Looking for a ferrite bead or choke to cover the following rise times of 100 to 300 nano secs with a frequency range of 250 Khz to 5 to 10 Mhz. I was told by someone within my organization I could use a ZJ46113TC but am not sure if this one is good for what I am trying to suppress. I cannot find any data that lets me know what frequencies it can suppress or how to select the correct one. Any help in trying to configure a bead would be beneficial and if the ZJ46113TC will do the job
Hello cclindemuth,
Welcome to the DigiKey TechForum.
I do not have any application specific information for your design question.
Hopefully one of the Engineers that monitor the TechForum, can add some recommendations on what products may help in your application.
Thank you. I would like to know if the cat # ZJ46113TC will work for my application. Is there someone or somewhere i should be sending this request to?
It may be helpful to re-state the intended objective; it is unclear what the intended meaning of “cover” a rise time is, nor the relation to the stated frequency range, precisely what is desired to be suppressed among it, and the context in which it all occurs.
That said, the part number in question would appear to be a toroidal core targeted toward construction of devices for power conversion applications. This is not exactly the sort of thing that comes to mind when one speaks of a “bead” due to the form factor. Further, one may often desire a lossy core material in suppression applications so as to make unwanted signal energy go away as heat, whereas in conversion one usually prefers to minimize losses.
I’d suggest Wurth’s Trilogy of Magnetics as a worthwhile resource on topics of magnetic components, materials, and their specification.
I am looking to suppress common mode current noise on a 5 volt encoder that is connected with a Variable frequency drive. Our Drive switching frequency is 100 to 300 Nano seconds and the frequency of the common mode current is from 250 khz to 5 to 10 Mhz.
The datasheet indicates that the core in question is made of a type J material, which exhibits a significant shift in properties over a frequency range overlapping the one of interest. If you want something that looks like a fixed-value common-mode inductance from 250K to 10MHz, it’s probably not the best option. But a person might not want a “good” inductance if, for example, the equivalent noise circuit already looks like a series RLC. There’s an overview of that manufacturer’s material selections here if that’s of interest, and most suppliers of similar components have a similar resource available for their respective offerings.
Coming from a different angle, if what a person really cares about is net impedance magnitude |Z| as a function of frequency, products grouped among the cable ferrites are more typically characterized in those terms.