Electronics Manufacturing Technical Articles

Electronics Manufacturing Technical Articles

Papers and articles related to SMT, PCB & EMS industry.

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1757 SMT / PCB Assembly Related Technical Articles

Fundamentals of Solder Paste Technology

Mar 03, 2008 | Dosten Baluch, Gerard Minogue.

Solder pastes are key materials in surface mount technology (SMT) for assembly of printed circuit boards (PCBs). Introduction of lead-free has placed new demands on materials and processes in SMT, requiring materials and process engineers to adopt to lead free whilst ensuring process yields stay at the highest possible levels. Key is the solder paste, a material of great complexity involving engineering sciences, metallurgy, chemistry and physics. This article helps those working with solder pastes improve their understanding of this key material....

Publisher: BizEsp Ltd.

BizEsp Ltd.

The company is currently in liquidation.

Oxford, United Kingdom

Other

Manufacture and Characterization of a Novel Flip-Chip Package Z-interconnect Stack-up with RF Structures

Feb 26, 2008 | Michael J. Rowlands, Rabindra N. Das

More and more chip packages need multi-GHz RF structures to meet their performance targets. The ideal chip package needs to combine RF features with Digital features for these applications. They drive low-loss, controlled impedance transmission lines, flexibility in assigned signal and power layers, and clearances of various shapes in power layers. Building these features in a chip package is difficult without making the stack-up very thick or compromising the reliability of the product. In the present paper, we have designed and built a flip-chip package test vehicle (TV) to make new RF structures, using Z-axis interconnection (Zinterconnect) building blocks....

Publisher: i3 Electronics

i3 Electronics

A world leader in high-performance PCB fabrication & assembly, semiconductor packaging, systems integration & test, advanced laboratory services and contract R&D.

Endicott, New York, USA

Manufacturer

Placement Optimisation in a Lean Manufacturing Environment

Feb 20, 2008 | Pierre Chatain, Europlacer Limited, Dorset, UK

Tier 2 and Tier 3 EMS companies face increasing pressure from competition in low-cost manufacturing countries to produce assembled boards at lower cost, with increased complexity and to tighter deadlines. They also face an increasing amount of high-mix, small-to-mediumvolume production runs. Even OEMs find it hard to predict what products they will be manufacturing in three to five years time, driving the need to invest in highly flexible production tools that will cater to their needs over the lifetime of the equipment. This paper examines methodologies for optimising the process, improving stock control and providing greater traceability using lean manufacturing techniques....

Publisher: EUROPLACER

EUROPLACER

Europlacer designs and manufactures a comprehensive range of highly flexible SMT pick and place equipment for the global electronics industry, with a network of distributors across the globe.

Poole Dorset, United Kingdom

Manufacturer

Liquid Tin Corrosion and Lead Free Wave Soldering

Feb 12, 2008 | Jim Morris, Speedline Technologies, Matthew J. O’Keefe, Ph.D., University of Missouri

Corrosion of solder pots and solder pot components in wave soldering equipment has been reduced with the introduction of corrosion resistant coatings and improved lead free solder alloys. The latest trends in protecting wave solder machine components from liquid metal corrosion by lead free solder alloys will be presented in order to provide guidelines for evaluating existing equipment as well as for purchasing new systems....

Publisher: Speedline Technologies, Inc.

Speedline Technologies, Inc.

Speedline Technologies serves the electronics assembly and semiconductor packaging industries with class-leading equipment, responsive support and unparalleled process knowledge.

Franklin, Massachusetts, USA

Manufacturer

SnAgCuBi and SnAgCuBiSb Solder Joint Properties Investigations

Feb 05, 2008 | Kisiel R., Institute of Microelectronics and Optoelectronics; Bukat K. and Sitek J., Tele and Radio Research Institute; Gasior W., Moser Z. and Pstru_ J., Polish Academy of Sciences

This study investigates the technological properties of quaternary or quinary alloys made by addition Bi or Bi and Sb elements to the SnAgCu solders. The influence of added elements on the electrical and mechanical properties of solder joints created by these solders between PCB and electronic components were evaluated....

