We offer wirewound inductors with alumina, ceramic, ferrite, ceramic + ferrite, iron, iron powder, metal, metal-composition, non-magnetic, and phenolic cores.
In terms of current ratings, wirewound inductors are superior to multilayer inductors of the same size and inductance value. And wirewound inductors have much higher Q values than multilayer inductors of the same size and inductance.
Higher current capacity and lower DCR can be achieved by using a ferrite core inductor with a lower turn count. However, ferrite may introduce new limitations such as larger variation of inductance with temperature, looser tolerances, lower Q, and reduced saturation current ratings. Ferrite inductors with open magnetic structures will not saturate, even at full rated current.
Here are some examples of our manufacturers’ wirewound inductor ranges:
Coilcraft’s 0201DS Series inductors are the world's smallest EIA size wirewound inductors, yet they have high Q values - up to 64 at 1.7 GHz. They also feature self-resonant frequencies (SRF) as high as 24 GHz. Excellent for narrowband isolation and filtering in mobile applications.
Johanson Technology’s high frequency 0402, 0603, and 0805 High-Q chip inductors feature a monolithic body made of low loss ceramic wound with wire to achieve optimal high frequency performance.
These RF chip inductors are compact in size and are provided on tape and reel packaging which makes them ideal for high volume RF applications. They feature a nickel barrier with a top plating of gold for the ceramic core types (all 0402, all 0603, and most 0805 types), and with a top plating of 100% tin for the ferrite core types (0805 size, 470 nH and higher).
