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Registered Member #162
Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3140
From the part # beginning with PF I also guess these are photoflash, a matrix of these capacitors would be excellent if the interconnections are done well. Several manufacturers of high power motor inverters use arrays of smaller snap-in normal inverter grade capacitors rather than a few large screw/can style. These would be even better. This arrangement seems at least as reliable as large cans. Industrially a large double-sided copper-clad pcb is used (seems like 2oz./sq.in. (70um) copper is common) with as much copper area as possible used. If you are not expecting a lot of vibration then 105C low-impedance wire-end radial electrolytics are even better; impedance, ripple-current, volume and cost wise.
Since these are (possibly) photoflash grade they would make an excellent capacitor bank for projectile launchers, better than a large-can screw-terminal bank of similar capacity.
The only question I have is, what are you going to do with pulse-rated 12 kJ capacitor bank? (I hope you have good ear & eye defences)
If you do make such a cap bank, build in explosion containment and for rapid repeated charge/discharge cycles, a cooling fan.
Update: I've gone ahead and ordered 25 of these caps to populate a moderate size bank. I'm going to hold off on PCB design until I can take a micrometer to them, as I haven't found a good dimensional match in the CDE datasheets.
Update2: They've arrived, well packaged and quickly, but my micrometer is either dead or needs batteries. Ce la vie. Fastest way to replace it is probably harbor freight...
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Leaded snap-in capacitors
