This unique book provides an up-to-date overview of the concepts behind lead-free soldering techniques. Readers will find a description of the physical and mechanical properties of lead-free solders, in addition to lead-free electronics and solder alloys. Additional topics covered include the reliability of lead-free soldering, tin whiskering and electromigration, in addition to emerging technologies and research.
This book highlights recent research progress in lead (Pb)-free solder technology, focusing on materials development, processing, and performances. It discusses various Pb-free solder materials’ development, encompassing composite solders, transient liquid phase sintering, and alloying. The book also details various Pb-free solder technology processing and performances, including flux modification for soldering, laser soldering, wave soldering, and reflow soldering, while also examining multiple technologies pertaining to the rigid and flexible printed circuit board (PCB). Some chapters explain the materials characterization and modeling techniques using computational fluid dynamics (CFD). This book serves as a valuable reference for researchers, industries, and stakeholders in advanced microelectronic packaging, emerging interconnection technology, and those working on Pb-free solder.
This book focuses on the assembly and reliability of lead-free solder joints. Both the principles and engineering practice are addressed, with more weight placed on the latter. This is achieved by providing in-depth studies on a number of major topics such as solder joints in conventional and advanced packaging components, commonly used lead-free materials, soldering processes, advanced specialty flux designs, characterization of lead-free solder joints, reliability testing and data analyses, design for reliability, and failure analyses for lead-free solder joints. Uniquely, the content not only addresses electronic manufacturing services (EMS) on the second-level interconnects, but also packaging assembly on the first-level interconnects and the semiconductor back-end on the 3D IC integration interconnects. Thus, the book offers an indispensable resource for the complete food chain of electronics products.
Covering the major topics in lead-free soldering Lead-free Soldering Process Development and Reliability provides a comprehensive discussion of all modern topics in lead-free soldering. Perfect for process, quality, failure analysis and reliability engineers in production industries, this reference will help practitioners address issues in research, development and production. Among other topics, the book addresses: · Developments in process engineering (SMT, Wave, Rework, Paste Technology) · Low temperature, high temperature and high reliability alloys · Intermetallic compounds · PCB surface finishes and laminates · Underfills, encapsulants and conformal coatings · Reliability assessments In a regulatory environment that includes the adoption of mandatory lead-free requirements in a variety of countries, the book’s explanations of high-temperature, low-temperature, and high-reliability lead-free alloys in terms of process and reliability implications are invaluable to working engineers. Lead-free Soldering takes a forward-looking approach, with an eye towards developments likely to impact the industry in the coming years. These will include the introduction of lead-free requirements in high-reliability electronics products in the medical, automotive, and defense industries. The book provides practitioners in these and other segments of the industry with guidelines and information to help comply with these requirements.
This book presents the scientific principles, processing conditions, probable failure mechanisms, and a description of reliability performance and equipment required for implementing high-temperature and lead-free die attach materials. In particular, it addresses the use of solder alloys, silver and copper sintering, and transient liquid-phase sintering. While different solder alloys have been used widely in the microelectronics industry, the implementation of sintering silver and transient liquid-phase sintering remains limited to a handful of companies. Hence, the book devotes many chapters to sintering technologies, while simultaneously providing only a cursory coverage of the more widespread techniques employing solder alloys. Addresses the differences between sintering and soldering (the current die-attach technologies), thereby comprehensively addressing principles, methods, and performance of these high-temperature die-attach materials; Emphasizes the industrial perspective, with chapters written by engineers who have hands-on experience using these technologies; Baker Hughes, Bosch and ON Semiconductor, are represented as well as materials suppliers such as Indium; Simultaneously provides the detailed science underlying these technologies by leading academic researchers in the field.
A fully updated, comprehensive guide to electronic packaging technologies This thoroughly revised resource offers rigorous and complete coverage of microsystems packaging at both the device and system level. You will get in-depth guidance on the latest technologies from academic and industry leaders. New chapters cover topics highly relevant to today's small and ultra-small systems. Fundamentals of Microsystems Packaging, Second Edition, discusses the entire field, from wafer to systems, and clearly explains every major contributing technology. The book details emerging systems, including smart wearables, the Internet of Things, bioelectronics for medical applications, cloud computing, and much more. Microelectronics, photonics, MEMS, sensors, RF, and wireless technologies are fully covered. • Covers the electrical, mechanical, chemical, and materials aspects of each technology • Contains examples of all common configurations and technologies • Written by the leading author in the field
Various factors affect the performance of electrical contacts, including tribological, mechanical, electrical, and materials aspects. Although these behaviors have been studied for many years, they are not widely used or understood in practice. Combining approaches used across the globe, Electrical Contacts: Fundamentals, Applications, and Technology integrates advances in research and development in the tribological, material, and analytical aspects of electrical contacts with new data on electrical current transfer at the micro- and nanoscales. Taking an application-oriented approach, the authors illustrate how material characteristics, tribological behavior, and loading impact the degradation of contacts, formation of intermetallics, and overall reliability and performance. Coverage is divided broadly into three sections, with the first focused on mechanics, tribology, materials, current and heat transfer, and basic reliability issues of electrical contacts. The next section explores applications, such as power connections, electronic connections, and sliding contacts, while the final section presents the diagnostic and monitoring techniques used to investigate and measure phenomena occurring at electrical contact interfaces. Numerous references to current literature reflect the fact that this book is the most comprehensive survey in the field. Explore an impressive collection of data, theory, and practical applications in Electrical Contacts: Fundamentals, Applications, and Technology, a critical tool for anyone investigating or designing electrical equipment with improved performance and reliability in mind.
This book presents peer reviewed articles from the Green Materials and Electronic Packaging Interconnect Technology Symposium, (EPITS 2022), held in Langkawi, Malaysia on 14th and 15th of Sept, 2022. It brings together packaging experts to share and exchange ideas in electronics technology. Topics covered in this volume include, but are not limited to; (1) Green materials and technology, (2) Emerging interconnect materials and technologies,(3) Non-solder interconnect materials at chip and package levels, (4) Fundamental materials behavior for electronic packaging materials, (5) Advanced characterization methods as applied to electronic packaging technology, (6) Developments in high temperature Pb-free solders and associated interconnects for automotive and power electronics, (7) Surface coating materials & (8) Advanced materials.
Lead-free Electronics provides guidance on the design and use of lead-free electronics as well as technical and legislative perspectives. All the complex challenges confronting the elec-tronics industry are skillfully addressed: * Complying with state legislation * Implementing the transition to lead-free electronics, including anticipating associated costs and potential supply chain issues * Understanding intellectual property issues in lead-free alloys and their applications, including licensing and infringement * Implementing cost effective manufacturing and testing * Reducing risks due to tin whiskers * Finding lead-free solutions in harsh environments such as in the automotive and telecommunications industries * Understanding the capabilities and limitations of conductive adhesives in lead-free interconnects * Devising solutions for lead-free, flip-chip interconnects in high-performance integrated circuit products Each chapter is written by leading experts in the field and carefully edited to ensure a consistent approach. Readers will find all the latest information, including the most recent data on cyclic thermomechanical deformation properties of lead-free SnAgCu alloys and a comparison of the properties of standard Sn-Pb versus lead-free alloys, using the energy partitioning approach. With legislative and market pressure to eliminate the use of lead in electronics manufacturing, this timely publication is essential reading for all engineers and professionals in the electronics industry.
