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Old 14th January 2006, 06:54 PM   #1
ed8150 is offline ed8150  Abu Dhabi
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Default Question about snap in capacitors

I recently purchased 6 10000uf 100vdc caps off of ebay. If you are looking at it from the bottom, it looks somewhat like the attached diagram. The red are pins that stick out and away from the bottom, which are part of the black that attach to the capacitor itself. the black circle represents the casing. Iam curious as to why there are 4 pins, as all the capacitors i have seen up to this moment have been 2 leaded. Are they for mouting only? If so, how do i tell which are the active ones?
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Old 14th January 2006, 06:58 PM   #2
poobah is offline poobah  United States
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The pins are made in this way to prevent the caps from being inserted into a circuit board backwards. Backwards insertion will cause the caps to explode.

Look up the manufacturers "data sheet" and it will show you the proper connections.

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Old 14th January 2006, 08:43 PM   #3
ed8150 is offline ed8150  Abu Dhabi
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are there mounting sockets for these things to mount on a pcb/chassis? also i was having some trouble locating the manufacturers sheet. I believe they are made by nippon chemi-con and have the following marking on them:
82da
10000uf uv
100vdc
9528l 42
+85 degrees c

i believe they are alum electrolytic, but iam not sure. Can anyone help me in finding the data sheet?
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Old 14th January 2006, 09:08 PM   #4
poobah is offline poobah  United States
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I cannot find the data sheet. No, they do not use sockets. You can use your DVM to figure the pins.

1. The negative should be easy... it is labeled

2. Measure from negative to other pins, if they read 0.00 Ohms, they are negative also. If not they are positive. The 82 DA is not so old... CHEMI-con website is joke!

EDIT:

I found their mounting guide... enjoy. Some terminals are "dummies".
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