MEC0252V1-000U-A99 - 24V 120mm Vapo-Bearing DC Fan | Sunon
MPN: MEC0252V1-000U-A99 ✓ Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MEC0252V1-000U-A99 Overview
An axial DC fan is an air-moving device that creates pressure and airflow along its rotational axis. In thermal-management systems, it belongs to the hierarchy of cooling equipment: fan -> axial fan -> DC brushless fan -> electronic thermal-management component. Unlike a centrifugal blower, this square axial fan moves air through the fan face and is designed for mounting against a panel, grille, or equipment opening.
The MEC0252V1-000U-A99 combines a compact 120 x 120 x 25 mm format with 24 VDC operation and Vapo-Bearing technology. Its two-wire configuration is intended for basic power connection without tachometer or PWM speed-control feedback. The auto-restart feature supports recovery after a stalled or obstructed rotor condition, helping maintain cooling protection in industrial and commercial equipment.
The fan is specified at 108.2 CFM airflow and 0.28 inches H2O static pressure according to distributor listings. Sunon performance testing is described using an exhaust method with a double chamber in accordance with AMCA 210 or DIN 24163. These test conditions help engineers compare fan curves, although system resistance and airflow direction should still be verified in the final mechanical design.
Typical uses include control-panel ventilation, power supplies, industrial equipment cabinets, test equipment, and electronics enclosures. The 24 V supply is common in industrial systems, telecom equipment, and embedded electronics. The two-wire lead arrangement simplifies installation, but applications requiring fan-speed monitoring or variable-speed control should choose a model with tachometer or PWM leads.
Mechanical fit, airflow direction, connector details, and operating limits must be checked against the applicable Sunon datasheet before production. In particular, verify the exact mounting-hole pattern and confirm that the enclosure can accept the fan’s 25 mm depth and airflow direction. For design support, compare airflow at the actual system pressure rather than using free-air CFM alone.
This page consolidates verified distributor specifications, application context, and engineering selection considerations for the MEC0252V1-000U-A99. It is intended to help engineers identify whether this 24 V, 120 mm Vapo-Bearing fan is suitable for a given thermal-management design and to locate the authoritative manufacturer documentation.
Drop-in alternatives for MEC0252V1-000U-A99 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MEC0252V1-000U-G99
✅ Drop-In📋 Reference alternative (not in catalog)
MEC0252V1-000U-A99-TW
✅ Drop-In📋 Reference alternative (not in catalog)
MEC0252V1-0000-A99
✅ Drop-In📋 Reference alternative (not in catalog)
MEC0252V1-000C-F99
✅ Drop-In📋 Reference alternative (not in catalog)
MEC0252V1
✅ Drop-In📋 Reference alternative (not in catalog)
MEC0252V1-000U-A99 Specifications
| Product Type | DC brushless axial fan |
| Nominal Voltage | 24 VDC |
| Frame Size | 120 mm x 120 mm x 25 mm |
| Airflow | 108.2 CFM (3.03 m³/min) |
| Static Pressure | 0.28 inches H2O |
| Bearing Type | Vapo-Bearing |
| Wire Configuration | 2 wire leads |
| Fan Type | Axial fan |
| Housing Shape | Square |
| Test Standard | AMCA 210 or DIN 24163 performance measurement method |
MEC0252V1-000U-A99 standard Pin Configuration Guide
Pin configuration for MEC0252V1-000U-A99 (standard package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for MEC0252V1-000U-A99.
Refer to the datasheet for full pin configuration.
Typical Applications
MEC0252V1-000U-A99 is suitable for 6 applications: Industrial Control Panel Ventilation, 24 V Power Supply Enclosure, Telecom and Network Equipment Cabinet, Test and Measurement Instrument Housing, Embedded Electronics and Robotics Enclosure, LED Driver and Lighting Power Electronics.
Industrial Control Panel Ventilation
The MEC0252V1-000U-A99 fits a 24 VDC control-panel cooling architecture where a 120 mm square fan can be mounted against a filtered or guarded opening. Its verified 108.2 CFM airflow provides a useful starting point for removing heat from drives, relays, power converters, and logic modules. The 0.28 inches H2O rating can help move air through a grille, but the actual flow must be checked at the assembled system resistance. The two-wire configuration simplifies field wiring when RPM monitoring is not required.
Recommended
24 V Power Supply Enclosure
Use the MEC0252V1-000U-A99 to remove heat from a 24 V industrial or telecom power-supply enclosure when the design uses a square 120 mm opening. The fan’s 108.2 CFM rating supports forced-air cooling for moderate heat loads, while the 24 VDC supply aligns with many rectifier and distribution systems. Confirm airflow direction, mounting orientation, and the fan’s electrical ratings in the Sunon documentation. The listed auto-restart behavior is useful for recovery after temporary blockage, but it does not replace a thermal-fail-safe design.
