QFP Coplanarity Error

I am sorry, they are fine-pitch QFPs (20 mils)

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Poor man's approach to assessing coplanarity issues: * Get two pieces of 2X4 wood that are the same length, about three inches long * Cut the end of one of the pieces at a 45* angle, so that the 45* angle cut leaves a face on the four inch side of the piece of wood * Glue the two pieces together on the four inch sides, so that the 45* cut faces outward. * Do something to the surfaces of the wood do de-ESDify them, making it easier for the ESD-person to maintain composure when he / she catches you doing this thing * Glue a mirror to the 45* face

Tada!!! You have made a Dave's Wonder Coplanarity Meaurementometer & Assesserer. Here's how you use it: * Position the tool [assesserer] so that the 45* mirrored face is is at a 45* angle to the table and the flat surface that was the piece of 2X4 that was not cut is away from the table. * Place the component [assessee] on the top [the flat surface that was the piece of 2X4 that was not cut] of the tool [assesserer] * Scoot the component [assessee] so that leads are hung-out over the edge along the mirrored face. * Look into the mirror and assess the assessee

Anyone not confused raise your hand.

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