The **AFB0812VHB-R00** is a high-performance DC axial fan manufactured by **Delta Electronics**. It is part of the AFB series, known for its reliability in computer and industrial cooling applications. ### 1. Technical Specifications Below are the primary electrical and mechanical characteristics of this component: | Feature | Specification | | :--- | :--- | | **Frame Size** | 80 x 80 x 15 mm | | **Rated Voltage** | 12 VDC | | **Operating Voltage Range** | 7.0 to 13.8 VDC | | **Rated Current** | 0.30 A (Max 0.45 A) | | **Rated Input Power** | 3.60 W | | **Speed** | 3700 RPM | | **Air Flow** | 39.40 CFM (1.116 $m^3/min$) | | **Static Pressure** | 4.49 mm $H_2O$ | | **Noise Level** | 40.0 dB-A | | **Bearing Type** | Dual Ball Bearing | --- ### 2. Key Electronic Features The model number contains specific suffixes that define its electronic behavior: * **Dual Ball Bearing System:** Unlike sleeve bearings, the dual ball bearing system allows for both vertical and horizontal mounting and offers a significantly longer lifespan (L10 life of ~70,000 hours at 40°C). * **Brushless DC (BLDC) Motor:** It utilizes a 3-phase or 4-pole brushless motor, which reduces electromagnetic interference (EMI) and increases efficiency. * **Protection Features:** * **Locked Rotor Protection:** Prevents the motor from burning out if the blades are physically obstructed. * **Polarity Protection:** Protects the internal circuitry if the positive and negative leads are accidentally reversed. --- ### 3. The "-R00" Suffix (Sensor Type) The **-R00** designation is critical for the electronic interface. It indicates the type of output signal provided on the third wire: 1. **Sensor Type:** **Lock Sensor (High-to-Low).** 2. **Function:** Also known as a "Failure Alarm." 3. **Operation:** * When the fan is spinning normally, the output signal is **Low** (Logic 0). * If the fan stops or is blocked (Lock condition), the signal goes **High** (Logic 1). 4. **Wiring:** Usually consists of three wires: * **Red:** Positive (+12V) * **Black:** Negative (GND) * **Blue:** Lock Sensor Output (Open Collector) --- ### 4. Typical Applications Due to its thin profile (15mm) and high static pressure, this fan is commonly found in: * 1U/2U Rackmount Servers. * Power Supply Units (PSUs). * Compact Desktop PCs (Small Form Factor). * Industrial control cabinets requiring status monitoring via the Lock Sensor.