Oznog
Active Member
Well, I have a project with a moderately high current driver with pretty tight space concerns and the SMD tantalum I put in there isn't doing well. Getting quite hot.
I'm considering just going with one of the high capacitance ceramic, even that tant was pressing the available space pretty hard. Now in the past I've worked on the assumption that the ESR is "too low for it to matter" but I'm not familiar with these tiny high cap ones. Like I'm looking at the C2012Y5V1A106Z 10uF 10V Y5V in an 0805 pkg. However its spec sheet gets no more specific than "Owing to their low ESR and excellent frequency characteristics, these products are optimally suited for high frequency and highdensity type power supplies." This is often the case.
What should I reasonably expect for ESR here? Looks like 0.1 ohm might be an absolute max. 0.01 ohm would be "so low we don't care anymore".
I'm considering just going with one of the high capacitance ceramic, even that tant was pressing the available space pretty hard. Now in the past I've worked on the assumption that the ESR is "too low for it to matter" but I'm not familiar with these tiny high cap ones. Like I'm looking at the C2012Y5V1A106Z 10uF 10V Y5V in an 0805 pkg. However its spec sheet gets no more specific than "Owing to their low ESR and excellent frequency characteristics, these products are optimally suited for high frequency and highdensity type power supplies." This is often the case.
What should I reasonably expect for ESR here? Looks like 0.1 ohm might be an absolute max. 0.01 ohm would be "so low we don't care anymore".