Technical Library | 2017-09-28 16:36:33.0
These nano-coatings also refine the solder paste brick shape giving improved print definition. These two benefits combine to help the solder paste printing process produce an adequate amount of solder paste in the correct position on the circuit board pads. Today, stencil aperture area ratios from 0.66 down to 0.40 are commonly used and make paste printing a challenge. This paper presents data on small area ratio printing for component designs including 01005 Imperial (0402 metric) and smaller 03015 metric and 0201 metric chip components and 0.3 mm and 0.4 mm pitch micro BGAs.
Technical Library | 2009-11-24 23:00:34.0
With the introduction of 01005 chip components and 0.3 mm pitch CSP devices, electronic component packaging is pushing surface mount technology to the limits of its potential. Miniaturization is driving the electronics industry to implement the smallest and tightest pitch components in order to meet their customer demands. But how much miniaturization is possible before there is a paradigm shift in the technology? At what point is solder paste no longer viable? How small of a feature can be printed with solder paste, and can this process be implemented into a production environment?
SMTnet Express, December 31, 2015, Subscribers: 23,946, Members: Companies: 14,865, Users: 39,660 Study on Solder Joint Reliability of Fine Pitch CSP Yong Hill Liang, Hank Mao, YongGang Yan, Jindong (King) Lee; AEG, Flex (Flextronics International
SMTnet Express, April 30, 2020, Subscribers: 36,108, Companies: 10,995, Users: 25,780 Selective Solder Fine Pitch Components On High Thermal Mass Assembly Credits: ITW EAE The number of through-hole components on PCBs has declined significantly
, S28-02, 2011. 11. IPC, Design and Assembly Process Implementation for BGAs, IPC-7095 Standard, August, 2000. 12. J. Lau and Y.Pao, Solder Joint Reliability of BGA, CSP, Flip Chip, and Fine Pitch SMT Assemblies, ISBN 0-07-036648-9, McGraw Hill, 1997. pp