CAFELE RDH1225S 12V 120mm 0.40A case fan

120 mm 12 V chassis fan

The CAFELE RDH1225S is a 120 mm square frame fan that runs on a 12 V DC supply and draws 0.40 A. It fits standard 120 mm mounting holes in PC cases and similar enclosures. Builders needing a direct replacement for a worn or noisy 120 mm unit will find the electrical match straightforward.

Practical limits of the 12 V DC interface

The fan requires a 12 V source capable of delivering at least 0.40 A; a weaker rail will not spin the motor reliably. Speed is fixed by the applied voltage, so there is no PWM or voltage regulation built into the unit. Systems that rely on motherboard fan headers for automatic speed curves must supply a constant 12 V or accept full-speed operation.

Build quality and daily implications

The frame measures 120x120x25 mm and uses a conventional four-corner screw pattern compatible with typical case mounts. All units are tested before shipment, reducing the chance of a dead-on-arrival motor. The 25 mm thickness clears most standard chassis cutouts, but very slim enclosures may not accommodate the full depth.