Frequently Asked Questions

What is the tolerance marking on the surface mount parts?
The tolerance marking on the parts is determined by the size of the part. Usually, the 1210 package size and smaller are not marked with a tolerance marking. The 1812 package size and larger usually are marked with the letter code for the specific tolerance, i.e. "J" for 5%, "K" for 10% and "M" for 20%.
 
How can I remove the noise from a long audio line?
You should be able to remove the noise from the wire by using ferrite shielded beads. The impedance will be different depending on the size and material used. Be sure to select the right size part, noise frequency and impedance for your specific application.
 
What does DCR stand for and what does it mean?
DCR stands for "Direct Current Resistance" and is referring to the resistance of the wire.
 
How can I get an inductor with high Q?
Normally, inductors without cores can produce a higher Q. If the inductor does not have a core, it is very difficult to produce a higher inductance. An example would be, if your application called for an inductor in the Nano Henry (nH) range you could use an air core inductor to achieve the higher Q.
 
What is the color-coding standard on CTDO series?
The color-coding on CTDO series shows the inductance in Nano Henry's (nH). For example, if the part is 3.3 µH, it's equal is 3300nH. The color code would read "Orange", "Orange", and "Red" which equals 332. (Please refer to the color code chart at the back of the catalog.)
 
What kind of core do you use for CT1008CS wire-wound series?
CT1008CS series is open wire-wound inductor. The part is made with a ceramic core so that it can withstand the higher frequency applications.
 
What is the rated current?
There are two types of rated current on inductor. The first is the saturation current, which allows the inductance to drop around 10% from its original value. Second, is the current that increases the ambient temperature to around 40° higher.