Tantalum capacitor scrap - Page 14

We purchase all types of Tantalum Capacitors Scrap

Current Pricing is:

Epoxy/Ceramic Capacitors - $11/Lb
SMD/Molded Capacitors -- $11/Lb
Axial/Hermetic A Size Capacitor - $7/Lb
Axial/Hermetic B Size Capacitor - $8.00/Lb
Axial/Hermetic Capacitors C&D - $10/Lb
Tantalum RED Capacitors - $30/Lb
Wet Tantalum Capacitors - $42.50/Lb
Ag/Ta Capacitors - $55/Lb
RED Top Ag/Ta Capacitors - $20/Lb
Tantapak/Wets Capacitors - $6/Lb
Tantalum Foil -- $6/Lb
Tantalum Bullets -- $6.50/Lb

We purchase all quantities small and large



Tantalum Recycling
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Are the yellow caps in these photos tantalum? They are a different shape than I usually see the drop style and some have 3 legs instead of 2. There are 3 different types in these photos that have me scratching my head. Lots of photos but couldn't get focused well enough on some. Different angles of the same board...

Red - TantalumRecycling will need to tell you yea or nae on what is or isn't a tantalum capacitor. I do believe the three lead yellow epoxy resin dipped capacitors are indeed tantalum capacitors. They look to me to be Vishay-Sprague Solid Tantalum Capacitors, specifically 299D - Solid-Electrolyte TANTALEX®:Tripole®, triple lead. Resin-coated - conformal coating, miniature size, combined with high performance features. The anode lead is in the center while both outside leads are cathode leads. The three-lead design makes backwards insertion impossible (polarized, but you would have to work at making a bad connection), this is a time saving option, enabling assembly without having to visually determine polarity. This also helps prevent damage to circuit board and components that may result from incorrect installation.

KEMET also makes a three lead epoxy dipped tantalum capacitor T396, Here is a picture of the T396 KEMET Tantalum capacitor.

Vishay-Sprague marks there capacitors with a number 2 inside a circle and KEMET marks their capacitors with a K with a line above and below the K. The capacitor in the picture is a 100uF capacitor,max operating voltage of 10 volts and the second "K" is a tolerance indicator of ±10%.

Hard to see the other ones, how are they marked?

Thanks so much for all the info Burt!

There are two sizes of the larger ones with 3 leads. Super hard to read all these little guys!
Looks like the two larger:
476 6k
475 10k

smaller 2 leads types:
k5u 105m
k5k 104
k1k 103

That makes sense, because the small ones didn't seem to be the right shape. The larger ones looked similar to other tantalum epoxy I had but that third lead and odd shape threw me. Thanks Burt

Originally Posted by bigburtchino

Red - TantalumRecycling will need to tell you yea or nae on what is or isn't a tantalum capacitor. I do believe the three lead yellow epoxy resin dipped capacitors are indeed tantalum capacitors. They look to me to be Vishay-Sprague Solid Tantalum Capacitors, specifically 299D - Solid-Electrolyte TANTALEX®:Tripole®, triple lead. Resin-coated - conformal coating, miniature size, combined with high performance features. The anode lead is in the center while both outside leads are cathode leads. The three-lead design makes backwards insertion impossible (polarized, but you would have to work at making a bad connection), this is a time saving option, enabling assembly without having to visually determine polarity. This also helps prevent damage to circuit board and components that may result from incorrect installation.

KEMET also makes a three lead epoxy dipped tantalum capacitor T396, Here is a picture of the T396 KEMET Tantalum capacitor.

Vishay-Sprague marks there capacitors with a number 2 inside a circle and KEMET marks their capacitors with a K with a line above and below the K. The capacitor in the picture is a 100uF capacitor,max operating voltage of 10 volts and the second "K" is a tolerance indicator of ±10%.

Hard to see the other ones, how are they marked?

This indeed are Tantalum Capacitors --- Again a very small amount of these are produced annually. But, we will take this type of capacitor. If you would like please send us a sample of two of these capacitors and we will have them tested at our facility.

Originally Posted by bigburtchino

Red - Hard to say with 100% accuracy, but with just your markings I would say all are made by KEMET. The 476 6K and 475 10K are KEMET T396 Tantalum capacitors.

Based on the marking info. only the K8U 105M, K5K 104, and K1K 103 are also made by KEMET, but are not Tantalum capacitors. They are ceramic radial capacitors similar to this one.

Big is absolutely right these are NOT Tantalum Capacitors.

Originally Posted by ScrappinRed

That makes sense, because the small ones didn't seem to be the right shape. The larger ones looked similar to other tantalum epoxy I had but that third lead and odd shape threw me. Thanks Burt

Yes the larger ones look like a thicker egg drop shape capacitor but indeed the inside of the capacitor is the same as regular Epoxy Capacitors.

ScrappinRed: Not to hijack thread: But if you are gutting that board.. be sure to pull those socketed PROMS and/or possibly E-Proms (The ones with stickers may have a window underneath)

Ok. Back to Tantalum Talk!

bigburtchino, that was very helpful for me. I was going to waste my time and others, photoing some caps asking if the were good or not. Now I know for certain they are not. Mike

Originally Posted by bigburtchino

Red - I always use a magnet as one method of identifying tantalum capacitors. Almost all tantalum capacitors seem to have some magnetic properties, Tantalum is not a magnetic metal (does not generate a magnetic field), it is a paramagnetic metal, it will react to magnetic fields. Most tantalum capacitors (95%+) that I have encountered have a strong magnetic pull. I suspect most of the "magnetic pull" has to with the manufacturing process and the other materials used to make tantalum capacitors. Many TC's have a pure nickel wire welded to a tantalum wire on the anode portion of the capacitor. The cathode connection can also be a nickel, or kovar wire both of these type of leads and the glass‑to‑metal seal are highly magnetic. Quoting a NASA document that specifies the material requirements for building spacecrafts, "Non‑magnetic tantalum capacitors are difficult to find". So I use a scrappers best tool, a magnet to help quickly ID tantalum capacitors. They do make non-magnetic TC's, so I'm not saying all TC's are magnetic, just most of them are!

Red - Can you check the three lead TC's with a magnet, confirming as I'm sure they will also be magnetic. Now for "$hits & giggles" check the ceramic capacitors on your circuit board, are they magnetic?

Absolutely 100% True.

Originally Posted by Smb

Good day, using a scrapper sound the best way. I am mew to this i tried scrapping a pc board and alot of very tiny brownish capacitors stuck to magnet. Marking next to these are c then number also cb, L, yellow and black square one i know from above pictures but there is also a square black one positive marking but that has a d and number marking on board. If Anyone can help thank you. I have 1437 grams of the square black and yellow ones and 356 grams ( tear drop?) ones.

Can you please provide us a picture of what type you are speaking about. This would be the easiest way to check if it is Tantalum or Not.

Originally Posted by kane333

Here's a Video showing how to help identify SMD (Surface Mount Device) and other Tantalum Capacitors. It's a bit lengthy video but informative. Hope this helps.

This is a good video -- And is correct.

should have waited to post. have a question on these. are they wet tant? or just electrolytic. they came out of the housings shown, looked through all pics couldn't find similar: