24 VDC Brushless Cooling
Delta Electronics EFB0424HD is a DC brushless axial fan rated at 24 VDC, 0.06 A and 1.44 W. DigiKey specifies an operating voltage range of 14.0–27.6 VDC for this complete model.
DELTA
Delta Electronics EFB0424HD DC Axial Fan 24VDC 40x40x20mm 8.54CFM
$8.81
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DELTA
Delta Electronics EFB0424HD DC Axial Fan 24VDC 40x40x20mm 8.54CFM
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$8.81
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PRODUCT DOCUMENTATION
Product Information
Technical specifications, features, applications and purchasing information.
Technical Specifications
| Brand | Delta Electronics |
| Model Number | EFB0424HD |
| Product Category | DC Axial Fan |
| Product Series | EFB Series |
| Fan Type | DC Brushless Tubeaxial Fan |
| Frame Dimensions | 40 x 40 x 20 mm |
| Rated Voltage | 24 VDC |
| Operating Voltage Range | 14.0–27.6 VDC |
| Rated Current | 0.06 A |
| Input Power | 1.44 W |
| Rated Speed | 7600 RPM |
| Maximum Free-Air Flow | 8.54 CFM (0.242 m³/min; manufacturer product listing) |
| Distributor Airflow Rounding | 8.5 CFM (approximately 0.238 m³/min; DigiKey) |
| Maximum Static Pressure | 0.303 inH₂O (approximately 7.69 mmH₂O) |
| Acoustical Noise | 28.5 dB(A) |
| Bearing System | Ball Bearings |
| Frame Material | Plastic |
| Impeller Material | Plastic |
| Electrical Termination | 2 Lead Wires |
| Protection Function | Locked-Rotor Protection |
| Operating Temperature | -10°C to +70°C |
| Reference Weight | Approximately 33 g |
Key Features
40 x 40 x 20 mm Frame
The fan uses a 40 mm square housing with 20 mm depth. Its compact dimensions support forced-air ventilation in electronic equipment with a matching fan mounting interface.
7600 RPM Rated Speed
The manufacturer product listing and major electronics distributors identify a rated rotational speed of 7600 RPM under the stated nominal operating conditions.
8.54 CFM Free-Air Flow
Delta lists 8.54 CFM maximum free-air flow and 0.303 inH₂O maximum static pressure. The airflow and pressure figures represent separate operating points, not simultaneous performance.
Ball Bearing Construction
EFB0424HD uses ball bearings with plastic frame and impeller components. The published acoustical noise rating is 28.5 dB(A), and the listed unit weight is approximately 33 g.
Two-Wire Electrical Connection
The base EFB0424HD uses two power leads and provides locked-rotor protection. The separately designated -CP5 model has four wires, PWM control, tachometer feedback and IP55 protection; its specifications differ.
Applications
- Industrial electronic enclosure ventilation
- Compact 24 VDC power supply cooling
- Embedded controller thermal management
- Telecommunications equipment airflow
- Electronic test and measurement instrument ventilation
- Networking equipment cooling assemblies
- Compact power electronics forced-air cooling
- Maintenance of compatible 40 mm axial fan installations
Purchase Information
We support online purchase of the Delta Electronics EFB0424HD 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 EFB0424HD?
EFB0424HD is a Delta Electronics 24 VDC brushless axial cooling fan in the EFB series. Its dimensions are 40 x 40 x 20 mm, and the base model uses two power leads.
What is the rated voltage of EFB0424HD?
The manufacturer and major distributors specify 24 VDC. DigiKey lists an operating voltage range of 14.0–27.6 VDC for the complete EFB0424HD model.
What are the physical dimensions?
The fan has a 40 x 40 mm square frame and a housing depth of 20 mm. Check the mounting-hole pattern, cable clearance and airflow orientation against the equipment.
What is the rated input current?
Delta, DigiKey and Mouser list a rated current of 0.06 A for the unsuffixed EFB0424HD.
What is the input power?
The published input power is 1.44 W at the rated 24 VDC supply.
What is the rotational speed?
The specified rotational speed is 7600 RPM. Performance may vary with supply voltage and airflow restrictions.
What is the maximum airflow?
Delta lists 8.54 CFM (0.242 m³/min) maximum free-air flow. DigiKey rounds this to approximately 8.5 CFM. Actual installed airflow depends on system resistance.
What is the maximum static pressure?
The published maximum static pressure is 0.303 inH₂O, approximately 7.69 mmH₂O. It is measured at zero airflow, rather than at the maximum free-air-flow point.
What is the acoustical noise rating?
The manufacturer and major component distributors specify 28.5 dB(A). Actual equipment noise depends on installation and operating conditions.
What bearing system does EFB0424HD use?
The fan uses ball bearings and plastic frame and impeller materials. Distributors identify a reference service life of 70,000 hours at 40°C, which is not a guaranteed operating duration.
Does EFB0424HD have PWM control or tachometer feedback?
The unsuffixed EFB0424HD is listed as a two-wire fan without separate PWM or tachometer leads. EFB0424HD-CP5 is a different four-wire version with PWM control, speed sensing and IP55 protection; its airflow and current ratings also differ.
What should be checked before ordering Delta EFB0424HD?
Confirm the complete EFB0424HD marking and any additional suffix, 24 VDC supply, 0.06 A current rating, 40 x 40 x 20 mm dimensions, 7600 RPM speed, 8.54 CFM airflow requirement, mounting-hole geometry, two-wire termination and equipment operating conditions.
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