Leakage current of high voltage electrolytic capacitors?

[grizedale]

Hello,

Do surface mount 250V electrolytic capacitors tend to draw more leakage current than radial package electrolytics of the same capacitance?

 

[godfreyl]

Leakage current should be specified in the datasheets.

 

[grizedale]

yes, and in all cases i look at (eg below) , the surface mount cap has far more leakage current than the radial type......why is this?


RADIAL elec'ic cap:
http://www.icd-sales.com/Manufacturers/Jamicon/Capacitors/spec-sheets/SV Series ICD.pdf

SMT elec'ic cap:
http://www.niccomp.com/catalog/nacv.pdf

 

[godfreyl]

yes, and in all cases i look at (eg below) , the surface mount cap has far more leakage current than the radial type......why is this?

Isn't that just because you're comparing a low voltage through-hole cap with a high voltage SMT cap, or have you compared caps with similar ratings and found the same?

The pic below (from **broken link removed**) suggests that high leakage goes together with high voltage.

 

[grizedale]

I really am very sorry i meant this datasheet for the radial one.and its 3 times less leakage current compared to equivalent type in SMT.

**broken link removed**

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