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PCB Trace Current/Temperature Curves 0. 25 Oz. to 5. 0 Oz

2018-07-09
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Release : 2018-07-09
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Kind : eBook
Book Rating : 796/5 ( reviews)

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Book Synopsis PCB Trace Current/Temperature Curves 0. 25 Oz. to 5. 0 Oz by : Douglas Brooks

Download or read book PCB Trace Current/Temperature Curves 0. 25 Oz. to 5. 0 Oz written by Douglas Brooks. This book was released on 2018-07-09. Available in PDF, EPUB and Kindle. Book excerpt: Brooks has been looking at these relationships since the mid '90s, and entered into a multi-year collaboration with Johannes Adam in 2014. And he has assembled 27-plus years of knowledge into these pages. Detailed PCB trace current/temperature charts cover 7 trace thicknesses and 11 trace widths: 1/4, 1/2, 1.0, 2.0, 3.0, 4.0, and 5.0 Oz trace thicknesses and 15, 25, 50, 80, 100, 150, 200, 250, 300, 400, and 500 mil trace widths. The text summarizes the factors that influence trace heating (i^2R) and trace cooling (thermal conductivity through the dielectric, convection, and radiation.) Internal traces are cooler than external traces because the thermal conductivity through the dielectric is more efficient. The change between internal and external temperatures increases as the external temperature increases, and also as the trace depth increases. Guidelines are provided to help estimate an internal trace temperature based on what the external temperature is/would be and the relative depth of the trace. The charts are based on the work Brooks and Adam did in their recent book, "PCB Trace and Via Temperatures: The Complete Analysis," 2nd Edition, 2017 (available on Amazon.com) and on subsequent modeling using Dr. Adam's simulation software Thermal Risk Management (TRM). Table of Contents 1.0 Introduction and Background 2.0 Description 2.1 Factors Leading to Heating 2.2 Factors Leading to Cooling 2.3 How Hot Is Too Hot? 3.0 Internal Traces 4.0 Accuracy 4.1 How Do We Measure Trace Temperature 4.2 Estimate Accuracy 5.0 Current Temperature Charts Notes and References Appendices

Complete PCB Design Using OrCAD Capture and PCB Editor

2019-06-20 Technology & Engineering
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Release : 2019-06-20
Genre : Technology & Engineering
Kind : eBook
Book Rating : 857/5 ( reviews)

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Book Synopsis Complete PCB Design Using OrCAD Capture and PCB Editor by : Kraig Mitzner

Download or read book Complete PCB Design Using OrCAD Capture and PCB Editor written by Kraig Mitzner. This book was released on 2019-06-20. Available in PDF, EPUB and Kindle. Book excerpt: Complete PCB Design Using OrCAD Capture and PCB Editor, Second Edition, provides practical instruction on how to use the OrCAD design suite to design and manufacture printed circuit boards. Chapters cover how to Design a PCB using OrCAD Capture and OrCAD Layout, adding PSpice simulation capabilities to a design, how to develop custom schematic parts, how to create footprints and PSpice models, and how to perform documentation, simulation and board fabrication from the same schematic design. This book is suitable for both beginners and experienced designers, providing basic principles and the program's full capabilities for optimizing designs. Presents a fully updated edition on OrCAD Capture, Version 17.2 Combines the theoretical and practical parts of PCB design Includes real-life design examples that show how and why designs work, providing a comprehensive toolset for understanding OrCAD software Provides the exact order in which a circuit and PCB are designed Introduces the IPC, JEDEC and IEEE standards relating to PCB design

Complete PCB Design Using OrCad Capture and Layout

2011-04-01 Technology & Engineering
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Release : 2011-04-01
Genre : Technology & Engineering
Kind : eBook
Book Rating : 209/5 ( reviews)

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Book Synopsis Complete PCB Design Using OrCad Capture and Layout by : Kraig Mitzner

Download or read book Complete PCB Design Using OrCad Capture and Layout written by Kraig Mitzner. This book was released on 2011-04-01. Available in PDF, EPUB and Kindle. Book excerpt: Complete PCB Design Using OrCad Capture and Layout provides instruction on how to use the OrCAD design suite to design and manufacture printed circuit boards. The book is written for both students and practicing engineers who need a quick tutorial on how to use the software and who need in-depth knowledge of the capabilities and limitations of the software package. There are two goals the book aims to reach: The primary goal is to show the reader how to design a PCB using OrCAD Capture and OrCAD Layout. Capture is used to build the schematic diagram of the circuit, and Layout is used to design the circuit board so that it can be manufactured. The secondary goal is to show the reader how to add PSpice simulation capabilities to the design, and how to develop custom schematic parts, footprints and PSpice models. Often times separate designs are produced for documentation, simulation and board fabrication. This book shows how to perform all three functions from the same schematic design. This approach saves time and money and ensures continuity between the design and the manufactured product. Information is presented in the exact order a circuit and PCB are designed Straightforward, realistic examples present the how and why the designs work, providing a comprehensive toolset for understanding the OrCAD software Introduction to the IPC, JEDEC, and IEEE standards relating to PCB design Full-color interior and extensive illustrations allow readers to learn features of the product in the most realistic manner possible

Switch Engineering Handbook

1993 Technology & Engineering
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Author :
Release : 1993
Genre : Technology & Engineering
Kind : eBook
Book Rating : /5 ( reviews)

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Book Synopsis Switch Engineering Handbook by : John Robert Mason

Download or read book Switch Engineering Handbook written by John Robert Mason. This book was released on 1993. Available in PDF, EPUB and Kindle. Book excerpt: Very Good,No Highlights or Markup,all pages are intact.

PCB Design Guide to Via and Trace Currents and Temperatures

2021-02-28 Technology & Engineering
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Release : 2021-02-28
Genre : Technology & Engineering
Kind : eBook
Book Rating : 615/5 ( reviews)

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Book Synopsis PCB Design Guide to Via and Trace Currents and Temperatures by : Douglas Brooks

Download or read book PCB Design Guide to Via and Trace Currents and Temperatures written by Douglas Brooks. This book was released on 2021-02-28. Available in PDF, EPUB and Kindle. Book excerpt: A very important part of printed circuit board (PCB) design involves sizing traces and vias to carry the required current. This exciting new book will explore how hot traces and vias should be and what board, circuit, design, and environmental parameters are the most important. PCB materials (copper and dielectrics) and the role they play in the heating and cooling of traces are covered. The IPC curves found in IPC 2152, the equations that fit those curves and computer simulations that fit those curves and equations are detailed. Sensitivity analyses that show what happens when environments are varied, including adjacent traces and planes, changing trace lengths, and thermal gradients are presented. Via temperatures and what determines them are explored, along with fusing issues and what happens when traces are overloaded. Voltage drops across traces and vias, the thermal effects going around right-angle corners, and frequency effects are covered. Readers learn how to measure the thermal conductivity of dielectrics and how to measure the resistivity of copper traces and why many prior attempts to do so have been doomed to failure. Industrial CT Scanning, and whether or not they might replace microsections for measuring trace parameters are also considered.

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