17 Mar
2013
17 Mar
'13
11:07 a.m.
On 03/17/2013 10:04 AM, Dave McGuire wrote:
A year or so ago, when I was working on a new
design for work, Dan
Roganti noticed that I had designed in some tantalum capacitors in a
switching regulator. He razzed me pretty good about it, and talked me
into investigating some of the newer low-ESR high-capacitance-per-volume
capacitor technologies. I've since been using some really fantastic
aluminum organic polymer capacitors. They're cheaper than the tantalums
(tantala?), they do not contain a liquid electrolyte (which means they
cannot boil and burst, hence no "K" scoring on the top) and their ESR is
almost unbelievably low.
Yes, great stuff making its appearance in a lot of new gear. However,
the range of values seems to be quite limited for through-hole (radial
wire leads) devices in comparison to what's available in SMT.
I suppose that's only to be expected.
--Chuck