Hi Steve
We don�t double reflow this part. We wouldn�t consider it without a fixture or some other support.
You know that sound, the almost involuntary sound that patrons in a restaurant make when a waiter drops a glass or a tray? It�s kind of an �oooooo� sound. Well if you run these parts, the sound that the troops at your plant will make will be so loud as those pups start Peter Panning to the floor that the people in the front will stop playing games on the computer and walk out back to find-out what�s going on.
Do the numbers: * Part weight: 15.1 gm * Lead toe to heel: 0.46/0.66 mm * Lead width: 0.17/0.27 mm
Lead wetting area = 240* [0.46*0.17] mm^2 = 18.7 mm^2 [0.03inch^2] Weight of component to total pad mating area ratio: 15.1 gm / 18.7 mm^2 = 804.6 mgm per mm^2 [519.1 gm per inch^2]
A commonly acceptable ratio is: 50 mgm per mm^2 [30 gm per inch^2] Pushing the boundary ratio is: 44 gm per inch^2
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