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Can someone post some pics of Dallas switches? I am having trouble telling the difference between IC's and Dallas switches... Google wasn't much help... Is there an easy way to tell the difference?

∆ this

And Mercury wetted relays

Given how important it is (hazmat)
It's hard to watch out for them having never seen one

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Representin otown, central FL

Battery backed Real time clock IC boards: aka Dallas Switch
These are unacceptable

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Battery backed real time clocks with batteries removed: peripheral rate

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Mercury:

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Also Mercury

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Also Mercury
And finally you may see these on old equipment.

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tHANK YOU EVERYONE!

For mercury relays,

Attempt to remove or place whole board in hazmat?

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Representin otown, central FL

For dip (IC) style, only ones in sockets. Otherwise the board is hazmat.

For canister style if you have enough experience to make clean breaks in a PCB you cou punch a hole around it and remove the can from the board. But generally best to hazmat the whole board.

For tube style they usually have a quarter or half turn socket. Push down gently and try to turn it. Some are clockwise some counter-c.

Mercury is a neurotoxin. Impossible to clean up in quantity without experience, and causes toxic stains in organics and cloth. If you aren’t 100 percent sure you can remove it safely don’t try.

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