Description
Delta ASB0305MA-D (also known as ASB0305MAD) is a compact, high-efficiency DC brushless tubeaxial cooling fan measuring 30.0 x 30.0 x 10.0 mm (1.18 x 1.18 x 0.39 in). Engineered for localized thermal management in dense microelectronics, it operates on a nominal 5 VDC supply across a 4.5 to 5.5 VDC range, delivering 3.72 CFM (6.32 m³/h) of airflow and 0.167 in H₂O (41.7 Pa) static pressure at a rated speed of 9000 RPM. The unit is constructed with flame-retardant UL 94V-0 thermoplastic housing and impeller, supported by a precision sleeve bearing system rated for 20,000 operating hours at 40°C. Standard electrical integration includes dual UL 1061 AWG #28 lead wires and built-in impedance locked-rotor and polarity protection.
Key Features
- High-Speed Micro Flow: Delivers 3.72 CFM of forced-air cooling at 9000 RPM within an ultra-compact 30 mm square footprint.
- Flame-Retardant Thermoplastic: Features UL 94V-0 rated reinforced plastic frame and impeller for superior structural rigidity and safety.
- Impedance Motor Protection: Integrated winding impedance safeguards motor circuitry from burnout during continuous 96-hour locked-rotor conditions.
- Acoustically Tuned Profile: Emits a low 23.0 dB(A) sound level at one meter for noise-sensitive electronic enclosures.
- Pre-Stripped Lead Wire: Equipped with 150 mm UL 1061 AWG #28 wiring for fast, reliable board and harness integration.
Technical Specifications
| Manufacturer | Delta |
|---|---|
| Manufacturer Part Number (MPN) | ASB0305MA-D |
| Alternate Part Number | ASB0305MAD |
| Product Series | ASB Series |
| Product Category | DC Axial Fans |
| Fan / Component Type | Tubeaxial Fan |
| Supply Type | DC |
| Rated Voltage | 5 VDC |
| Operating Voltage Range | 4.5 to 5.5 VDC |
| Minimum Starting Voltage | 4.0 VDC |
| Rated Current | 0.11 A |
| Max. Current Draw | 0.19 A |
| Safety Current on Label | 0.19 A |
| Rated Power | 0.55 W |
| Max. Input Power | 0.95 W |
| Rated Speed (RPM) | 9000 RPM (±15%) |
| Airflow | 3.72 CFM (6.32 m³/h / 0.105 m³/min) |
| Minimum Airflow Rating | 3.05 CFM (5.18 m³/h / 0.086 m³/min) |
| Static Pressure | 0.167 in H₂O (41.7 Pa / 4.25 mmH₂O) |
| Minimum Static Pressure | 0.112 in H₂O (28.0 Pa / 2.86 mmH₂O) |
| Noise Level | 23.0 dB(A) (Max. 27.5 dB(A)) |
| Airflow Direction | Axial (Intake Over Struts) |
| Direction of Rotation | Counterclockwise (CCW viewed from front/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 (4 × Ø0.126 in) |
| Housing Material | Plastic (UL 94V-0) |
| Impeller Material | Plastic (UL 94V-0) |
| Bearing Type | Sleeve Bearing |
| Weight | 7.4 g (0.0163 lbs / 0.26 oz) |
| Termination & Cable Specs | 2 Wire Leads, UL 1061 AWG #28, 150 ± 10 mm (5.906 ± 0.394 in) |
| Wiring Pinout | Red Wire: Positive (+), Black Wire: Negative (-) |
| Motor Protection | Impedance Protected (Locked Rotor up to 96 Hours), Polarity Protection |
| 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 1 minute (between frame and (+) terminal) |
| External Cover | Open Type |
| 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 | 0% to 95% RH |
| Service Life (L10) | 20,000 Hours continuous operation at 40 °C, 65% RH |
| Standards & Compliance | cURus, TUV, CE, RoHS Compliant |
Applications
Delta ASB0305MA-D is deployed across space-constrained electronic assemblies requiring dependable low-voltage forced convection cooling. It is routinely integrated into optical transceivers, network interface cards, portable test instruments, and compact single-board computer enclosures. MRO specialists and system builders also rely on this micro-fan for spot-cooling embedded processors in medical diagnostic monitors, edge IoT gateways, and barcode scanning terminals.
Reviews
There are no reviews yet.