Recommended
Telecom and Network Equipment Cabinet
The MEC0252V1-000U-A99 is suitable for 24 V telecom or network equipment that uses a 120 mm panel fan for continuous airflow. Its square frame supports standardized mechanical layouts, and the nominal 108.2 CFM rating can remove heat from switching, power-supply, and processor sections. The two-wire version is appropriate for installations where power-only fan wiring is acceptable. For systems requiring remote health monitoring, select a fan variant with tachometer output and verify its stall-detection thresholds.
Recommended
Test and Measurement Instrument Housing
The MEC0252V1-000U-A99 can provide airflow for rack-mounted or benchtop test equipment that dissipates heat from analog, digital, or power-conversion sections. Its 120 x 120 x 25 mm dimensions allow integration into a dedicated rear or side panel opening. Use the fan curve and enclosure temperature measurements to establish the required CFM rather than assuming the free-air rating applies. The two-wire arrangement keeps the fan interface simple, while 24 VDC operation supports common laboratory and embedded supply architectures.
Recommended
Embedded Electronics and Robotics Enclosure
The MEC0252V1-000U-A99 is appropriate for embedded systems and robotic equipment that use a 24 VDC bus and need predictable panel ventilation. The fan can cool a controller, motor driver, communications module, or auxiliary power stage when placed at an appropriate intake or exhaust opening. Its Vapo-Bearing construction and auto-restart listing support continuous-duty cooling use cases. Design the enclosure so the fan draws from a cooler external air path and confirm that EMI, ingress protection, and acoustic requirements are met.
Recommended
LED Driver and Lighting Power Electronics
The MEC0252V1-000U-A99 can cool a 24 V LED-driver or lighting-control enclosure when the power stage is mounted near a ventilated panel. The 108.2 CFM airflow specification provides a reference for initial thermal sizing, and the 0.28 inches H2O pressure rating helps assess compatibility with protective grilles. Ensure the fan does not obstruct optical, electrical-safety, or environmental-protection requirements. If the LED system requires dimming stability, minimize fan-induced vibration and verify temperature rise under the worst-case load.
Recommended
Recommended Products Summary
Engineering reference data for MEC0252V1-000U-A99 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MEC0252V1-000U-G99 | MEC0252V1-000U-A99-TW | MEC0252V1-0000-A99 | MEC0252V1-000C-F99 |
|---|---|---|---|---|---|
| Package | 120 mm x 120 mm x 25 mm square axial fan | 120 mm x 120 mm x 25 mm axial fan | 120 mm x 120 mm x 25 mm axial fan | 120 mm x 120 mm x 25 mm axial fan | 120 mm x 120 mm x 25 mm axial fan |
| Brand | Sunon | Sunon | Sunon | Sunon | Sunon |
Key Differentiators
- Verified compact 120 mm cooling format with 108.2 CFM airflow (vs MEC0252V1-000U-G99)
- Two-wire power-only connection (vs MEC0252V1-000U-G99)
- Vapo-Bearing construction with auto-restart listing (vs MEC0252V1-000U-G99)
- Established distributor sourcing visibility (vs Generic 120 mm 24 V fan)
Design Notes
Start thermal design with the verified 108.2 CFM free-air figure only as a reference point. The actual delivered airflow falls when the fan pushes air through a grille, filter, wiring obstruction, or heat sink. Measure the enclosure pressure drop and compare it with the 0.28 inches H2O rating; if the system resistance is high, a larger fan or lower-restriction inlet may be required.
This component is an electromechanical fan, not a PCB IC, so pinout mapping is not applicable. Confirm the two-wire termination, lead length, strain relief, and connector method from the Sunon documentation before wiring. Keep fan leads away from high-temperature power stages and provide mechanical strain relief so vibration or cable movement cannot damage the leads or create an electrical fault.
Do not assume that any 120 mm, 24 VDC fan is a drop-in replacement. The mounting-hole pattern, housing depth, airflow direction, current draw, bearing type, and wire count must all match or be intentionally redesigned. The two-wire A99 configuration is not interchangeable with a three-wire tachometer-equipped fan unless the controller and connector requirements are also changed.
Fan wiring can introduce conducted noise and motor-related electromagnetic interference into nearby control or communication circuits. Route the two-wire supply away from sensitive signal paths, use suitable filtering at the 24 V input when required, and verify grounding according to the enclosure and power-system design. Test the complete assembly because changing cable routing can alter EMI performance.
Design the 24 V supply for the fan’s actual current draw, startup surge, cable resistance, and supply tolerance. The supplied verified data does not include rated current or power consumption, so obtain those values from the manufacturer datasheet rather than estimating from airflow or frame size. Include protection against reverse polarity and supply transients if the wiring may be field-serviceable.
Compliance Information
The supplied verified web data contains distributor product and datasheet links but does not state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification status. Confirm compliance and environmental documentation with Sunon or the authorized distributor before procurement.