Cooling Fan Manufacturer parameter

Multiplayer is because there is no right to read "Cooling Fan Manufacturer" parameters, resulting in a lot of parameters to meet the demand as caused by overheating. Heat issues unresolved. Here we teach the DC fan selection parameters.
1. Yes "Cooling Fan Manufacturer" size. DC fan size is considerably more. Generally based on mm units, usually the length and width 25MM to 120MM. There is a big point of the circle, is 172MM diameter.
2. is "Cooling Fan Manufacturer" thickness. In addition to the standard cooling fan size, the same thickness dimension is different. Under the same size, the same rotation speed, the thicker, the air flow will be greater, usually the thickness 7MM to 38MM, the thickness of the corresponding circle is 51MM.
3. is "Cooling Fan Manufacturer" voltage. Refers to the exponential voltage DC fan in stable operation, generally used for the host computer or power supply voltage is 12V, the electronic world are mostly fans of 12V. DC fan voltage 5V, 12V, 24V, 36V, 48V, I basically have these voltage specifications fan.