Electronics Forum: r520a (6)

Lead Free paste

Electronics Forum | Tue Nov 07 14:34:04 EST 2006 | jeffm

We are using Kester Type R520A, Alloy SN96.5/A63.0/CU.5 paste which is applied using an MPM Accuflex machine. Our plant Humidity is 38 degrees. We are seeing insufficient paste post stencil on fine pitch parts. Could this be an environment issue? In

Lead Free paste

Electronics Forum | Wed Nov 08 08:59:54 EST 2006 | Amol Kane

well, if in the past you havent seen this issue, then something in the process has changed......as any good process engineer should do, investigate it.....new batch of paste?, expired paste?, clogged stencil?, change in programming parameters?, chang


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