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Subject:	Re: Lead-free HASL
From:	Dennis Fritz <[log in to unmask]>
Reply To:	TechNet E-Mail Forum.
Date:	Thu, 30 Oct 2003 11:57:57 EST
Content-Type:	text/plain
Parts/Attachments:	text/plain (42 lines)

Happy, the contact for lead free HASL was/is Greg Bartlett,  at Teledyne
HALCO.  He spoke at IPC Alternate Final Board Finishes Committee in 2001 for the
Lead Free HASL Users Group.  Phone I have for Greg is 603-889-6191, ext 239.
E-mail I have for Greg is [log in to unmask]

My understanding is that problems of putting lead free solders in a HASL
machine had been pretty well worked out.  Seems to me they were dross formation,
attack on stainless steel, etc.  Of course, operation had to be at a hotter
temperature than eutectic solder.

Denny Fritz
MacDermid
Chair of IPC Alternate Final Board Finishes Solderability Test -5-23d

******************************
Subj:    [TN] Lead-free HASL
Date:   10/30/03 9:02:01 AM Central Standard Time
From:   [log in to unmask] (Happy Holden)
Sender: [log in to unmask] (TechNet)
Reply-to:   [log in to unmask] (TechNet E-Mail Forum.), [log in to unmask]
To: [log in to unmask]

We have a customer asking for Pb-free HASL.  I am not familiar with this
finish.  The temperature for Pb-free solder would be quite high and the
effects on a board, as well as the HASL equipment might be detrimental.
The customer says it is used in Japan, he quotes a Matsushita Electric
news release.  The release seems to indicate that they are using a
lead-free solder paste but  that word is not used, just "PCBs with
lead-free solder".  Does anyone know of a Pb-free HASL process?

Happy Holden

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