Material: basically ferrite, of course this ferrite also has the distinction, there are generally mxo-manganese zinc class and nxo-nickel zinc class. The main advantages of nickel and zinc are: the initial magnetic permeability is low (less than 1000u), but it can work at a relatively high frequency (greater than 100MHZ), keeping the magnetic permeability constant. Strong and great.
The resistance of NXO is higher than that of MXO. The similar damping effect of ferrite on high frequency clutter is used to release high frequency clutter in the form of heat energy, which explains the temperature problem of common mode inductors.
Most importantly, the cost is low (someone USES RMB 0.9), and it can be wound by a machine with high efficiency, usually UU9.8 or UU10.5.
With the skeleton, the winding process should be better controlled and higher inductance can be made.
Good pressure and reliability? For the common mode of magnetic ring;
Good plug-in, good installation. Four feet, the hole is correct, there is no problem; It is mainly used for small current power supply, because the wire diameter cannot be very thick, so the current cannot be too large.
Space factor: the packaging position is large, maybe because it is stronger, not as small and exquisite as the magnetic ring.
The fever is serious, which is also based on my measurement :90V input full load at room temperature, can reach 90 degrees faster;
It is generally used in the case of strict cost control or low power.