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Journals and Conferences
With the RoHS deadline approaching by July 1, 2006, many manufacturers are aggressively eliminating the use of lead in consumer electronic products. However, the development of lead-free products requires close cooperation between end-product manufacturers and component manufacturers because metallurgies, resin materials, reflows conditions and moisture… (More)
The tapered fiber microlens (TFM) enhances efficient coupling between the elliptical Gaussian pattern laser diode and single-mode fiber. The hyperbolic-end microlens has much higher coupling efficiency than the hemispherical-end microlen due to efficient mode matching and phase matching.
In the study, one 14x14 lead free CSP BGA with 0.3 mm/0.5 mm ball diameter/pitch was adopted as test vehicle. The intermetallic compounds morphology evolution which can be generated when using SnxAgCu and SnAgCuX solder ball in combination with electrolytic NiAu-plated substrates was investigated during 150degC thermal aging, such as single layer SnNi IMC… (More)