection against reverse polarity connection to prevent circuit burnout. * **Insulation Resistance:** Typically 10M Ohm or over between the frame and the terminal (at 500V DC). --- ### 3. Construction and Materials * **Frame/Impeller:** Plastic (UL 94V-0), which is flame retardant. * **Lead Wires:** Generally UL 1007 AWG #24 or equivalent. * *Red Wire:* Positive (+) * *Black Wire:* Negative (-) * *Third Wire (Blue/Yellow):* Sensor Signal (R00). --- ### 4. Typical Applications The AFB0805H-R00 is commonly used in: 1. **Compact Server Cases:** Where 5V rails are readily available. 2. **Network Switches/Routers:** Requiring constant cooling with failure monitoring. 3. **Industrial Controls:** Where high reliability (Ball Bearing) is required for long-term operation. ---