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Re: Nice PC board for MMC capacitors

Original poster: "Gerald  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>

Hi Harold,

Just wanted to mention that MPAQ Electronics sell the CDE 942C20P15K 0.15uf caps for $2.30 ea (28 caps to a bag) and they have a much higher peak current rating:

Ipeak = 432 amps
Irms   = 13.5 amps
dV/dt = 2879 volts per microsecond
ESL   = 32 nh
ESR   = 5 milli ohms
Dia     = 1.161 inch
Len    = 1.811 inch  (body only - not counting lead bending)
lead_dia  = 0.047 inch

Gerry R.

Original poster: "Harold Weiss" <hweiss@xxxxxxxxxx>

Did you get any of the STK caps?  I was wondering if you did any destructo
tests on them.  Being a little smaller in diameter, and about the same
length and value, they would be great for a nice compact board.  As I'm
getting ready to build the MMC for a 4" 12/60 coil, I'd be very interested
in a PC board version.  I'm surprized Dan didn't beat you to it.

David E Weiss

> Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>
> Hi All,
> I was thinking of getting a nice PC board made for holding MMC caps. It
> would hold up to two strings of 12 (24 total) Geek style 0.15uF 2000V > caps
> (12 of the caps could be mounted in parallel on the back too):
> http://hot-streamer.com/temp/MMC-CapBoard.gif
> There would be screw terminals to tap from 6 (12) to 12 (24) caps. It
> would be a screened and solder masked board and all that. It should > take
> all the standard NST configurations. If anyone has any ideas to make > the
> layout better, I am all ears too ;-)
> http://hot-streamer.com/temp/MMCcapSales.gif
> If I just buy "two" of these big 9 inch by 9 inch boards for "me", the
> is $140 each!! However, if I get 20, the cost is $35 each. "I" don't
> 20, but I was thinking maybe others would like to buy the extras ;-)
> So I would just like to ask if people would be interested in this? I
> the cost with shipping would be $40 (just my cost really). If you think
> you would be interested, just drop me a quick note at:
> teslalist@xxxxxxxxxxxxxxxxxxxxxxx
> Not taking orders or anything, I just want to be sure there are more > than
> say two people interested so I don't get stuck with $650 worth of extra
> boards. Unlike a group buy, I would just get them and sell them off > till
> gone. So let me know if this sound cool. If I get enough response that > it
> sounds like I would be able to get ride of the extras, I will probably > get
> them on order. If there is a giant interest, maybe someone could sell
> for a little profit to supply us ;-) Seems like the batches of 20 > boards
> at $70 is about right. I would be happy just to sell the extras to some
> entrepreneur too that could sell them at a little profit.
> HAHAHA... and I would probably like have to buy some some of my own
> back some day too!! Been there, done that :o)))
> Cheers,
> Terry