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【文件名】:06120@52RD_Flexible Circuit Design Manual.pdf
【格　式】:pdf
【大　小】:2245K
【简　介】:
【目　录】:



FLEXIBLE CIRCUIT DESIGN MANUAL
TABLE OF CONTENTS
PART 1: INTRODUCTION
CHAPTER 1. Introduction To Flexible Circuits ....................................1-1
Applications...........................................................................................................1-2
Benefits & Limitations ...........................................................................................1-4
Manufacturing Processes.......................................................................................1-5
CHAPTER 2. Circuit Configurations ........................................................2-1
Single-Sided Flexible Circuit .................................................................................2-1
Double-Sided Flexible Circuit................................................................................2-2
Multilayer & Rigid-Flex Circuit.............................................................................2-3
CHAPTER 3. Materials .................................................................................3-1
Dielectrics .............................................................................................................3-1
Conductors ............................................................................................................3-2
Adhesives...............................................................................................................3-3
Adhesiveless Laminates..........................................................................................3-5
Non-Conductive Coatings ......................................................................................3-5
Conductive Coatings..............................................................................................3-6
Chemical Treatments (Organic Coatings) ..............................................................3-9
Stiffeners ...............................................................................................................3-9
PART 2: DESIGN CONSIDERATIONS
CHAPTER 4. Implementing Flex ................................................................4-1
Preliminary Design Approach................................................................................4-1
CHAPTER 5. Cost-Efficient Design Alternatives ...................................5-1
Choice of Material.................................................................................................5-1
Design Configuration ............................................................................................5-4
Tooling ..................................................................................................................5-5
CHAPTER 6. Electrical Design Considerations ......................................6-1
Conductor Thickness & Width................................................................................6-1
Conductor Spacing ................................................................................................6-4
Shielding................................................................................................................6-5
Distributed Capacitance ........................................................................................6-5
Characteristic Impedance ......................................................................................6-9
CHAPTER 7. Mechanical Design Considerations...................................7-1
Flexing ..................................................................................................................7-1
Bends & Folds .......................................................................................................7-2
Tear Prevention .....................................................................................................7-3
Through-Holes.......................................................................................................7-5
Vibration & Shocks ................................................................................................7-6
Covercoat Openings ..............................................................................................7-6
Perimeter...............................................................................................................7-7
Assembly................................................................................................................7-8
CHAPTER 8. Artwork Design Considerations ........................................8-1
Conductor Width & Spacing ..................................................................................8-1
Conductor Routing ................................................................................................8-1
Pad Construction for Non-Plated and Plated Holes ...............................................8-3
Annular Ring .........................................................................................................8-5
Assembly................................................................................................................8-6
Circuit Markings....................................................................................................8-6
PART 3: QUALITY ISSUES
CHAPTER 9. Testing & Inspection ............................................................9-1
Quality Control......................................................................................................9-1
Quality Assurance & Inspection.............................................................................9-2
CHAPTER 10. Standards And Specifications ....................................... 10-1
Industry Specifications......................................................................................... 10-1
Federal & Military Specifications ........................................................................ 10-2
Commercial Specifications................................................................................... 10-3
APPENDICES ...................................................................................................... A-1
A. Table of M-Flex Tooling Tolerances................................................................ A-1
B. Selected Bibliography...................................................................................... A-2

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