DC Cooling Fan 30mm

For a compact cooling repair in a 3D printer or small computer component, size and electrical fit matter as much as airflow.

This two-pack of 30mm DC brushless fans is designed for replacement jobs where a small fan is needed.

Each uses dual ball bearings and a 2-pin connection. Check your device’s requirements before treating it as a drop-in replacement.

Technical details

Each fan measures 30mm x 30mm x 10mm and runs on 12V. The listed speed is 10,000 RPM, with 0.1A current draw and 3.88 CFM airflow. The stated noise level is 30 dB-A, and the wire is 8in (20cm) long.

The fans use a brushless motor and dual ball bearings. The listed expected service life is 70,000 hours at 40C, treat that as a stated figure, not a promise of how long a fan will last in every device. The housing and impeller are black plastic described as UL94V-0 certified, and the fans are UL certified.

What it works with

The stated uses include 3D printers, computers, graphics cards, and other small appliances as a repair or replacement fan. That makes this pack relevant when a compact device has a failed fan and you need a small 12V unit. It does not establish compatibility with every model in those categories.

Before ordering, compare the old fan’s dimensions, voltage, connector, and wiring with the replacement. The 2-pin plug is especially important: a physically similar fan may still not connect to your device. The listing does not provide a pinout or device-specific compatibility list.

Usage tips

A practical example: if a small fan in a 3D printer stops turning, measure the existing unit and check its label and connector before opening the device for replacement. Match the 30mm x 30mm x 10mm size and 12V requirement, then make sure the 2-pin lead can connect as intended. The 8in (20cm) wire length is another detail to compare if the fan sits away from its connector.

From the way it is set up, this is a replacement component rather than a complete cooling assembly. Confirm that the listed airflow suits the device’s cooling needs, the specs alone cannot tell you how much cooling a particular enclosure or component requires. It also has no listed speed-control feature, so don’t assume one is included.

Questions before you buy

How many fans come in the pack? Two fans are included.

Is this a 12V fan? Yes. The stated operating voltage is 12V, with a listed current draw of 0.1A.

What is the connection type? The listing specifies a 2-pin connection. It does not give a pinout, so compare the connector and wiring with your existing fan.

When it makes sense

It suits you if you need two compact fans for a repair and your device calls for a 30mm, 12V unit with a 2-pin connection. The dual ball bearings and stated airflow make it a more specific replacement choice than buying a fan based only on size.

You may want to skip it if your device uses a different voltage, connector, or fan size, or if you need confirmed compatibility with a particular model. The key decision is not simply whether the fan is small enough, its electrical and connection details need to match the original part.