Talk:Tantalum capacitor

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Untitled[edit]

"Their effective series resistance (ESR) is quite high when compared to aluminium electrolytics" I believe this is incorrect, does anyone have a recent source relating to this? Bobosoft (talk) 02:24, 1 October 2009 (UTC)

Here are some datasheets: I picked relatively standard 100uF caps of each type, for the same 6.3V rating:

  http://uk.farnell.com/rubycon/6-3zlg100mefc6-3x7/capacitor-100uf-6-3v/dp/1278842
  http://uk.farnell.com/kemet/t350h107k006at/capacitor-case-h-100uf-6-3v/dp/1457594

It seems to be the case that the tants can get more capacitance in a given volume. But for a given capacitance, the electrolytic is usually 10x better (lower) on ESR than the tantalum. — Preceding unsigned comment added by 87.194.171.29 (talk) 20:27, 30 July 2012 (UTC)

This page says "All tantalum capacitors are polarized devices", but Types_of_capacitor says "Available in both polarized and unpolarized varieties". Which is right? CLandau (talk) 17:18, 11 October 2010 (UTC)

There are unpolarized Ta capacitors. Amended this article. Materialscientist (talk) 23:53, 11 October 2010 (UTC)

Tantalums are NOT the most expensive capacitors. If the comparison is made in terms of cost per CV (energy capacity), then glass capacitors are far more expensive, and if the comparison is per unit, EDLC and film types come in much higher priced packages than the largest tantalums. (Disregarding "boutique" capacitors.) — Preceding unsigned comment added by 173.48.205.101 (talk) 00:53, 7 January 2014 (UTC)

What is the significance of the TAG and TAP designations[edit]

As above - can't find any description anywhere (even google !) of the significance of these type designations for tantalum capacitors.

210.54.213.151 (talk) 22:55, 26 January 2014 (UTC) Geoff Wood geoff@geoffwood.org

voltage ratings[edit]

Given how easy it is to explode a tantalum cap, it would be useful to have a guide here as to the acceptable voltages.

Eg if I have a 5V power supply, can I use a 6.3V capacitor, and be confident that any spike below 12V will not harm it? Or is this flirting with disaster? — Preceding unsigned comment added by 87.194.171.29 (talk) 13:48, 7 March 2014 (UTC)

This is not only flirting. An older rule of thumb says 50 % voltage derating for the highest voltage you expects and dont forget the protection resistance 3 Ohm per Volt in series to the capacitor. Maybe the remaining ripple voltage is too high - take an aluminum electrolytic capacitor 6.3 V. No resistance required --Elcap (talk) 15:16, 7 March 2014 (UTC)

Not a textbook[edit]

Way too much redundant detail - we have an article on "electrolytic capacitors", do we need to redevelop all the physics here as well? This isn't a textbook on capacitor manufacture. --Wtshymanski (talk) 00:09, 18 November 2017 (UTC)