Killed the cat too , Ed
Most components , as you said, would not live with another 20'C .
Especially with LED's its a battle to keep them alive .
Would be high price and risk to pay for cheap flux and solder ; we still
foam the no clean (spray proved too messy)
Did you like that Electrovert new gas delivery (is it alpha wave ?) ?
Paul
> ----------
> From: Ed Holton[SMTP:[log in to unmask]]
> Sent: Tuesday, 18 August 1998 5:36
> To: [log in to unmask]
> Subject: Re: [TN] Hydrogen/Nitrogen saftey issues
>
> Dennis (and others) if I may ask, why do you want to put this mix in
> your
> reflow oven. What assembly process/technolgy is this used for? I
> asked a
> question on technet several months ago about using nitrogen/hydrogen
> in the
> reflow process, because I was told that the hydrogen, at temperatures
> above
> 300C (or 350C from another source) will actually clean the surface of
> an
> area to be soldered, thus eliminating flux. Obviously at this
> temperature,
> you would need a high temp solder, and components that can withstand
> the
> high temperatures. Curious minds want to know, who is using this, and
> why?
> It is my understanding that Electrovert has investigated this, but my
> contact person did not say much. I think they are still
> investigating.
>
> CURIOUS MINDS WANT TO KNOW!!!!!!!!!!!!!
>
>
>
>
> [log in to unmask] on 08/17/98 02:39:36 PM
>
> Please respond to [log in to unmask]; Please respond to
> [log in to unmask]
>
> To: [log in to unmask]
> cc: (bcc: Ed Holton/Hella North America Inc.)
> Subject: [TN] Hydrogen/Nitrogen saftey issues
>
>
>
>
> From: Dennis J Fall@TFT on 08/17/98 01:39 PM
>
>
> To: [log in to unmask]
> cc:
> Subject: Hydrogen/Nitrogen saftey issues
>
> I am looking for some information regarding the safety of reflow ovens
> using a 15% Hydrogen 85% Nitrogen atmosphere. If anyone has had
> experience
> using this concentration or something close to it, please let me know.
> Maybe we can discuss any safety issues that may pertain to the
> process.
>
> Thank You,
>
> Dennis Fall P: 507-625-8445 x17
>
> Process Engineer F: 507-625-3523
>
> Thin Film Technology Corporation mailto:[log in to unmask]
>
> 1980 Commerce Drive http://www.thin-film.com
>
> North Mankato, MN 56003-1702
>
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