Mercury wetted or ruthenium for reed relay? - diyAudio
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Old 11th August 2005, 06:19 PM   #1
mzzj is offline mzzj  Finland
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Location: 65N 25E
Default Mercury wetted or ruthenium for reed relay?

Wich one is better for line-input and attenuator reed-relays?

ruthenium sputtered ones are usually specially mentioned as dry-switcing and Hg wetted are more robust workhorses, but i think Hg ones should be suitable also for small signals.

Is there some thermoelectric voltage issue with Hg or why it is not usually specified for small-signal use? (not a problem in audio equipment but maybe in measurement systems)

I located a source for CP-Clare mercury wetted and ruthenium sputtered reed relays for 0.35 and 0.42 euros apiece so I am not even thinking about Elnas rotary switches anymore.
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Old 11th August 2005, 06:57 PM   #2
EUVL is offline EUVL  Europe
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> I located a source for CP-Clare mercury wetted and ruthenium sputtered reed relays for 0.35 and 0.42 euros apiece

Are they new or removed from used equipment?

Clare mercury wetted relays (DPDT, 2A, shielded) cost US$ 120- per piece from Newark, new !!!!

If I were you, I'll get them now. From 2006, they are banned from import into Europe (poisonous to environment).


Patrick
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Old 12th August 2005, 04:56 AM   #3
mzzj is offline mzzj  Finland
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Quote:
Originally posted by EUVL

Are they new or removed from used equipment?

Clare mercury wetted relays (DPDT, 2A, shielded) cost US$ 120- per piece from Newark, new !!!!

If I were you, I'll get them now. From 2006, they are banned from import into Europe (poisonous to environment).

Patrick [/B]
New, but probably some sort of industry surplus. Couple of years old anyways as CP-Clare is not manufacturing relays anymore.

Enviromental regulations might be one reason why they are cheapish, Nokia is dumping their uncompatible stock to surplussales.
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Old 12th August 2005, 05:31 AM   #4
EUVL is offline EUVL  Europe
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Could you disclose the source ? I would love to get some.
You can email me at ybpkwan@yahoo.com

Thanks,
Patrick
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Old 12th August 2005, 06:52 AM   #5
mzzj is offline mzzj  Finland
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Quote:
Originally posted by EUVL
Could you disclose the source ? I would love to get some.
You can email me at ybpkwan@yahoo.com

Thanks,
Patrick
Have to order my own relays first

I am not sure if they are willing to do business abroad, this is small Finnish company.

I could probably sent some of them for you to germany, Preferably by multiples of 35 pieces. Postal costs should be minor and money transfer within EU is free of charge.
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Old 12th August 2005, 07:16 AM   #6
EUVL is offline EUVL  Europe
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> I could probably sent some of them for you to germany,

Very kind of you.

> Preferably by multiples of 35 pieces.

35 or even 70 pieces are no problem, but I need to know the specs first. Would you have a Clare model number ?


Patrick
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Old 12th August 2005, 07:25 AM   #7
mzzj is offline mzzj  Finland
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Quote:
Originally posted by EUVL
>

35 or even 70 pieces are no problem, but I need to know the specs first. Would you have a Clare model number ?

Patrick
I would be intrested to know exact specs also

CUP/CUPV series:

NC, MYAD, mercury wetted
CV60202
12V 1100R coil

NO, DYAD, sputtered rhutenium??
CV10102
12V 1100R coil
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Old 12th August 2005, 07:39 AM   #8
mzzj is offline mzzj  Finland
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Am I blind or what a hell.

for CUPV60202
http://www.aeneas.com.cn/PDF/SUMIDA/...RMANCE/CUP.pdf
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Old 12th August 2005, 07:49 AM   #9
EUVL is offline EUVL  Europe
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I found it as well.
Shall have a look and let you know.

Patrick
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Old 12th August 2005, 08:00 AM   #10
EUVL is offline EUVL  Europe
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OK. Not the best specs I have ever seen (contact resistance 100mohm), but what the hack at that price. I'd take 35 pcs of the mercury wetted (CUPV60202) if you wouldn't mind the trouble. Please send me a email so that we can sort out the rest.

Also please kindly give me an estimate for the postage to Germany before ordering (I would guess something like 5 Euros, but you never know).


Thanks,
Patrick
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