microswitch

[anarxi]

Has anyone processed them like this?
Is the gold there good or the same as on the motherboard connectors?

 

[eaglekeeper]

Has anyone processed them like this?
Is the gold there good or the same as on the motherboard connectors?

I have a small bucket of them...... they are low grade. I don't feel they are worthy of the time yet. If I run out of better material, then maybe.

 

[anarxi]

0,24 gramm
silver-palladium alloy 80/20.
The middle contact (normally open) is just a solid piece.
everything is silvered on top.
The thickness of the silver plating is visible after the burner.
people knew how to do 50 years ago.

 

[BShan]

Whenever I see a component which is the "wrong" color, I dig a little deeper. Microrelays, for example, are a pain to scrap, but when I do, it seemed like all the orange ones had gold plated silver alloy. And it's neat to have a soft fluffy ball of copper wire from the coil!

 

[electronicscrap]

Those may be "signal" relays, which jogged my memory, I have 2000+ of these and arthritis in both my thumbs.
Gold-clad silver says the datasheet.

 

[anarxi]

Those may be "signal" relays, which jogged my memory, I have 2000+ of these and arthritis in both my thumbs.
Gold-clad silver says the datasheet.

Greetings.
Yes, such small, microscopic relays are clearly not suitable for manual disassembly.
I read in your document that there may be relays with silver palladium alloy contacts.
this is already more interesting.....
If you do this alone, then I would look for a way to cut off the copper coil with a steel core from the rest of the relay parts....
some kind of matrix into which the relay is embedded.
Then cut off with one blow.
then pyrolyze the remaining plastic with contacts.
destroy the plastic.
then bathing in aqua regia, which will dissolve the brass and gilding.
Only silver-palladium contacts will remain.
melt them into one ingot and sell them, or refine them by separating silver and palladium.

 

[orvi]

0,24 gramm
silver-palladium alloy 80/20.
The middle contact (normally open) is just a solid piece.
everything is silvered on top.
The thickness of the silver plating is visible after the burner.
people knew how to do 50 years ago.

Shame I never run across these Pd ones just whatever kind of Ag ones. But I had better luck with soviet potentiometers and relays

 

[anarxi]

Shame I never run across these Pd ones just whatever kind of Ag ones. But I had better luck with soviet potentiometers and relays

such only until 1977, then simple silver...
there are similar mp1-1 there is an alloy with palladium, but 13%.
Such contacts are easy to distinguish; they have the shape of a pentagon.
the fattest is MP3-2 until 1982.
It's 84% white gold.
however, the Czechs and Germans (Eastern) of those years can also surprise and delight.

 

[orvi]

such only until 1977, then simple silver...
there are similar mp1-1 there is an alloy with palladium, but 13%.
Such contacts are easy to distinguish; they have the shape of a pentagon.
the fattest is MP3-2 until 1982.
It's 84% white gold.
however, the Czechs and Germans (Eastern) of those years can also surprise and delight.

old TESLA or RFT components weren´t that rich as soviet. Switches were rarely anything else than silver. And moreover, mainly TESLA wasn´t rich in PGMs in general. Germans used to make AuPd plated pins and some relays were AgPd, but TELSA only made few relays with AgPd30 points and that was basically it... MLCCs weren´t even manufactured in these countries, it was shipped here from russia.
And yeah, potentiometers, trimmers, majority of switches and caps - zero PMs inside.

 

[anarxi]

old TESLA or RFT components weren´t that rich as soviet. Switches were rarely anything else than silver. And moreover, mainly TESLA wasn´t rich in PGMs in general. Germans used to make AuPd plated pins and some relays were AgPd, but TELSA only made few relays with AgPd30 points and that was basically it... MLCCs weren´t even manufactured in these countries, it was shipped here from russia.
And yeah, potentiometers, trimmers, majority of switches and caps - zero PMs inside.

TAN connector assembled mother + father = 0.3 grams of gold, sockets for microcircuits are green, and connectors, Lun relays are solid gold and gold-plated palladium 30%, all Czech Republic are not very bad.
Germany, relay with TGL 6625 gold
tgl 200 3796- palladium 25%
3797- 30%
RFT keys with gold and palladium, since I came across a microswitch, the same as their orange and gray ones, but instead of a transparent plate there was textolite - gold nickel 90, 0.3 grams.
ceramic chips are all gold plated and so on,.
for capacitors and resistors with palladium - this is Bulgaria.