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Old 02 May 2017, 16:41   #1
wiz12
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Capacitors

I have to replace a few capacitors on a number of components and I'm trying to figure out what voltages the following smd electrolytic capacitors are. I know they are 10µF, 16µF, 22µF, 47µF and 100µF, it's just the voltages I cannot figure out?


10 25A 3DB
10 35S 3DA
10 35A 33B
22 16A 49B
47 16S 3DA
47 16A 3DC
47 16S 33B
100 6S 37B
100 6S 38B
16A 49B
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Old 02 May 2017, 16:54   #2
ajk
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The markings depend a bit on the manufacturer, but looking at those values, you can quite safely assume that the voltages are the second part (25V, 35V, 16V and 6V).

Is that last one actually different or is the first marking just missing from this list?
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Old 02 May 2017, 17:37   #3
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I was thinking that might be the case with the voltages but was unsure. The last one is six digits only. What do the last three digits mean on the regular capacitors?
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Old 02 May 2017, 17:48   #4
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I don't know if there is a standard, as far as I know it's usually some manufacturer dependent series or lot code. What those particular ones mean, I couldn't say. Perhaps someone else recognizes them.
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Old 02 May 2017, 17:52   #5
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Actually you're right about the last capacitor. It should be 22 16A 49b. Which I assume is a 22uf 16 volt capacitor.
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Old 02 May 2017, 18:00   #6
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There are various lists of capacitors around for the different Amiga models that might help you out, for example here and here. Also, the schematics might be of help too (clicky).
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Old 02 May 2017, 19:13   #7
wiz12
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Quote:
Originally Posted by Daedalus View Post
There are various lists of capacitors around for the different Amiga models that might help you out, for example here and here. Also, the schematics might be of help too (clicky).
Thanks, will have a look at them.
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Old 02 May 2017, 23:28   #8
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Just one other question, a tantalum capacitor with markings 107 16K 748, what's the capacitance and voltage?
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Old 03 May 2017, 01:02   #9
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I would be reasonably certain that's 100uF (10 + 7 zeroes pF), and 16V, but couldn't absolutely guarantee it.
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Old 03 May 2017, 12:57   #10
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For caps I usually post my "recap-rant" post:

http://wordpress.hertell.nu/?p=464


it got a list of good caps in the end.
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Old 11 June 2017, 22:10   #11
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For caps I usually post my "recap-rant" post:

http://wordpress.hertell.nu/?p=464


it got a list of good caps in the end.

I looked at your list of A1200 caps & they are Organic Polymer Caps?
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Old 11 June 2017, 22:25   #12
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Yes
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