Description
The Delta BFB0305HA-CR00 (also known as BFB0305HACR00) is an ultra-compact DC brushless centrifugal blower engineered for precision spot-cooling in space-restricted electronics, measuring just 30.0 × 30.0 × 10.0 mm (1.18 × 1.18 × 0.39 in). Operating on a nominal 5.0 VDC supply (4.5 to 5.5 VDC range), this micro blower delivers an airflow of 1.45 CFM (2.46 m³/h) and a maximum static pressure of 0.285 in H₂O (71.0 Pa) at an operational speed of 7,500 RPM with an average power draw of only 0.65 W. Constructed with flame-retardant UL 94V-0 thermoplastic housing and impeller, the assembly utilizes a high-reliability dual ball bearing system that delivers an L10 service life of 30,000 hours at 40°C. Electrical connectivity is established via three flexible UL 1571 AWG #30 lead wires providing power, ground, and an open-collector rotation detect (RD) locked-rotor alarm circuit.
Key Features
- High-Density Aerodynamics: Produces 1.45 CFM airflow and 0.285 in H₂O static pressure within a compact micro blower frame.
- Dual Ball Bearings: Heavy-duty dual ball bearing system ensures a continuous L10 operating life exceeding 30,000 hours at 40°C.
- Hardware Rotation Detect: Integrated open-collector RD signal output alerts system controllers instantly during motor stall or locked rotor conditions.
- Flame-Retardant Construction: Precision-molded UL 94V-0 thermoplastic frame and impeller provide rigorous flammability protection and mechanical stability.
- Comprehensive Electrical Safeguards: Features integrated reverse polarity withstand protection alongside automatic overcurrent and locked-rotor shutdown circuitry.
Technical Specifications
| Manufacturer | Delta |
|---|---|
| Manufacturer Part Number (MPN) | BFB0305HA-CR00 |
| Alternate Part Number | BFB0305HACR00 |
| Delta Safety Model Number | BFB0305HA-C |
| Product Series | BFB Series |
| Product Category | DC Blower Fans |
| Fan / Component Type | Brushless DC Centrifugal Blower |
| Phase & Supply Type | Single-Phase DC |
| Rated Voltage | 5.0 VDC |
| Operating Voltage Range | 4.5 to 5.5 VDC |
| Rated Current (Average) | 0.13 A |
| Max. Current Draw | 0.20 A |
| Safety Label Current | 0.24 A |
| Power Rating (Average) | 0.65 W |
| Max. Input Power | 1.00 W |
| Rated Speed | 7500 RPM (±20%) |
| Max. Airflow (Zero Static Pressure) | 1.45 CFM (0.041 m³/min / 2.46 m³/h) |
| Min. Airflow Specification | 1.17 CFM (0.033 m³/min / 1.98 m³/h) |
| Max. Static Pressure (Zero Airflow) | 0.285 in H₂O (7.24 mmH₂O / 71.0 Pa) |
| Min. Static Pressure Specification | 0.182 in H₂O (4.63 mmH₂O / 45.4 Pa) |
| Acoustical Noise Level (Average) | 29.0 dB(A) |
| Max. Acoustical Noise Level | 34.0 dB(A) |
| Airflow & Pressure Orientation | Radial centrifugal discharge through rectangular scroll exhaust |
| Dimensions (L × H × D) | 30.0 × 30.0 × 10.0 mm (1.18 × 1.18 × 0.39 in) |
| Housing Material | Plastic (UL 94V-0) |
| Impeller Material | Plastic (UL 94V-0) |
| Bearing Type | Two Ball Bearings |
| Direction of Rotation | Clockwise (viewed from nameplate side) |
| Weight | 10.0 g (0.022 lbs / 0.35 oz) |
| Termination & Cable Specs | 3 Discrete Lead Wires, UL 1571 AWG #30 |
| Wiring Pinout / Connection | Red Wire: Positive (+), Black Wire: Negative (-), Blue Wire: RD Signal (R00) |
| Control / Signal Features | Rotation Detect (RD) Locked Rotor Alarm (Open Collector Mode, VRD Max 5.5V, Ic Max 5mA, Vce Max 0.5V) |
| Motor Protection | Locked Rotor Protection (Winding Impedance Protected for 96 Hours), Overcurrent Shutdown, Polarity Protection |
| Insulation Class | UL Class A |
| Insulation Resistance | 10 MΩ minimum at 500 VDC (between frame and positive terminal) |
| Dielectric Strength | 5 mA maximum at 500 VAC 50/60 Hz for 1 minute (between frame and positive terminal) |
| Operating Temperature Range | -10°C to +70°C (14°F to 158°F) |
| Storage Temperature Range | -40°C to +75°C (-40°F to 167°F) |
| Operating Humidity Range | 5% to 90% RH |
| Storage Humidity Range | 5% to 95% RH |
| Service Life (L10) | 30,000 Hours continuous operation at 40°C (15% to 65% RH) |
| Standards & Compliance | CE, cURus, TUV, RoHS Compliant |
Applications
The Delta BFB0305HA-CR00 micro centrifugal blower delivers targeted forced-air convection across microelectronics, dense portable medical diagnostics, handheld instrumentation, and thermal imaging cameras. Its high-pressure scroll configuration makes it ideal for ducted cooling over localized microprocessors in single-board computers, embedded telecommunication transceivers, and point-of-sale terminal housings. Additionally, industrial automation engineers deploy this blower within vision sensors, laboratory analytical instruments, and compact optic projection engines requiring continuous thermal dissipation.
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