Poh,
You might want to check if the lead frame is made out of Alloy 42. We
had a similar problem to what you described last year. The solder
looked good but the joints failed. It was due entirely to the Alloy 42
lead frame material.
Max Bernhardt
Woodward Governor Co.
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From: Poh Kong Hui
To: [log in to unmask]
Subject: [TN] (TN): ASSY: Good Joint