new Jamicon JF0825S2H Server Fan DC 24V 0.15A 80*80*25mm 2Pin

Home · Cooling & Thermal · DC Axial Fans

What Is the Jamicon JF0825S2H Server Square Fan?

The Jamicon JF0825S2H is a DC axial cooling fan in the standard 80 x 80 x 25 mm form factor, widely used in server racks, network switches, telecom enclosures, and industrial power supplies. It operates on 24V DC drawing just 0.15A (3.6W), striking a strong balance between airflow performance and low power consumption. The 2-pin connector provides straightforward plug-and-play power in equipment that uses voltage-regulated speed control -- no PWM signal wire required. Jamicon (a Taiwanese manufacturer established in 1985) produces these fans with dual ball bearings for extended service life, rated for continuous 24/7 operation at temperatures up to 70 degrees Celsius ambient.

In short: A 24V DC, 0.15A server-grade cooling fan in the universal 80x80x25mm size with a simple 2-pin connector -- ideal for replacing noisy or failed fans in server chassis, industrial cabinets, and network gear. Supplied new by koeed.com.

Technical Specifications

2-pin fans run at a fixed speed determined by the supply voltage. For variable-speed applications, use an external DC voltage regulator or PWM controller to adjust the supply voltage.

Typical Applications

• Server Rack Cooling: Replacement exhaust or intake fan for 1U/2U server chassis, rack-mounted storage arrays, and blade enclosures
• Network Equipment: Cooling for Ethernet switches, routers, firewall appliances, and PoE injectors in IT closets
• Telecom Enclosures: Ventilation fan for outdoor telecom cabinets, base station equipment, and fiber optic multiplexer housings
• Industrial Power Supplies: Forced-air cooling for DIN-rail power supplies, battery chargers, and DC-DC converter modules
• Embedded Systems: Active cooling in kiosk computers, digital signage players, and test instrumentation enclosures

Frequently Asked Questions

Can I reduce the fan speed to lower noise levels?

Yes. The JF0825S2H will start reliably at approximately 12-14V DC and run at proportionally lower speed and airflow. However, ensure the reduced airflow still meets your equipment's thermal requirements. Many server power supplies monitor minimum airflow and may trigger a fault if the fan spins too slowly. Use a DC step-down converter rather than a series resistor for efficient speed control.

How long does a dual ball bearing fan last in continuous operation?

Jamicon rates dual ball bearing fans for 50,000 to 70,000 hours of continuous operation at 40 degrees C ambient (L10 life, meaning 10% failure rate at that point). This equates to roughly 6-8 years of round-the-clock runtime. The most common failure mode is bearing lubricant drying out, which produces a characteristic whining noise before complete seizure -- plan for proactive replacement at the 5-year mark in mission-critical equipment.

What happens if I accidentally reverse the polarity?

Most Jamicon fans include internal reverse-polarity protection via a diode. If wired backwards, the fan simply will not spin rather than suffering damage. Always verify the polarity marking -- typically red wire is +24V and black wire is GND. If your equipment uses non-standard wire colors, trace the connector back to the power supply rail before connecting.

Can this 24V fan replace a failed 12V fan?

No -- a 24V fan connected to a 12V supply may not start at all, and even if it does, the airflow will be far below specification. Conversely, connecting a 12V fan to a 24V supply will destroy it within seconds. Always match the fan voltage to your equipment's fan power rail. If you need a 12V replacement, contact KOEED for alternative models.

How do I confirm airflow direction before mounting?

Axial fans have two arrows molded into the side frame: one indicates blade rotation direction, the other indicates airflow direction. The side with the label/sticker hub is typically the exhaust side. For server racks, follow the front-to-back airflow convention: intake from the cold aisle, exhaust to the hot aisle. If mounting orientation matters for your enclosure, briefly power the fan and confirm direction with a tissue paper before final screw-down.

Jamicon JF0825S2H DC Axial Fan — Supplied by koeed.com. All trademarks are property of their respective owners.