To put it simply, some manufacturers don't list their inductors' self resonance frequency.
I'm a bit baffled as to why they don't do this, and I have some concerns using inductors like this one on high frequency switching applications such as DC to DC converters, as they typically use frequencies in the order of hundreds of kHz, some even a few Mhz.
The only spec they list for that particular inductor is "Frequency - Test" of 1kHz. What does this mean? Will there be any problems if I use this inductor on a DC to DC converter switching at a frequency of, let's say, 100kHz?
I suspect the reason for this omission is the type of inductor, toroidal in this case. Do toroidal inductors have such a low parasitic capacitance that its effect is not noticeable even at very high frequencies, and manufacturers don't even bother to list it? Or is it the opposite, and manufacturers are expecting designers to only use them at very low frequencies?
And whatever the case may be, how does the parasitic capacitance of toroidal inductors compare to other types of inductors?
Also, maybe I shouldn't be using these type of inductors for stuff like SMPSs? If so, what kind of inductors should I be using? What if I need high power, and thus high current handling capabilities?
Any help would be immensely appreciated.