Electronics Forum | Tue Mar 28 08:29:04 EST 2006 | davef
Pad design - Standard IPC 20 pitch QFP Thermal pad design - Layout the thermal pad 0mm to 0.15mm larger per side (0mm to 0.30mm larger overall) than the exposed die pad on the package. �Larger than�, as opposed to the same size, is preferred. Obvio
Electronics Forum | Tue Feb 04 22:28:16 EST 2003 | davef
You could reduce the paste by about 70%. Solder balling and tombstoning will be the issues to fight. The drivers to these don't change with the component size. Use the fine SMTnet Archives for background. Aperture Size and Thickness of Solder Pas
SMTnet Express, March 8, 2018, Subscribers: 31,288, Companies: 10,911, Users: 24,465 Optimization of Stencil Apertures to Compensate for Scooping During Printing Gabriel Briceno, Ph. D., Miguel Sepulveda; Qual-Pro Corporation This study
