Need help identifying these and which have PMs

I have come across a few boxes of old arrow space parts and PCBs. I haven’t done much research on the capacitors and resistors and such. I was hoping someone could give some guidance on how to identify these.

striped items are usually allen-bradley resistors

I am afreid i do not se any thing with PM
i hope some body else do.
Henrik

Some appear to have or contain Tantalum.

First pic - in the upper right hand corner is a silver mica capacitor

Second pic - in the upper left hand corner & as well upper center of pic are also silver mica capacitors

here is a link for a clear identification of silver mica capacitors

:arrow: https://en.wikipedia.org/wiki/Silver_mica_capacitor

I have a couple coffee cans full of them but don't intend to process them unless silver goes up to $25 - $30 ozt

Most the rest is trash - other then in the last pic the CAP at the right maybe tantalum

Kurt

Great! Thanks guys for the guidance. Since laid off have more time to dig I to other components.

kurtak said:

other then in the last pic the CAP at the right maybe tantalum

Kurt

Click to expand...

It is not a Ta cap

Also the square blue part in the middle of the pile is a through hole MLCC. mot old but make for wire wraps and bread boarding.

In the bags looks like there is some T07 as well and maybe a Ta cap thats yellow (hard to tell)

Eric

Just my 2 cents worth, but to add to the others if it helps...

1st pic... the yellow ceramic capacitors... I have heard that they can contain silver, but not always or if they do, not in the volume as those silver-mica "dogbone" capacitors already mentioned by others. I myself am saving those for possible "why not" processing some time in the future when bored (once I'm experienced more with pyrolyzing) just to see what I may get out of a big hoarded stash of them lol

2nd pic... center black tiny item with 3 crooked legs... one of many types of transistors that, like ICs, can contain gold bonding wires and usually processed with IC's. Others may have more experience from actually processing them as to whether or not the average yield is even worth it or not to save them.

Also 2nd pic... center-bottom slime green color resistor... I not too long ago saw elsewhere where those types of ceramic resistors can sometimes have gold plated ends on the inside... but again... not always.

3rd pic... from best I can tell looking into the bags, looks as if you might have a couple more of those possible tantalum capacitors like the last picture, but hard to say for sure what all else you might have in the bags that may not be sampled out like the pieces on the floor.

2nd time I've shared this link today. Hope it helps.

https://goldrefiningforum.com/phpBB3/viewtopic.php?f=49&t=26628&p=305760&hilit=Tantalum+capacitors#p305760