### Technical Overview: Delta AFB0612HD-R00 The **AFB0612HD-R00** is a high-performance DC axial fan manufactured by Delta Electronics. It belongs to the **AFB series**, known for its reliability and balance between airflow and noise level. --- ### Key Specifications | Parameter | Specification | | :--- | :--- | | **Rated Voltage** | 12V DC | | **Operating Voltage Range** | 7.0V to 13.8V DC | | **Rated Current** | 0.17A (Max 0.25A) | | **Rated Power** | 2.04W | | **Speed** | 4500 RPM | | **Airflow** | 22.25 CFM (0.630 $m^3/min$) | | **Static Pressure** | 0.224 in $H_2O$ (5.69 mm $H_2O$) | | **Noise Level** | 32.5 dB-A | | **Bearing Type** | Dual Ball Bearing | --- ### Electronic Features & Signal Output The model suffix **"-R00"** is critical for understanding its electronic behavior: 1. **Sensor Type (R00):** This indicates a **Locked Rotor Alarm (Sensor)**. Unlike the "F00" models which provide a Tachometer/Frequency output (Speed sensing), the "R00" provides a logic signal that triggers only when the fan stops spinning. 2. **Signal Logic:** * **Normal Operation:** The sensor output is usually pulled "Low." * **Locked Condition:** If the blades are obstructed, the internal circuitry pulls the signal "High" (or stays open-collector) to alert the system of a failure. 3. **Circuit Protection:** * **Polarity Protection:** Prevents damage if the positive and negative leads are reversed. * **Locked Rotor Protection:** Automatically shuts down or reduces power to the motor coils if the fan is stalled to prevent overheating. --- ### Physical & Material Composition * **Dimensions:** 60mm x 60mm x 20mm. * **Frame/Impeller:** Plastic (UL 94V-0), which is flame retardant. * **Wiring:** Typically 3-wire lead wires: * **Red:** Positive (+12V) * **Black:** Negative (GND) * **Blue:** RD (Rotation Detector) Signal. ### Applications Due to its **Dual Ball Bearing** construction, this fan is designed for high-longevity applications (approx. 70,000 hours at 40°C). It is commonly found in: * Network switches and routers. * Server power supplies. * Industrial control cabinets. ---