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Wed, 21 Feb 2001 10:37:50 -0200 |
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Hi There,
Are you aware of the artificial ageing solderiability test procedure? This is a machine wich generates a cycle of steam, nitrogen purge and then oxygen. Any HAL solder coupon that passes that with good wetting should be good enough for your requirements.
Ken McGowan
----- Original Message -----
From: Yehuda Weisz
To: [log in to unmask]
Sent: Tuesday, February 20, 2001 4:27 PM
Subject: [TN] HASL thickness specification
Dear Technetters,
I am trying to write a spec. for solder levelled boards received from an outside vendor. The boards contain SMD (some - 0.019" pitch) and some pressfit connectors.
What solder thickness should I ask for if I wish the boards to maintain solderability after at least one year of storage (under normal conditions) and 3 reflow assembly cycles (sometimes even more).
Probably, all of you had seen specs that made no sense, I don't want to write another one.
I'll appreciate very much your inputs.
Yours,
Yehuda Weisz
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