Description
Delta ASB0412VHA-A (also known as ASB0412VHAA) is an ultra-compact brushless DC tubeaxial cooling fan measuring 40 × 40 × 10 mm (1.575 × 1.575 × 0.394 in) engineered for high-density electronic thermal management. Operating from a nominal 12 VDC supply, the integrated single-phase four-pole motor rotates at 8000 RPM to deliver 9.51 CFM (16.14 m³/h) of airflow against a maximum static pressure of 0.253 in H₂O (63.0 Pa). Constructed with durable UL 94V-0 flame-retardant thermoplastic for both frame and impeller, this model utilizes an engineered sleeve bearing system rated for 30,000 hours of continuous service at 40 °C. The unit includes dual AWG #28 lead wires with integrated polarity protection and locked-rotor impedance protection for safe, dependable continuous operation.
Key Features
- High-Density Airflow: Produces 9.51 CFM and 0.253 in H₂O static head from an ultra-thin 10 mm profile.
- Rugged Polymeric Construction: Employs UL 94V-0 flame-retardant plastic housing and impeller for demanding enclosure fire safety.
- Integrated Motor Safeguards: Features locked-rotor impedance protection preventing winding burnout up to 96 hours alongside reverse-polarity safety.
- Extended Operating Envelope: Maintains stable continuous aerodynamic performance from -10 °C up to +70 °C and high humidity.
- Compact Pre-Stripped Harness: Supplied with 309 mm UL 1007 AWG #28 lead wires for rapid point-to-point integration.
Technical Specifications
| Manufacturer | Delta |
|---|---|
| Manufacturer Part Number (MPN) | ASB0412VHA-A |
| Alternate Part Number | ASB0412VHAA |
| Delta Safety Model | ASB0412VHA-A |
| Product Series | ASB Series |
| Product Category | DC Axial Fans |
| Fan / Component Type | Brushless DC Tubeaxial Cooling Fan |
| Motor Design | Single Phase, 4-Pole Brushless DC Motor |
| Rated Voltage | 12 VDC |
| Operating Voltage Range | 7.0 to 13.8 VDC |
| Rated Current | 0.08 A |
| Max. Current Draw | 0.16 A |
| Safety Label Current | 0.16 A |
| Rated Input Power | 0.96 W |
| Max. Input Power | 1.92 W |
| Speed (RPM) | 8000 RPM |
| Airflow | 9.505 CFM (16.14 m³/h / 0.269 m³/min) |
| Min. Airflow | 8.079 CFM (13.73 m³/h / 0.229 m³/min) |
| Static Pressure | 0.253 in H₂O (63.0 Pa / 6.422 mmH₂O) |
| Min. Static Pressure | 0.183 in H₂O (45.5 Pa / 4.640 mmH₂O) |
| Noise Level | 32.5 dB(A) (Max. 37.5 dB(A)) |
| Acoustic Test Standard | 1 Meter Free Air in Anechoic Chamber (B&K Sound Level Meter) |
| Airflow Direction | Axial (Intake over Struts / Nameplate Side Exhaust) |
| Direction of Rotation | Clockwise (Viewed from Nameplate Side) |
| External Cover | Open Type |
| Dimensions (L × H × D) | 40.0 × 40.0 × 10.0 mm (1.575 × 1.575 × 0.394 in) |
| Mounting Hole Pitch | 32.0 ± 0.3 mm (1.260 ± 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 | Precision Sleeve Bearing |
| Weight | 13.5 g (0.030 lbs) |
| Termination & Cable Specs | 2 Lead Wires, UL 1007 AWG #28, Length: 309.0 ± 10.0 mm (12.165 ± 0.394 in) |
| Wiring Pinout / Connection | Red: Positive (+), Black: Negative (-) |
| Motor Protection | Locked Rotor Impedance Protection (96 Hours at Rated Voltage) & Overcurrent Shut Down |
| Polarity Protection | Reverse Polarity Withstanding 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 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 | 5% to 90% RH (Non-Condensing) |
| Storage Humidity | 5% to 95% RH (Non-Condensing) |
| Service Life (L10) | 30,000 Hours Continuous Operation at 40 °C (15% to 65% RH) |
| Standards & Compliance | UL, CSA, VDE, CE, RoHS Compliant, REACH |
Applications
The Delta ASB0412VHA-A tubeaxial fan is deployed across space-constrained electronics assemblies requiring focused heat dissipation across tightly packed heat sinks. Standard integration includes 1U rack-mount network appliances, managed PoE ethernet switches, optical communication transceivers, embedded industrial PCs, and single-board computer enclosures. It additionally serves as an exact OEM replacement fan in medical diagnostic monitors, laboratory bench instruments, and telecom power rectifier modules.
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