Publisher: Unipress - Institute of High Pressure Physics of the Polish Academy of Sciences

Unipress - Institute of High Pressure Physics of the Polish Academy of Sciences

The mission of Unipress is to use high pressure methods for advanced fundamental research and technology development. The main fields: Solid state physics, Optoelectronics, Sintering of nanocrystalline materials...

Warsaw, Poland

Other

Optimizing Thermal and Mechanical Performance in PCBs

Feb 04, 2008 | Alex Mangroli, Kris Vasoya

Engineers are always striving to make a lighter, faster and stronger PCB. In order to achieve their designs, engineers must turn to alternative materials to enhance their designs. There are many materials that allow for thermal, coefficient of thermal expansion (CTE) and rigidity. Many times if a material enables an engineer to have CTE they will have to sacrifice thermal. Currently carbon composite laminates are being used in order to achieve an ideal PCB with thermal, CTE and rigidity with almost no weight premiums....

Publisher: Stablcor

Stablcor

STABLCOR is an innovative Intellectual Property company that is dedicated to solving problems through design.

Costa Mesa, California, USA

Manufacturer

Selective Soldering Process

Jan 24, 2008 | Paul Bratt, Lead Package Engineer

Although many through-hole components are being replaced by their surface mount (SMT) counterparts, printed circuit boards (PCBs) are still being designed with both types of components. Often, there are interconnect hardware, displays, or other components that cannot withstand the exposure to the high temperature involved in the wave soldering process. They are generally soldered by hand. The challenge is to determine the optimal method manufacturers can use to solder these boards populated with mixed technology....

Publisher: Electronics Manufacturing Productivity Facility (EMPF)

Electronics Manufacturing Productivity Facility (EMPF)

The EMPF serves as a corporate residence of expertise in electronics manufacturing.

Philadelphia, Pennsylvania, USA

Other

Quieting the Noise: Quality Wave Soldering Depends on Control of Its Many Parameters.

Jan 24, 2008 | Gerjan Diepstraten, Senior Process Engineer, Vitronics Soltec BV

The wave solder process is characterized by a large number of process parameters. To understand them all and their interactions is challenging, particularly when it comes to lead-free soldering. Wave soldering has a number of sub-processes, which include fluxing, preheating, soldering and cooling....

Publisher: Vitronics Soltec

Vitronics Soltec

Global manufacturer of XPM Reflow Ovens, ZEVA Selective Soldering and Delta Wave Soldering Equipment.

Camdenton, Missouri, USA

Manufacturer

Process Development And Characterization Of The Stencil Printing Process For Small Apertures

Jan 16, 2008 | Dr. Daryl Santos, SUNY Binghamton; Dr. Rita Mohanty, Speedline Technologies

The consumer's interest for smaller, lighter and higher performance electronics products has increased the use of ultra fine pitch packages, such as Flip Chips and Chip Scale Packages, in printed circuit board (PCB) assembly. The assembly processes for these ultra fine pitch packages are extremely complex and each step in the assembly process influences the assembly yield and reliability....

Publisher: Speedline Technologies, Inc.

Speedline Technologies, Inc.

Speedline Technologies serves the electronics assembly and semiconductor packaging industries with class-leading equipment, responsive support and unparalleled process knowledge.

Franklin, Massachusetts, USA

Manufacturer

Lead-free Wave Soldering of Simple to Highly Complex Boards. Process Optimization

Jan 10, 2008 | Denis Barbini, Vitronics Soltec; Paul Wang, Microsoft; Peter Biocca, ITW Kester; Quyen Chu, Jabil

This research takes an in-depth look at the challenges encountered in developing a lead free wave soldering process based on the specific products as well as on specific materials. It attempts to provide the reader with the information necessary to make educated decisions in selecting materials and controlling various process parameters in order to execute a rational implementation strategy for a reliable and robust lead free wave soldering process....

Publisher: Vitronics Soltec

Vitronics Soltec

Global manufacturer of XPM Reflow Ovens, ZEVA Selective Soldering and Delta Wave Soldering Equipment.

Camdenton, Missouri, USA

Manufacturer

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