Description
The NMB-MAT 3112KL-05W-B69 is a high-performance 80x80x32 mm DC axial cooling fan designed for high-density thermal dissipation across demanding industrial electronics. Featuring original engineering by MinebeaMitsumi, this component incorporates a robust dual precision ball-bearing assembly and high-efficiency aerodynamic impeller design, delivering optimal airflow and sustained static pressure in high-impedance thermal architectures.
MODEL NUMBER BREAKDOWN
Series: 3112KL (80 mm x 80 mm x 32 mm casing)
Voltage Rating: 05 (24 V DC nominal)
Termination Type: W (Lead wire)
Bearing Type: B (Dual precision ball bearings)
Speed Class: 6 (Ultra-high speed grade)
Signal Output: 9 (3-wire configuration with integrated tachometer/frequency generator sensor)
TECHNICAL SPECIFICATIONS
Manufacturer: MinebeaMitsumi (NMB-MAT)
Part Number: 3112KL-05W-B69
Frame Dimensions: 80 mm x 80 mm x 32 mm
Rated Voltage: 24 V DC
Operating Voltage Range: 18.0 V DC to 27.6 V DC
Rated Current: 0.28 A
Input Power: 6.72 W
Rotational Speed: 4000 RPM (±10%)
Max Airflow: 1.84 m³/min (65.0 CFM)
Max Static Pressure: 92.0 Pa (0.37 in H2O)
Acoustic Noise Level: 44.0 dBA
Bearing System: Dual Precision Ball Bearings
Termination: 3-Wire Leads (+24V Red, GND Black, Tachometer/FG Output White/Yellow)
Direction of Rotation: Counter-clockwise viewed from front of impeller
Airflow Direction: Ingress over strut frame, exhaust over impeller
Frame Material: Reinforced PBT Plastic (UL94V-0 compliant)
Impeller Material: Reinforced PBT Plastic (UL94V-0 compliant)
Operating Temperature Range: -10 °C to +70 °C
Storage Temperature Range: -40 °C to +75 °C
Insulation Resistance: 10 MΩ minimum at 500 V DC
Dielectric Strength: 700 V AC for 1 minute
Life Expectancy (L10): 70,000 Hours at 40 °C
Weight: 140 g
Certifications: UL, CSA, VDE, CE, RoHS compliant
INDUSTRIAL APPLICATIONS & COMPATIBILITY
This cooling unit is engineered specifically for enclosed power electronics requiring non-stop thermal management under continuous duty cycles. Key applications include:
– Variable Frequency Drives (VFDs) and Inverter Power Modules
– Industrial Automation Enclosures and PLC Server Racks
– Switchgear, Motor Drive Cabinets, and CNC Controller Units
– Telecom Power Distribution Systems and UPS Units
TECHNICAL COMPATIBILITY & LIFECYCLE VALUE
The integrated third-wire tachometer output enables real-time RPM feedback directly into host controller diagnostic boards, preventing sudden thermal runaway and catastrophic power stage failure. The combination of high static pressure and dual ball bearing construction ensures long-term operational reliability within harsh factory environments subject to vibration, dust, and continuous thermal cycling. Standardized mounting hole patterns (Ø 4.3 mm standard flange) guarantee drop-in technical compatibility for legacy and new system integrations.
COMMERCIAL & SUPPLY TERMS
Condition: 100% Brand New and Original Engineering Factory Stock
Lead Time: Immediate dispatch available for standard lot sizes; scheduled blanket orders supported for volume manufacturing requirements
Packaging: Industrial bulk trays, moisture-barrier ESD compliant packaging
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