Description
Delta AFB02505MA-C (also known as AFB02505MAC) is an ultra-compact brushless DC axial cooling fan engineered in a space-saving 25 x 25 x 10 mm (0.984 x 0.984 x 0.394 in) form factor. Operating on a 5.0 VDC nominal supply (4.0 to 5.5 VDC range), this precision unit delivers an airflow of 1.20 CFM (2.04 m³/h) and static pressure of 0.085 in H₂O (21.2 Pa) at a rated speed of 7000 RPM while maintaining an acoustic output of just 20.0 dB(A). Built with dual precision ball bearings and flame-retardant UL 94V-0 rated plastic housing and impeller, it is designed for continuous S1 duty across demanding embedded environments. Electrical termination is provided via 150 mm UL 1061 AWG #28 lead wires with integrated locked rotor impedance protection and reverse polarity tolerance.
Key Features
- Aerodynamic Density: Delivers 1.20 CFM airflow and 0.085 in H₂O static pressure at 7000 RPM for compact thermal bottlenecks.
- Dual Ball Bearing System: Engineered for continuous duty offering 30,000 hours L10 service life at 40°C in high-reliability enclosures.
- UL 94V-0 Construction: Reinforced flame-retardant thermoplastic frame and impeller ensure structural stability and fire compliance.
- Motor Circuit Safety: Built-in 96-hour locked rotor impedance protection and reverse polarity defense prevent catastrophic failure.
- Acoustic Optimization: Operates at an ultra-low 20.0 dB(A) sound level for noise-sensitive medical and instrumentation applications.
Technical Specifications
| Manufacturer | Delta |
|---|---|
| Manufacturer Part Number (MPN) | AFB02505MA-C |
| Alternate Part Number | AFB02505MAC |
| Product Series | AFB Series |
| Product Category | DC Axial Fans |
| Fan / Component Type | DC Brushless Tubeaxial Fan |
| Phase & Supply Type | DC |
| Rated Voltage | 5.0 VDC |
| Operating Voltage Range | 4.0 to 5.5 VDC |
| Rated Current | 0.06 A |
| Max. Current Draw | 0.10 A |
| Power Rating | 0.30 W |
| Max. Input Power | 0.50 W |
| Speed (RPM) | 7000 RPM |
| Airflow | 1.20 CFM (2.04 m³/h / 0.034 m³/min) |
| Min. Airflow | 1.02 CFM (1.73 m³/h / 0.029 m³/min) |
| Static Pressure | 0.085 in H₂O (21.2 Pa / 2.18 mmH₂O) |
| Min. Static Pressure | 0.063 in H₂O (15.8 Pa / 1.61 mmH₂O) |
| Noise Level | 20.0 dB(A) |
| Airflow Direction | Intake over struts / exhaust front |
| Dimensions (L × H × D) | 25.0 × 25.0 × 10.0 mm (0.984 × 0.984 × 0.394 in) |
| Mounting Hole Pitch | 20.0 × 20.0 mm (0.787 × 0.787 in) |
| Mounting Hole Diameter | 4 × Ø 2.8 mm (4 × Ø 0.110 in) |
| Housing Material | Plastic (UL 94V-0) |
| Impeller Material | Plastic (UL 94V-0) |
| Bearing Type | Two Ball Bearings |
| Direction of Rotation | Clockwise (viewed from nameplate side) |
| Weight | 8.0 g (0.018 lbs / 0.28 oz) |
| Termination & Cable Specs | 2 Lead Wires, UL 1061 AWG #28, Length 150.0 ± 10.0 mm (5.906 ± 0.394 in) |
| Wiring Pinout / Connection | Black: Negative (-), Red: Positive (+) |
| Motor Protection | Locked Rotor Impedance Protection (96 Hours) & Reverse Polarity Protection |
| Insulation Resistance | 10 MΩ min. at 500 VDC (between frame and (+) terminal) |
| Dielectric Strength | 5 mA max. at 500 VAC 50/60 Hz 1 minute (between frame and (+) terminal) |
| Operating Temperature | -10 °C to +70 °C (14 °F to 158 °F) |
| Storage Temperature | -40 °C to +75 °C (-40 °F to 167 °F) |
| Operating Humidity | 5% to 90% RH |
| Storage Humidity | 5% to 95% RH |
| Service Life (L10) | 30,000 Hours continuous operation at 40 °C (15% to 65% RH) |
| Standards & Compliance | RoHS Compliant, UL 94V-0, Free of ODS (CFCs/PBBOs/PBDPEs) |
Applications
Delta AFB02505MA-C axial cooling fans provide targeted micro-thermal management in ultra-compact embedded computing systems, 1U networking hardware, and portable medical diagnostic equipment. The low-profile 25 mm footprint integrates into tightly spaced optical transceivers, network switches, handheld laboratory monitors, and compact IoT sensor enclosures where concentrated component dissipation is required. It is an established OEM and MRO drop-in replacement for cooling microprocessors, FPGA daughterboards, CCTV cameras, and modular single-board computer subsystems.
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