tailieunhanh - ELECTRONIC PACKAGING

Electronic packaging is a multidisciplinary process consisting of the physical design, product development,nmanufacture, and field support required to transform an electronic circuit into functional electronic equipment. | CHAPTER 16 ELECTRONIC PACKAGING Warren C. Fackler . Telesis Systems Inc. Cedar Rapids Iowa INTRODUCTION 339 Scope 339 Overview 340 Design Techniques 340 COMPONENT MOUNTING 341 General 341 Specific Components 341 Discrete Components 341 Printed Circuit Board Components 341 FASTENING AND JOINING 342 General 342 Mechanical Fastening 342 Welding and Soldering 343 Adhesives 344 INTERCONNECTION 344 General 344 Discrete Wiring 344 Board Level 344 Intramodule 344 Intermodule 344 Interequipment 344 Fiber-Optic Connections 344 MATERIALS SELECTION 345 General 345 Materials 345 Metals 345 Plastics and Adhesives 345 Ceramics and Glasses 345 Corrosion 345 SHOCK AND VIBRATION 345 General 345 Environmental Loads 345 Life 346 Shock 346 Vibration 346 Testing 347 STRUCTURAL DESIGN 347 General 347 Strength 347 Complexity 347 Degree of Enclosure 347 Thermal Expansion and Stresses 348 THERMAL DESIGN 348 General 348 Heat Transfer Modes 348 MANUFACTURABILITY 350 General 350 Assembly Considerations 350 Design to Process 350 Concurrent Engineering 350 PROTECTIVE PACKAGING 350 General 350 Storage Environment Protection 350 Shipping Environment Protection 351 INTRODUCTION Scope Electronic packaging is a multidisciplinary process consisting of the physical design product development manufacture and field support required to transform an electronic circuit into functional electronic equipment. The categories of technical knowledge and design emphasis applicable to a given electronic product vary significantly in priority depending on the intended product application . aerospace Mechanical Engineers Handbook 2nd ed. Edited