5 VDC Power Supply
The EFB0405MD is specified for 5 VDC operation with a documented 4.5–5.5 VDC operating voltage range. The manufacturer series table identifies 0.15 A input current and 0.75 W input power.
DELTA
Delta Electronics EFB0405MD DC Axial Fan 5VDC 40x40x20mm 7.17CFM
$7.32
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DELTA
Delta Electronics EFB0405MD DC Axial Fan 5VDC 40x40x20mm 7.17CFM
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$7.32
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PRODUCT DOCUMENTATION
Product Information
Technical specifications, features, applications and purchasing information.
Technical Specifications
| Brand | Delta Electronics |
| Model Number | EFB0405MD |
| Product Category | DC Axial Fan |
| Product Series | EFB 40 x 40 x 20 mm Series |
| Fan Type | DC Brushless Tubeaxial Cooling Fan |
| Frame Dimensions | 40 x 40 x 20 mm |
| Rated Voltage | 5 VDC |
| Operating Voltage Range | 4.5–5.5 VDC |
| Input Current | 0.15 A |
| Input Power | 0.75 W |
| Rated Speed | 6300 RPM |
| Maximum Free-Air Flow | 7.17 CFM (0.203 m³/min) |
| Maximum Static Pressure | 0.218 inH₂O (5.54 mmH₂O) |
| Acoustical Noise | 24.0 dB(A) |
| Bearing Type | Ball Bearings |
| Electrical Termination | 2 Lead Wires |
| Lead Wire Polarity | Red: Positive (+); Black: Negative (-) |
| Lead Wire Specification | UL1007 AWG24 or equivalent (rib-type series drawing) |
| Fan Frame Material | Plastic, UL 94 V-0 |
| Impeller Material | Plastic, UL 94 V-0 |
| Mounting Hole Spacing | 32.0 x 32.0 mm (series drawing) |
| Mounting Hole Diameter | 3.5 mm (series drawing) |
| Lead Wire Length | 330 ±10 mm (rib-type series drawing) |
| Weight | 33 g (series specification) |
| Operating Temperature | -10°C to +70°C (distributor specification) |
| Reference Lifetime | 70,000 hours at 40°C (distributor specification) |
| Protection | Locked-Rotor Protection (distributor specification) |
| Optional Functional Suffixes | -R00 and -F00 (series options; not assigned to base model) |
Key Features
40 x 40 x 20 mm Frame
The 40 mm square axial fan has a 20 mm depth. The manufacturer rib-type drawing identifies 32.0 mm mounting-hole spacing and 3.5 mm mounting holes.
6300 RPM Rated Speed
Delta specifies 6300 RPM as the typical rotational speed for the EFB0405MD at rated voltage in free air.
7.17 CFM Free-Air Flow
The manufacturer lists maximum free-air flow of 7.17 CFM and maximum static pressure of 0.218 inH₂O. These refer to different endpoints on the performance curve.
Ball Bearing Construction
Delta documents ball bearings and plastic frame and impeller materials classified UL 94 V-0. The typical noise level is listed at 24.0 dB(A).
Two-Wire Connection
The base model is listed with two wire leads for positive and negative DC power. The series also offers optional -R00 and -F00 functional variants; verify the complete suffix before specifying any additional signal output.
Applications
- Compact industrial control enclosure ventilation
- Embedded electronic module cooling
- Compact power supply ventilation
- Telecommunications equipment thermal management
- Electronic instrumentation enclosure airflow
- Networking and computing hardware cooling
- Small power electronics forced-air cooling
- Maintenance of compatible 5 VDC 40 mm axial fan assemblies
Purchase Information
We support online purchase of the Delta Electronics EFB0405MD DC Axial Fan. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.
Frequently Asked Questions
What is Delta Electronics EFB0405MD?
EFB0405MD is a Delta Electronics 5 VDC brushless tubeaxial cooling fan in the 40 x 40 x 20 mm EFB series, with ball bearings and a two-wire power connection.
What is the rated supply voltage of EFB0405MD?
Delta specifies a nominal supply voltage of 5 VDC and an operating range of 4.5–5.5 VDC.
What are the dimensions of EFB0405MD?
The fan frame measures 40 x 40 x 20 mm. The Delta rib-type series drawing shows a 32.0 mm square mounting-hole pattern and 3.5 mm mounting holes.
What is the input current of EFB0405MD?
The manufacturer series table specifies 0.15 A at the rated 5 VDC supply. A separate maximum current value should not be assumed from this typical catalog rating.
What input power is specified?
The Delta catalog gives an input power of 0.75 W for EFB0405MD at its nominal supply voltage.
What is the rated fan speed?
The Delta EFB 40 x 40 x 20 mm series table lists 6300 RPM for EFB0405MD under nominal free-air test conditions.
What is the maximum airflow of EFB0405MD?
The manufacturer specifies 7.17 CFM (0.203 m³/min) maximum free-air flow. Installed airflow depends on the equipment air-path resistance.
What is the maximum static pressure?
The manufacturer lists 0.218 inH₂O (5.54 mmH₂O) at zero airflow. This is not the pressure available at the maximum free-air-flow point.
What is the documented acoustic noise level?
Delta specifies 24.0 dB(A), measured in an anechoic environment in free air at one meter from the intake side.
What bearing system does EFB0405MD use?
Delta and major component distributors specify ball bearings. The catalog identifies plastic frame and impeller components classified UL 94 V-0.
Does EFB0405MD have two wires or a speed-feedback output?
DigiKey and Mouser list the base EFB0405MD with two wire leads. Delta offers optional -R00 and -F00 functional versions in the series, so the base model should not be assumed to provide a separate sensor lead.
What should be checked before ordering Delta EFB0405MD?
Verify the complete EFB0405MD model marking, 5 VDC supply, 0.15 A input rating, 40 x 40 x 20 mm housing, mounting-hole pattern, 7.17 CFM airflow requirement, ball bearing specification and two-wire polarity. Check any additional suffix against its corresponding wiring diagram.
Need help confirming a model?
Send us your part number and technical requirements.
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