Hello,
I have a couple of caps (pictures below) from a ca. 1992 Toshiba MK2124 hard disk drive (HDD). I think the drive has failed due to electrolyte drying / leaking on these caps (occasionally get a pungent smell from them when the drive was trying to power up).
I measured the ESR with an HP 4263B LCR meter at 100 Hz, shows Rs = ~ 2.6 kOhm (and actually was about that for any frequency). The reported series capacitance, on the other hand, falls with increasing frequency (perhaps that's expected with the way the LCR meter is measuring), starts at about 8 uF @ 100 Hz and ends up about 1.4 nF @ 100 kHz.
1. I'm not really sure what the value of these caps are supposed to be, on the side is printed 100 with 6.3 V below (I guess 6.3 volt rating for a 5 V supply rail); you can see that in the first image below. On the end is stamped 27 with M3 below that, which is a bit hard to see, but in the 2nd image.
2. I can't identify the type of package for these caps. They appear to be radial cans inserted into a black plastic rectangular cover. They are surface mount (the long leads you see in the pictures were soldered on so I could insert in the LCR meter). As they were on the board, they lie on their side, the two L shaped pins tucked under one end, and were soldered on 2 pads. In the 3rd image, you can see I was able to pull the can out of the plastic case / cover, and there is no markings on the side of the can.
Any help, ideas, or suggestions is greatly appreciated.
Thanks in advance.
Side markings.
End markings.
Separated.