Sorting through a grab bag of capacitors, reading labels and also checking with multimeter. Ran across a handful of the following marked thus: "Sprague, 30D+, TE1129, 15-12DC, USA +, 8124H"
Small metalic cylinders measuring approximately 1/4" round and 1/2" long.
Possibly inductors, but 8124 Henries seems rather large.
Thank you for replies.
Ivan Vegvary
Vishay makes the Sprague stuff now, the 30D is a current component and you can get the datasheet.
BTW, forgot to mention. Said components do not budge the digits on my multimeter. Ivanveg Vegvary
Based on what Win said, an aluminum electrolytic, probably 15uF/12VDC
available and meets your description.
--sp
If you get the Vishay datasheet I mentioned, you'll see it's an electrolytic cap.
My first thought was a hermetic cylindrical tantalum.
The marking style and value seems to hint at that.
The old Sprague capacitors had transparent shrink shrink wrap on them (and apparently the Vishay-Sprague ones still do).
If the OP had bothered to link a photo it would have been a lot more "clear".
--sp
TE1129 is a Vishay part number.
Cheers
Thanks all. My problem was that I wasn't patient enough with my multimeter. It takes 2-3 seconds for a reading. Thanks!
Not a very impressive part, 15uF 12V axial.
Here's something that impresses me. There's a very old school Sprague
39D 2300UF-50VDC in my parts drawer that was manufactured in the USA and measures 25mm in diameter and 92.5mm in length. OTOH a new Rubycon 2300 uF 50 VDC manufactured in Japan measures 18mm in diameter and 35.5mm in length.The Rubycon uses a formula at the heart of the capacitor plague. [1] IIRC, Vishay manufactures some, if not all, of its Sprague electrolytic capacitors at its Taiwan plants. Caveat emptor - Taiwan is ground zero of the plague.
Note.
Thank you,
8124 sounds like the production date. 1981, 24th week. At least, that was the system Sprague used during that era.
Mine is better than yours! :^)
I have some like that, clear shrink wrap, vintage Sprague and whatnot... various values.
Then I have some M39003? tantalums... hermetic glass seal, quite large for their values, not to mention heavy...
Those are mil-spec tantalum, but they're dry slug (the kind with MnO2 electrolyte -- though these are probably too dense to catch fire, honestly). That means they're only somewhat expensive...
...Win has some of the wet slug ones, doesn't he? :-)
(I also have some classic mil-spec PIO caps. Hmm, the audiophools drool over those, don't they? I should see what they fetch on eBay... :)
Tim
They are electrolytic capacitors, very common (here in the states in the "old" daze '70s to '90s roughly. The 8124 is likely the date lot code, 1981 week 24.
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