It's been about 1 year since the last post was made to this thread, but I came across it today while pondering a recap of my own
DiiMO 50MHz accelerator card. From what I understand those 5 silver electrolytic capacitors on the chip side of the board are
22uF 6.3V. Mouser has drop-in replacements for about $0.5 each in 5pc quantities (
Panasonic EEE-FP0J220AR). They are rated at 2000h at 105°C and have a rather low 0.85-ohm ESR. I thought about tantalum (to avoid future leakage issues), but they are expensive and could go up in flames if you don't voltage spec them at 10V or 16V. That's why I pondering
10V 22uF Niobium Oxide replacements now. Mouser has them for $0.75 each in 5pc quantities. They won't burn, have only a 20% voltage derating (versus 50% for tantalum), and a low (but not too low) ESR of 700m-ohms. The only potential caveat is the small 1210 (3528) package size, which is a mere 3.5mm long. I've not yet removed a stock cap to see how close the pads are, but if they are close enough for a 3.5mm body then these Niobium caps may be the perfect replacement solution.
By the way,
tact, I see you recapped your analog board too. The
film cap you are using for
C15 fits quite nicely.
What part number did you use? I am considering recapping my own analog boards using the 25.3mm long (
Panasonic ECW-FD2W395J) but it looks to be a tight fit.