Technical Specifications

Key Features

Applications

• Miniature embedded electronic equipment ventilation
• Compact low-voltage circuit cooling assemblies
• Portable electronic equipment with limited internal clearance
• Small electronic instrumentation thermal management
• Miniature controller and computing module ventilation
• Compact electronic enclosures requiring a 3 mm thick fan
• Equipment maintenance requiring compatible 5 VDC miniature cooling fans
• Replacement of a matching UB5U3-724 cooling fan with verified wiring and dimensions

Purchase Information

We support online purchase of the UB5U3-724 miniature cooling 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. Please specify whether you require a SUNON-labeled version, two-wire or three-wire connection, and the exact cable or connector configuration to help identify the correct item.

Frequently Asked Questions

What is UB5U3-724?
UB5U3-724 is an ultra-thin miniature cooling fan commercially described as a 5 VDC, 30 x 30 x 3 mm unit. Several suppliers list a 0.08 A current rating and 15000 RPM speed. The designation appears in both SUNON-labeled and other branded listings.

Is UB5U3-724 manufactured by SUNON?
Several replacement suppliers and marketplace sellers advertise UB5U3-724 as SUNON. However, a third-party product manual attributes the same model number to NUVCOL, and a SUNON manufacturer datasheet independently confirming the model was not located. The actual brand should be established from the supplied fan and traceable manufacturer information.

What is the rated voltage of UB5U3-724?
The commonly listed rated voltage is 5 VDC. Several sellers also report a working voltage range of 3.3-5.5 VDC. These are commercial specifications and should be checked against the actual fan configuration.

What are the dimensions of UB5U3-724?
Multiple exact-model listings give nominal dimensions of 30 x 30 x 3 mm, equivalent to 3 x 3 x 0.3 cm. Exact mounting-hole dimensions, frame tolerances and cable-clearance requirements were not independently verified.

What is the rated current?
Several commercial product specifications list 0.08 A, equivalent to 80 mA. A separate original manufacturer specification establishing maximum current or startup current was not located.

What is the power consumption?
Using the commonly listed voltage of 5 VDC and current of 0.08 A, calculated input power is approximately 0.40 W. This is an engineering calculation, not a separately verified manufacturer power rating. Startup power and maximum input power remain unverified.

What is the rated fan speed?
Multiple commercial listings advertise 15000 RPM. This speed has not been independently confirmed from a SUNON manufacturer datasheet for UB5U3-724, so it should be treated as a supplier-published reference.

What are the airflow and static pressure ratings?
An exact-model airflow rating in CFM or m³/h and maximum static pressure rating were not independently located. Values from other miniature cooling fans should not be applied without confirming the individual product's performance specifications.

What bearing system does UB5U3-724 use?
Several sellers describe a hydro or fluid bearing. An independent original manufacturer document verifying the bearing construction and lifetime of the complete model was not located. Check the particular supplied version if bearing type is critical.

What is the acoustical noise level?
Supplier figures are inconsistent. One marketplace listing reports 10-15 dB(A), while another lists 28 dB(A). Without consistent manufacturer test data, neither figure can be presented as a verified acoustic specification for all UB5U3-724 configurations.

Does UB5U3-724 use two wires or three wires?
Both versions are advertised by commercial suppliers. Two-wire listings describe standard DC power connections; three-wire listings do not consistently document the additional lead's electrical function. A replacement specialist also offers a version without an attached power cable. Confirm the actual cable, connector and pinout, and do not assume the third wire is a tachometer or PWM lead without documentation.

What should be checked before ordering UB5U3-724?
Confirm the actual manufacturer, complete model number, 5 VDC supply, 0.08 A commercial current rating, nominal 30 x 30 x 3 mm dimensions, required fan speed, bearing type, mounting-hole layout, airflow direction, connector pitch, cable length and electrical wiring. Select the correct two-wire, three-wire or cable-free assembly for the equipment. As the model is advertised under more than one brand and the published wiring and noise details differ, compare the installed fan's markings and physical construction before purchasing a replacement.