GAS TIGHT SOCKET

[jalover]

Is there anybody who knows what is meant by "gas tight socket? Can you give me some description? thanks for your help.

 

[itsmoked]

This is pertaining to what?


Keith Cress
kcress -

http://www.flaminsystems.com

 

[jalover]

its pertaining to electrical socket or receptacle. Is the gas tight & air tight same? Or is it the gas tight socket same as Ex-proof type socket.
thanks for your reply.

 

[ScottyUK]

It really depends on factors such as: what is the gas? What is the temperature of the gas? What pressure differential exists across any seal or barrier?

For example, high pressure helium or hydrogen is pretty challenging because the molecules are small; air-tight at near-atmospheric pressure is relatively easy. HF gas at any pressure is challenging because it is so reactive. Without further qualification it is an essentially meaningless as a specifcation. Sorry!


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If we learn from our mistakes I'm getting a great education!

 

[MikeHalloran]

I think the "gas-tight" appellation was used on a generation of tin-plated IC sockets that boasted modest spring force and miniscule contact area, resulting in nominally high contact pressure.

They were an unmitigated disaster, because of tin crystallization and whisker growth.



Mike Halloran
Pembroke Pines, FL, USA

 

[Mike2468]

The connector company BERG used GTH (gas tight high pressure)on a variety of connectors (IC sockets, card edge, etc). Back when gold went to $800 in the late 1970s, the thought was that you could use tin plated connectors that had a point of very high pressure, thus making that point gas tight so no fretting corrosion would occur. As MikeHalloran said, sometimes good, but sometimes not so good.

 

[ScottyUK]

Amazing how an original question with incomplete detail leads to such different explanations from those working in the process industries and those working in microelectronics! Thanks to the two Mikes for the alternative - interesting.

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If we learn from our mistakes I'm getting a great education!