SCHEDULING OF PRINTED WIRING BOARD ASSEMBLY IN SURFACE MOUNT TECHNOLOGY LINES

2002 ◽  
Vol 11 (01) ◽  
pp. 1-17 ◽  
Author(s):  
TADEUSZ SAWIK ◽  
ANDREAS SCHALLER ◽  
THOMAS M. TIRPAK
Keyword(s):  
Surface Mount Technology ◽  
Printed Wiring Board ◽  
Surface Mount ◽  
Wiring Board

scholarly journals A V-Shape Optical Pin Interface for Board Level Optical Interconnect

2018 ◽  
Vol 10 (1) ◽  
pp. 20
Author(s):  
Nur Najahatul Huda Saris ◽  
Osamu Mikami ◽  
Azura Hamzah ◽  
Sumiaty Ambran ◽  
Chiemi Fujikawa
Keyword(s):  
Optical Networks ◽  
Optical Interconnects ◽  
Printed Circuit Boards ◽  
Data Centers ◽  
Low Cost ◽  
Optical Interconnection ◽  
Surface Mount Technology ◽  
Optical Surface ◽  
Printed Wiring Board ◽  
Surface Mount

This paper introduces a new interface of an optical pin for Printed Circuit Boards (PCBs), the V-shape cut type which is an innovation from the 90-degree cut type optical pin. The effectiveness is determined by optical characteristics through OptiCAD and by experiment. The simulation used a model of ray tracing analysis which is a one to two (split) connection function model. For the experiment, a Polymer Optical Fibre (POF) V-shape optical pin has been fabricated. It was found that the V-shaped optical pin has a multi-branched function and is applicable to optical interconnection. Full Text: PDF ReferencesMikami, O., et al. Optical pin interface for 90-deg optical path conversion coupling to Printed Wiring Board. in Region 10 Conference (TENCON), 2016 IEEE. 2016. IEEE. CrossRef DeCusatis, C., Data center architectures, in Optical Interconnects for Data Centers. 2017, Elsevier. p. 3-41. CrossRef Duranton, M., D. Dutoit, and S. Menezo, Key requirements for optical interconnects within data centers, in Optical Interconnects for Data Centers. 2017, Elsevier. p. 75-94. CrossRef ITOH, Y., et al., Optical Coupling Characteristics of Optical Pin with 45° Micro Mirror for Optical Surface Mount Technology. Journal of The Japan Institute of Electronics Packaging, 2001. 4(6): p. 497-503. CrossRef Uchida, T. and O. Mikami, Optical surface mount technology. IEICE Transactions on Electronics, 1997. 80(1): p. 81-87. CrossRef Papakonstantinou, I., et al., Low-cost, precision, self-alignment technique for coupling laser and photodiode arrays to polymer waveguide arrays on multilayer PCBs. IEEE Transactions on Advanced Packaging, 2008. 31(3): p. 502-511. CrossRef Nakama, K., et al., Optical connection device. 2006, Google Patents. DirectLink Ramaswami, R., K. Sivarajan, and G. Sasaki, Optical networks: a practical perspective. 2009: Morgan Kaufmann. DirectLink Tong, X.C., Advanced materials for integrated optical waveguides. 2014: Springer. CrossRef

Fatigue Analysis of a Planarpak™ Surface Mount Component

1991 ◽  
Vol 113 (2) ◽  
pp. 194-199 ◽  
Author(s):  
I. Sharif ◽  
D. B. Barker ◽  
A. Dasgupta ◽  
M. G. Pecht
Keyword(s):  
Fatigue Life ◽  
Thermal Stresses ◽  
Three Dimensional ◽  
Printed Wiring Board ◽  
Surface Mount ◽  
Dimensional Finite Element ◽  
Life Analysis ◽  
Fatigue Life Analysis ◽  
Wiring Board ◽  
Three Dimensional Finite Element

This paper discusses the thermo-mechanical fatigue life analysis of an analog Avantek Planarpak™ surface mount device where the entire base of the component is soldered directly to the printed wiring board. The critical thermal stresses and strains are analyzed with the help of two and three-dimensional finite element models. The effect of solder voids and incomplete bonding is also investigated. The paper also shows how fatigue life estimations can be made using q generalized form of the Manson-Coffin equation even though the maximum solder attach stresses are found to be elastic.

Influence of Surface Mount Lead End Geometry on Fatigue Life

1994 ◽  
Vol 116 (2) ◽  
pp. 157-160 ◽  
Author(s):  
Vineet K. Gupta ◽  
Donald B. Barker
Keyword(s):  
Fatigue Life ◽  
Solder Joint ◽  
Thermal Fatigue ◽  
Coefficient Of Thermal Expansion ◽  
Printed Wiring Board ◽  
Surface Mount ◽  
Compliant Surface ◽  
Board Surface ◽  
Cte Mismatch ◽  
Wiring Board

The local coefficient of thermal expansion (CTE) mismatch between compliant surface mount component leads and the solder that is used to attach the components to a printed wiring board can dramatically influence the thermal fatigue life of the solder joint. To quantify the contribution of the local CTE mismatch to the overall thermal fatigue damage of the solder joint, a finite element thermal fatigue simulation using an energy partitioning technique is used to compare four different lead end shapes. The four lead configurations considered are J-lead, and three gullwings leads; one with the foot parallel to the board surface, one with the foot sloped slightly downward towards the board, and one with the foot sloped slightly upward. The dimensions of the leads are purposely chosen so that the in-plane compliance is equal for the different lead shapes, only the shape of the lead end varied. Comparisons are first made with equal solder joint heights and then the solder height of the gull-wing lead is varied between 0.05 to 0.23 mm (2 to 9 mils). The influence of the solder wetting angle is also investigated.

Toward Manufacturing Low-Cost, Large-Area Electronics

MRS Bulletin ◽  
2006 ◽  
Vol 31 (6) ◽  
pp. 471-475 ◽  
Author(s):  
Marc Chason ◽  
Daniel R. Gamota ◽  
Paul W. Brazis ◽  
Krishna Kalyanasundaram ◽  
Jie Zhang ◽  
...  
Keyword(s):  
Printed Electronics ◽  
Low Cost ◽  
Consumer Products ◽  
Electronic Systems ◽  
Printed Wiring Board ◽  
Large Area ◽  
Active Devices ◽  
Materials Research ◽  
Wiring Board ◽  
Large Area Electronics

AbstractDevelopments originally targeted toward economical manufacturing of telecommunications products have planted the seeds for new opportunities such as low-cost, large-area electronics based on printing technologies. Organic-based materials systems for printed wiring board (PWB) construction have opened up unique opportunities for materials research in the fabrication of modular electronic systems.The realization of successful consumer products has been driven by materials developments that expand PWB functionality through embedded passive components, novel MEMS structures (e.g., meso-MEMS, in which the PWB-based structures are at the milliscale instead of the microscale), and microfluidics within the PWB. Furthermore, materials research is opening up a new world of printed electronics technology, where active devices are being realized through the convergence of printing technologies and microelectronics.

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