What do you guys think? They have some sort of heavy ceramic backing so im trying to figure out if shipping these would make sense financially. http://i.imgur.com/UrrNK07.jpg
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What do you guys think? They have some sort of heavy ceramic backing so im trying to figure out if shipping these would make sense financially. http://i.imgur.com/UrrNK07.jpg
If those are MLCCs soldered to the board, they could have palladium and/or silver. Do you have a better picture of the board? And do you know what type of equipment it was pulled from? The fact that the electronic traces are on a ceramic board, and the fact the metal has some colorization that looks like it was caused by heat, would lead me to believe this was some type of application where there was a lot of heat around the board. Were there any wires or thermocouple that came with this or connect to it? Also, the silver material on the right hand side has a yellowish tint to it, as if it were maybe colorized due to heat, or might be chromium over some other metal.
It's difficult to tell from the picture, maybe if you provide a few more someone can identify what you have there.
Scott
def not gold
More pics :) As far as what they came out of I have no clue, how you see them is how I got em. I tried everyeverything to get the backing off but it seems impossible without breaking the board. If you guys do not see anything valuable then im going to toss them, they have caused me too much frustration already.http://i.imgur.com/C1dR6hD.jpghttp://i.imgur.com/961XE2R.jpghttp://i.imgur.com/Z87SnZy.jpghttp://i.imgur.com/17aaUTt.jpgQuote:
Originally Posted by NobleMetalWorks
Is that a metallic backing of some sort, is it ceramic on top of aluminum? Or is it ceramic plated with a metal?
I downloaded your picture and made note of a few areas to make it easier in pointing out specific areas of the board.
https://dl.dropboxusercontent.com/u/...es/C1dR6hD.jpg
1. I'm not sure if this is some sort of bracket, or wire. If it's a wire and meant to conduct electricity at high heat, it might be a small piece of thermocouple.
2. This looks like copper plating, but it also looks like there is either something that used to plate on top, or oxidation of the copper have exposed another metal underneath, or it's just copper oxidation.
3. You can see where the copper trace leads right up to another type of metal that has colorized more than the copper. This could mean it's some type of precious metal that oxidizes easier than copper. This also could mean that it's silver, or silver plating. Both copper and silver oxidize and colorize, but silver tends to in the way you see in the picture, while the copper as I explained in circle 2 might have been coated with something or some other metal that prevented oxidation.
4. This looks like the metal, whatever it might be, became so hot that it bubbled a little, or another layer of a metal was laid down on top of another. You might want to take a pocket knife and scrape some of the metal off to see what's underneath.
5. More colorization of whatever metal is plated that would lead me to believe this was subjected to a lot of heat.
6. You might want to google some of these numbers, it might tell you who the manufacturer is, or what the part number of this board is and what it was intended for.
7. These look like MLCCs to me, which contain either silver or palladium or both.
You might want to pick up an inexpensive scratch stone and acid test kit. It could make the difference between accidentally tossing something of value, or choosing to keep it.
Scott
Wow! I did not expect such a detailed reply. I can not thank you enough for your time and effort. The back is some sort of black ceramic type stuff, it looks like it was sprayed with some sort of metallic coating where the back of the board lays on it. I think I will be knocking the MLCCs off and putting the rest aside to test when I have the time like you said just to be sure before I toss.
NOBLE, quesiton for You.. what is the pallidium cap that youre refering to.? you've a picture you can send me of some sort of example thanks.
pcscapper -
http://www.murata.co.jp/murataelectr...ct/img/p_1.jpg
The precious metal content varies in these.
Ryan beat me to it, but these are exactly what I was referring to.
Thank you Ryan!
Scott
Quote:
Originally Posted by ryanw
I get very similar looking boards out of police, bus, and motorolla radios. They have 100% aluminum or magnesium enclosures with the boards in their own little compartment/inlays. Some boards inside are nicer than others and some are populated with some gold legged IC chips and some sort of other gold transistor screw.
Would make sense! I got them dumpster diving at a family friends buisness. The owner is a CB/scanner radio hobbyist and is always tinkering with that sort of stuff.Quote:
Originally Posted by ScrapYaHerd
Rusty, keep your eye out on the old boards from CB's and scanners and you might find a few of these on the boards;Quote:
Originally Posted by rustyshackleford
http://i1135.photobucket.com/albums/...Untitled-3.jpg
Yes those are gold legs and backs.
Wow, I hope. Usually I only get a couple lbs of aluminum and a few nail ridden 2x4s to the ass, the electronic stuff is rare from there but definitely welcomed ;)
Why must you dumpster dive at a family friends business? Seems you'd have him and all his friends and neighbors saving stuff for ya. haha, just sayin ; )Quote:
Originally Posted by rustyshackleford
I would hate to impose on him, he lets me dig through it and i am grateful just for that. Plus I kind of like the thrill of the hunt :) Its like a smelly treasure chest haha.Quote:
Originally Posted by Bear
I have to admit something here, just because where this thread has gone on dumpster diving...
When I was in the grocery business, I used to leave my dumpster unlocked, until it became impossible to do so. But during the time I kept it unlocked, other people would dump things in it.
Also, when you are in the grocery business you have to be aware your employees are your biggest problem so far as theft is concerned, they will throw things away only to pick them up later that night, or they will accidentally throw things away that never should have been. So I made a habit of checking my dumpster on a daily basis. Funny thing is that I not only found things that were thrown away and should not have been, but I also found things other people had thrown away in my dumpster, that were useful.
Even in my own garbage.
Scott
Tell me about it! When I had a dumpster dropped outside my house for renovations it turned into the neighborhood dump. I had to yell at a guy I caught dumping a couch and he was confused as to why I was so upset about it. The darn thing cost me 500 bucks thats why :/Quote:
Originally Posted by NobleMetalWorks
I have been pulling mlccs off of boards for the last year now or so and im up to 1/2 pound worth about $50. I dont think its worth the time to pull them unless you have a board covered with the big ones. I can make $50 hour scrapping out crt's. So its really not worth it to sit there for hours pulling mlccs, maybe if you do it while watching tv. But theres definetly better ways out there to make money.