Description
The Sunon EEC0381B1-000U-A99 (also known as EEC0381B1000UA99) is an industrial-grade 120 x 120 x 38 mm (4.72 x 4.72 x 1.50 in) DC brushless tubeaxial cooling fan engineered for continuous forced-air convection in demanding electronics enclosures. Driven by an efficient 2-phase, 4-pole motor operating on a 12 VDC nominal supply (6.0 to 13.8 VDC range), it delivers 138 CFM (234.5 m³/h) of volumetric airflow against 0.36 in H₂O (89.7 Pa) static pressure at a rated speed of 3100 RPM and 10 W power consumption. Constructed with flame-retardant UL 94V-0 thermoplastic PBT housing and impellers, the fan integrates a precision dual ball bearing system yielding an L10 service life of 70,000 hours at 40°C. Electrical safety and reliability are maximized through integrated reverse polarity protection, locked-rotor electronic shutdown with automatic restart, and two UL1007 24 AWG wire leads.
Key Features
- High-Flow Tubeaxial Aerodynamics: Delivers 138 CFM at 3100 RPM to overcome dense thermal impedance in enclosed chassis.
- Precision Dual Ball Bearings: Heavy-duty dual ball bearing system provides 70,000 hours of continuous service life at 40°C.
- Electronic Motor Safeguards: Integrates reverse polarity protection and automatic locked-rotor recovery that restarts within ten seconds.
- UL 94V-0 Rated PBT Construction: High-rigidity thermoplastic frame and blades provide exceptional dimensional stability and flame retardancy.
- Wide Voltage Flexibility: Supports an operating range of 6.0 to 13.8 VDC with reliable 6.0 VDC startup.
Technical Specifications
| Manufacturer | Sunon |
|---|---|
| Manufacturer Part Number (MPN) | EEC0381B1-000U-A99 |
| Alternate Part Number | EEC0381B1000UA99 |
| Sunon Specification Number | D12017220G-05 |
| Engineering Specification | E10700040 |
| Product Series | EEC Series |
| Product Category | DC Axial Fans |
| Fan / Component Type | Tubeaxial Cooling Fan |
| Motor Design | 2 phases, 4-poles Brushless DC motor |
| Supply Type | DC |
| Rated Voltage | 12 VDC |
| Operating Voltage Range | 6.0 to 13.8 VDC |
| Starting Voltage | 6.0 VDC (at 25°C power on/off) |
| Rated Current | 833 mA (0.833 A) |
| Max. Current Draw | 958 mA (0.958 A) |
| Rated Power Consumption | 10.0 W |
| Max. Power Consumption | 11.50 W |
| Rated Speed (RPM) | 3100 RPM ± 10% |
| Airflow | 138.0 CFM (234.5 m³/h / 3.86 m³/min) |
| Static Pressure | 0.36 in H₂O (89.7 Pa / 9.14 mmH₂O) |
| Acoustic Noise Level | 48.0 dB(A) |
| Noise Test Standard | 1 meter semi-anechoic intake measurement (background < 15 dB(A)) |
| Airflow & Pressure Standard | AMCA 210 / DIN 24163 double chamber exhaust method |
| Airflow Direction | Intake over struts / exhaust past motor |
| Direction of Rotation | Counter-clockwise viewed from front of fan blade |
| Dimensions (L × H × D) | 120 × 120 × 38 mm (4.72 × 4.72 × 1.50 in) |
| Mounting Hole Configuration | 8 holes, Diameter 4.3 mm (0.169 in) |
| Mounting Hole Pitch | 104.8 ± 0.3 mm (4.13 in) |
| Frame Material | Thermoplastic PBT (UL 94V-0) |
| Impeller Material | Thermoplastic PBT (UL 94V-0) |
| Bearing Type | Precision Ball Bearing System (2 Ball) |
| Weight | 214 g (0.472 lbs) |
| Termination & Cable Specs | 2 Lead Wires, UL1007 AWG #24, Length 330 ± 15 mm (13.0 ± 0.59 in) |
| Lead Wire Strip Length | 5.0 ± 0.5 mm (0.20 in) |
| Wiring Pinout / Connection | Red: Positive (+), Black: Negative (-) |
| Motor Protection | Reverse Polarity Protection & Automatic Restart (auto-restart within 10 s upon rotor lock) |
| Insulation Class | UL Class A |
| Insulation Resistance | >= 10 MΩ at 500 VDC between internal stator/housing and lead wire (+) |
| Dielectric Strength | 500 VAC for 1 minute or 600 VAC for 2 seconds between housing and lead wire (+) |
| Service Life (L10) | 70,000 Hours at 40°C, 65% RH, 90% Confidence Level |
| Operating Temperature Range | -10°C to +70°C (14°F to 158°F) |
| Storage Temperature Range | -40°C to +80°C (-40°F to 176°F) |
| Shock Proof Resistance | 100 G force applied in X, Y, Z axes for 2 ms each |
| Vibration Proof Resistance | 2 mm amplitude, 5-55-5 Hz frequency across X, Y, Z axes for 3 hours total |
| Humidity Proof Test | 96 continuous hours at 90% to 95% RH, 60°C ± 2°C |
| Standards & Safety Approvals | UL (E77551), CUR (E77551), TUV, CE, UKCA |
| Environmental Compliance | RoHS Directive 2011/65/EU Compliant |
Applications
The Sunon EEC0381B1-000U-A99 DC axial fan is engineered for thermal dissipation across industrial automation equipment, variable frequency drive cabinets, and programmable logic controller racks. Its deep frame construction supports high static pressure requirements in telecommunications base stations, network storage servers, and uninterruptible power supply banks. Plant maintenance engineers and original equipment manufacturers also deploy this fan within automated test fixtures, solar inverter housings, and commercial power distribution enclosures.
Reviews
There are no reviews yet.