Description
Delta ASB0305HA-DF00 (also known as ASB0305HADF00) is a high-speed, compact brushless DC tubeaxial cooling fan engineered for space-constrained electronics, measuring 30.0 x 30.0 x 10.0 mm (1.181 x 1.181 x 0.394 in). Operating on a nominal 5 VDC supply with a low 0.70 W power draw, this unit delivers an airflow of 4.30 CFM (7.32 m³/h) and a static pressure of 0.214 in H₂O (53.35 Pa) at 10,500 RPM. Constructed with flame-retardant UL 94V-0 plastic housing and impeller, it incorporates a precision sleeve bearing mechanism rated for 20,000 hours of continuous service at 40°C. Connectivity and system monitoring are facilitated through 150 mm UL 1061 AWG #28 lead wires featuring an integrated open-collector frequency generator (tachometer) output.
Key Features
- High-Velocity Micro Aerodynamics: Delivers 4.30 CFM airflow and 0.214 in H₂O pressure at 10,500 RPM within a 30x10mm profile.
- Low-Power 5VDC Operation: Consumes only 0.70 W nominal power with a flexible operating supply range spanning 4.5 to 5.5 VDC.
- Integrated Tachometer Output: Features an open-collector frequency generator third-wire signal for real-time rotational speed verification and hardware telemetry.
- Robust Circuit Protection: Engineered with reverse polarity protection and impedance-protected motor windings capable of enduring 96-hour locked rotor states.
- UL 94V-0 Flame-Retardant Build: Manufactured using high-grade thermoplastic frame and impeller materials meeting stringent flammability and industrial safety standards.
Technical Specifications
| Manufacturer | Delta |
|---|---|
| Manufacturer Part Number (MPN) | ASB0305HA-DF00 |
| Alternate Part Number | ASB0305HADF00 |
| Product Series | ASB Series |
| Product Category | DC Axial Fans |
| Fan / Component Type | Brushless DC Tubeaxial Fan |
| Supply Type | DC |
| Rated Voltage | 5 VDC |
| Operating Voltage Range | 4.5 to 5.5 VDC |
| Min. Starting Voltage | 4.0 VDC (Max at 25°C) |
| Rated Current | 0.14 A |
| Max. Current Draw | 0.24 A (Safety Label: 0.24 A) |
| Power Rating | 0.70 W |
| Max. Input Power | 1.20 W |
| Speed (RPM) | 10,500 RPM (±15%) |
| Airflow | 4.30 CFM (0.122 m³/min / 7.32 m³/h) |
| Min. Airflow (At Zero Static Pressure) | 3.65 CFM (0.103 m³/min / 6.18 m³/h) |
| Static Pressure | 0.214 in H₂O (5.44 mmH₂O / 53.35 Pa) |
| Min. Static Pressure (At Zero Airflow) | 0.154 in H₂O (3.93 mmH₂O / 38.54 Pa) |
| Noise Level | 27.0 dB(A) (Max: 32.0 dB(A)) |
| Airflow Direction | Intake over struts / Axial exhaust |
| Direction of Rotation | Counterclockwise (viewed from front airflow inlet) |
| 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 in) |
| Mounting Hole Diameter | 4 × Ø3.2 ± 0.3 mm (Ø0.126 in) |
| Housing Material | Thermoplastic Plastic (UL 94V-0) |
| Impeller Material | Thermoplastic Plastic (UL 94V-0) |
| Bearing Type | Sleeve Bearing |
| External Cover | Open Type |
| Weight | 7.4 g (0.016 lbs / 0.26 oz) |
| Termination & Cable Specs | 3 Wire Leads, UL 1061 AWG #28, 150.0 ± 10.0 mm (5.91 ± 0.39 in), Stripped 10.0 mm, Twisted 2-3 turns |
| Wiring Pinout / Connection | Red Wire: Positive (+), Black Wire: Negative (-), Blue Wire: Frequency Generator (FG Tachometer) |
| Control / Signal Features | Frequency Generator (FG) Open-Collector Tachometer Output (Vce max 0.5V, Ic max 5mA, Vfg max 5.0VDC, 4 Pulses per Revolution) |
| Motor Protection | Impedance Protected (Motor winding protected against fire for 96 hours in locked rotor condition at rated voltage) |
| Reverse Polarity Protection | Withstands reverse connection of positive and negative leads |
| Insulation Class | UL: Class A |
| Insulation Resistance | 10 MΩ min. at 500 VDC (between frame and (+) terminal) |
| Dielectric Strength | 5 mA max. at 500 VAC, 50/60 Hz for 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 | 0 to 90% RH |
| Storage Humidity | 0 to 95% RH |
| Service Life (L10) | 20,000 Hours continuous operation at 40°C with 65% RH |
| Standards & Compliance | cURus, TUV, CE, RoHS Compliant, Zero Ozone Depleting Substances (No PBBs, PBBOs, CFCs, PBBEs, PBDPEs, HCFCs) |
Applications
Delta ASB0305HA-DF00 provides localized forced-air spot cooling across high-density computing and communication architectures such as optical transceivers, network interface cards, and miniature single-board industrial computers. It is commonly integrated into portable medical diagnostic analyzers, handheld instrumentation, and embedded Internet of Things gateways where ultra-compact thermal dissipation is critical. Maintenance technicians and systems engineers deploy this micro axial fan as an exact replacement component within compact security surveillance recorders, drone electronic speed controllers, and point-of-sale terminal enclosures.
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