Description
The Delta ASB0312HA-DF00 (also known as ASB0312HADF00) is an ultra-compact brushless DC axial cooling fan engineered in a square 30 x 30 x 10 mm (1.18 x 1.18 x 0.39 in) form factor for dense microelectronics thermal management. Operating on a nominal 12 VDC supply with a power draw of 0.84 W, this unit delivers an airflow rating of 4.30 CFM (7.31 m³/h) and a maximum static pressure of 0.214 in H₂O (53.3 Pa) at 10,500 RPM. Constructed with lightweight UL 94V-0 flame-retardant plastic housing and impeller, it incorporates a precision sleeve bearing system engineered for 20,000 operating hours at 40 °C. Electrical connection is provided via 150 mm UL 1061 AWG #28 lead wires featuring integrated impedance locked rotor protection, reverse polarity protection, and a 3rd-wire open-collector frequency generator (FG) tachometer speed sensor.
Key Features
- High-Speed Micro Tubeaxial: Delivers 4.30 CFM airflow and 0.214 in H₂O pressure within an ultra-compact 30x30x10mm frame.
- Frequency Generator Output: Features a third-wire open collector FG tachometer signal providing four pulses per revolution for real-time monitoring.
- UL 94V-0 Rated Materials: Molded from flame-retardant thermoplastic for both impeller and frame ensuring stringent industrial equipment compliance.
- Comprehensive Motor Protection: Integrates 96-hour locked rotor winding impedance protection alongside reverse polarity safeguards against improper wiring.
- Optimized Power Efficiency: Consumes only 0.84 W nominal power draw at 10,500 RPM for sensitive DC bus architectures.
Technical Specifications
| Manufacturer | Delta |
|---|---|
| Manufacturer Part Number (MPN) | ASB0312HA-DF00 |
| Alternate Part Number | ASB0312HADF00 |
| Product Series | ASB Series |
| Product Category | DC Axial Fans |
| Fan / Component Type | DC Brushless Tubeaxial Fan |
| Phase & Supply Type | DC |
| Rated Voltage | 12 VDC |
| Operating Voltage Range | 7.0 to 13.2 VDC |
| Min. Starting Voltage | 7.0 VDC |
| Speed (RPM) | 10,500 RPM (±15%) |
| Power Rating | 0.84 W |
| Max. Input Power | 1.68 W |
| Rated Current | 0.07 A |
| Max. Current Draw | 0.14 A |
| Safety Current on Label | 0.14 A |
| Airflow | 4.30 CFM (0.122 m³/min / 7.31 m³/h) |
| Min. Airflow | 3.52 CFM (0.100 m³/min / 6.00 m³/h) |
| Static Pressure | 0.214 in H₂O (5.44 mmH₂O / 53.3 Pa) |
| Min. Static Pressure | 0.143 in H₂O (3.65 mmH₂O / 35.8 Pa) |
| Noise Level | 27.0 dB(A) |
| Max. Acoustical Noise | 32.0 dB(A) |
| Dimensions (L × H × D) | 30.0 × 30.0 × 10.0 mm (1.181 × 1.181 × 0.394 in) |
| Mounting Hole Pitch | 24.0 ± 0.3 mm (0.945 ± 0.012 in) |
| Mounting Hole Diameter | 4 × Ø 3.2 ± 0.3 mm (4 × Ø 0.126 ± 0.012 in) |
| Housing Material | Plastic (UL 94V-0) |
| Impeller Material | Plastic (UL 94V-0) |
| Bearing Type | Sleeve Bearing |
| Direction of Rotation | Counterclockwise (CCW) viewed from air flow inlet |
| Weight | 7.4 g (0.016 lbs) |
| Termination & Cable Specs | 3 Lead Wires, UL 1061 AWG #28, 150.0 ± 10.0 mm (5.906 ± 0.394 in), Twisted 2~3 turns |
| Wiring Pinout / Connection | Red: Positive (+), Black: Negative (-), Blue: Frequency Generator / FG Output (-F00) |
| Control / Signal Features | Frequency Generator (FG) Tachometer Speed Sensor (Open Collector Mode, 4 Poles / Pulses per Rev) |
| FG Signal Max. Collector Voltage (VFG) | 13.2 VDC Max. |
| FG Signal Max. Collector Current (Ic) | 5 mA Max. |
| FG Signal Saturation Voltage (VCE sat) | 0.5 V Max. |
| Motor Protection | Impedance Locked Rotor Protection (96 Hours), Polarity Protection |
| Insulation Class | UL Class A |
| Insulation Resistance | 10 MΩ min. at 500 VDC (between frame and positive terminal) |
| Dielectric Strength | 5 mA max. at 500 VAC 50/60 Hz for 1 minute (between frame and positive 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 | 0% to 90% RH |
| Storage Humidity | 0% to 95% RH |
| Service Life (L10) | 20,000 Hours continuous operation at 40 °C, 65% RH |
| Standards & Compliance | RoHS Compliant, cURus, TUV, CE |
Applications
The Delta ASB0312HA-DF00 axial fan is primarily engineered for targeted localized heat dissipation within space-constrained networking and telecommunications hardware such as 1U rackmount switches, small form-factor optical transceivers, and embedded IoT edge gateways. It serves as an OEM cooling component in compact medical diagnostic analyzers, portable patient monitors, and point-of-care laboratory instruments requiring high-static air delivery through densely packed heatsinks. Additionally, maintenance technicians integrate this model across industrial automation facilities for replacement cooling in compact programmable logic controller (PLC) CPU modules, machine vision processing units, and high-density surveillance recording appliances.
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