Description
Delta Electronics ASB0305LA-DR00 (also known as ASB0305LADR00) is a compact 30x30x10 mm (1.181×1.181×0.394 in) DC brushless tubeaxial cooling fan designed for ultra-dense embedded thermal management. Operating from a nominal 5.0 VDC supply (4.5 to 5.5 VDC range), it delivers 3.21 CFM (5.46 m³/h) of airflow and 0.131 in H₂O (32.6 Pa) of static pressure at 8000 RPM while consuming just 0.50 W. Built with flame-retardant UL 94V-0 plastic housing and impeller assemblies, the fan features an integrated open-collector rotation detect (RD) locked-rotor alarm wire, impedance motor protection, and reverse polarity tolerance. Electrical connection is established via three 150 mm UL 1061 AWG #28 lead wires for straightforward integration into low-profile electronics.
Key Features
- Precision Aerodynamic Design: Delivers 3.21 CFM airflow and 32.6 Pa static pressure within an ultra-compact 30 mm square frame.
- Low-Power 5VDC Motor: Consumes only 0.50 W nominal power draw with an efficient operating voltage window of 4.5–5.5 VDC.
- Integrated Lock Sensor (RD): Features a dedicated third blue wire open-collector rotation detection circuit for real-time rotor fault monitoring.
- Robust Electrical Protection: Engineered with 96-hour locked rotor impedance protection and comprehensive reverse supply polarity tolerance.
- UL 94V-0 Rated Construction: Fabricated from flame-retardant thermoplastic housing and impeller materials for demanding commercial and industrial deployments.
Technical Specifications
| Manufacturer | Delta |
|---|---|
| Manufacturer Part Number (MPN) | ASB0305LA-DR00 |
| Alternate Part Number | ASB0305LADR00 |
| Product Series | ASB Series |
| Product Category | DC Axial Fans |
| Fan / Component Type | DC Brushless Tubeaxial Fan |
| Supply Type | DC |
| Rated Voltage | 5.0 VDC |
| Operating Voltage Range | 4.5 to 5.5 VDC |
| Min. Starting Voltage | 4.0 VDC Max |
| Rated Speed (RPM) | 8000 RPM (±15%) |
| Rated Power Rating | 0.50 W |
| Max. Input Power | 0.85 W |
| Rated Current | 0.10 A |
| Max. Current Draw | 0.17 A |
| Safety Label Current | 0.17 A |
| Airflow | 3.21 CFM (5.46 m³/h, 0.091 m³/min) |
| Min. Airflow at Zero Static Pressure | 2.73 CFM (4.64 m³/h, 0.077 m³/min) |
| Static Pressure | 0.131 in H₂O (32.6 Pa, 3.33 mmH₂O) |
| Min. Static Pressure at Zero Airflow | 0.094 in H₂O (23.5 Pa, 2.40 mmH₂O) |
| Noise Level | 21.0 dB(A) |
| Max. Noise Level | 25.5 dB(A) |
| Acoustic Test Distance | 1.0 m in Free Air Anechoic Chamber |
| 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 ± 0.012 in) |
| Mounting Hole Diameter | 4 × Ø3.2 ± 0.3 mm (Ø0.126 ± 0.012 in) |
| Housing Material | Plastic (UL 94V-0) |
| Impeller Material | Plastic (UL 94V-0) |
| Bearing Type | Sleeve Bearing |
| Direction of Rotation | Counterclockwise (CCW) viewed from air flow inlet |
| Weight | 7.4 g (0.0163 lbs / 0.26 oz) |
| Termination & Cable Specs | 3 Wire Leads, UL 1061 AWG #28, Length 150.0 ± 10.0 mm (5.906 ± 0.394 in), Twisted 2–3 Turns |
| Wiring Pinout / Connection | Red: Positive (+), Black: Negative (-), Blue: Lock Signal (-R00 / RD) |
| Rotation Detect (RD) Circuit Mode | Open Collector Mode |
| RD Signal Collector Voltage (Vce) | 5.5 VDC Max |
| RD Signal Collector Current (Ic) | 5 mA Max |
| RD Saturation Voltage (Vce sat) | 0.5 V Max |
| Motor Protection | Locked Rotor Impedance Protection (96 Hours at Rated Voltage) |
| 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 to +70 °C (14 to 158 °F) |
| Storage Temperature | -40 to +75 °C (-40 to 167 °F) |
| Operating Humidity | 5 to 90 % RH |
| Storage Humidity | 5 to 95 % RH |
| Service Life (L10) | 20,000 Hours Continuous Operation at 40 °C, 65% RH |
| Standards & Compliance | cURus, TUV, RoHS Compliant, Zero ODS (No PBBs, PBBOs, CFCs, PBBEs, PBDPEs, HCFCs) |
Applications
Delta ASB0305LA-DR00 axial cooling fans are engineered specifically for highly constrained thermal cavities across edge-computing hardware, network appliance routers, and embedded single-board computers. They provide vital localized forced-air spot cooling across optical transceiver cages, telecom transponders, power conversion modules, and portable medical diagnostic equipment. System engineers and maintenance technicians also deploy this compact assembly as a direct-fit replacement for low-profile industrial instrumentation, barcode scanners, and handheld analytical devices requiring active rotor-lock telemetry.
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