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| Date: | Fri, 17 Nov 2006 08:34:57 -0000 |
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Joyce,
I can't say it is preferable but how does one solder a board using SnPb solder with the odd PbF part whilst trying to ensure the profile will provide sufficient time above Solidus (Werner see I've learned!) to enable a satisfactory soldered joint?
Regards,
Iain.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Joyce Koo
Sent: 16 November 2006 15:34
To: [log in to unmask]
Subject: Re: [TN] BGA anomaly
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Are you sure you want SnPb at 74 sec with peak of 232 C (232-183=49 C)...
abcd
-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Werner Engelmaier
Sent: Thursday, November 16, 2006 9:51 AM
To: [log in to unmask]
Subject: Re: [TN] BGA anomaly
In a message dated 11/16/06 6:19:19, [log in to unmask] writes:
> The reflow profile peaked @ 232C with time above liquidus for, 1) SAC - 29
> secs 2) SnPb - 74 secs.
>
Where did you get "time above liquidus"--I think you mean "time above Solidus"
—which is an entirely different thing.
Werner
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