- A complete guide for the electronics industry to adhesive types, their properties and applications - this book is an essential reference for a wide range of specialists including electrical engineers, adhesion chemists and other engineering professionals.
- Provides specifications of adhesives for particular uses and outlines the processes for application and curing - coverage that is of particular benefit to design engineers, who are charged with creating the interface between the adhesive material and the microelectronic device.
- Discusses the respective advantages and limitations of different adhesives for a varying applications, thereby addressing reliability issues before they occur and offering useful information to both design engineers and Quality Assurance personnel.
Adhesives are widely used in the manufacture and assembly of electronic circuits and products. Generally, electronics design engineers and manufacturing engineers are not well versed in adhesives, while adhesion chemists have a limited knowledge of electronics. This book bridges these knowledge gaps and is useful to both groups.
The book includes chapters covering types of adhesive, the chemistry on which they are based, and their properties, applications, processes, specifications, and reliability. Coverage of toxicity, environmental impacts and the regulatory framework make this book particularly important for engineers and managers alike.
The third edition has been updated throughout and includes new sections on nanomaterials, environmental impacts and new environmentally friendly ‘green’ adhesives. Information about regulations and compliance has been brought fully up-to-date.
As well as providing full coverage of standard adhesive types, Licari explores the most recent developments in fields such as:
• Tamper-proof adhesives for electronic security devices.
• Bio-compatible adhesives for implantable medical devices.
• Electrically conductive adhesives to replace toxic tin-lead solders in printed circuit assembly - as required by regulatory regimes, e.g. the EU’s Restriction of Hazardous Substances Directive or RoHS (compliance is required for all products placed on the European market).
• Nano-fillers in adhesives, used to increase the thermal conductivity of current adhesives for cooling electronic devices.
Electronics and materials engineers in the automotive, medical, semiconductors, space, plastics, and military industries.
"I recommend this book without reservation to everyone in electronics who must understand adhesives, or make decisions about adhesives, or both." - George Riley
1.1 Adhesives Types and Definitions
1.2 Summary of Packaging Technologies
1.3 History of Adhesives in Electronic Applications
1.4 Comparison of Polymer Adhesives with Metallurgical and Vitreous Attachment Materials
1.6 The Market
2. Functions and Theory of Adhesives
2.1 Mechanical Attachment
2.2 Electrical Connections
2.3 Thermal Dissipation
2.4 Stress Dissipation
3. Chemistry, Formulation, and Properties of Adhesives
3.2 Formulation of Adhesives
4. Adhesive Bonding Properties
4.2 Surface Treatments
4.3 Adhesive Dispensing
4.4 Placement of Devices and Components
5.1 General Applications
5.2 Specific Applications
6.1 Failure Modes and Mechanisms
7. Test and Inspection Methods
7.1 Physical Tests
7.2 Electrical Tests
7.3 Environmental Tests
7.4 Thermal Tests
7.5 Mechanical and Thermomechanical Tests
7.6 Chemical Analysis
Abbreviations and Acronyms
James J. Licari
AvanTeco, Whittier, CA, USA
has his own consulting firm, AvanTeco, specializing in materials and processes for electronics. He holds a BS in Chemistry from Fordham University and a PhD in Chemistry from Princeton University, where he was a DuPont Senior Fellow. His areas of expertise include materials and processes for electronic applications, primarily for high reliability systems, hybrid microcircuits, printed wiring circuits, and other interconnect packaging technologies. He is an expert on polymeric materials including adhesives, coatings, encapsulants, insulation, reliability based on failure modes and mechanisms. Dr. Licari has had a forty-year career dedicated to the study and advancement of microelectronic materials and processes. Notable achievements throughout this career include conducting the first studies on the reliability and use of die-attach adhesives for microcircuits, which he did in the mid-1970s through the early 1980s, making industry and the government aware of the degrading effects of trace amounts of ionic contaminants in epoxy resins. He conducted early exploratory development on the use of non-noble metal (Cu) thick-film conductor pastes for thick-film ceramic circuits. He carried out the first studies on the use of Parylene as a dielectric and passivation coating for MOS devices and as a particle immobilizer for hybrid microcircuits. He developed the first photo-definable thick-film conductor and resistor pastes that were the forerunners of DuPont’s Fodel process, for which he received a patent was granted in England. And he developed the first photocurable epoxy coating using cationic photoinitiation by employing a diazonium salt as the catalytic agent (U.S. 3205157) . The work was referenced as pioneering work in a review article by J.V. Crivello “The Discovery ad Development of Onium Salt Cationic Photoinitiators,” J. Polymer Chemistry (1999)
Dale W. Swanson has over 29 years experience in Materials and process engineering