Cart (Loading....) | Create Account
Close category search window
 

Surface Topography of Printed Wiring Boards and Its Effect on Flashover

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)

Breakdown voltage values between conductor paths on epoxy-glass printed wiring boards (PWB's) are shown to lie on the Dakin curve relating the breakdown voltage with the dielectric constant and conductor separation on the insulator. However, the insulator surface roughness is shown to affect the breakdown voltage, the smoother the surface the lower the breakdown voltage. With a roughness (peak to valley) on the order of 10 µm or greater on epoxy-glass, the breakdown voltage approaches that of an equivalent air gap. Multiple filamentary discharges were observed per flash over similar to normal air breakdown. Erosion products from flashover include small copper spheres, from the damaged printed wiring lines, scattered around the damaged area on the PWB where, in many cases, the glass fiber supports were exposed. These effects can accelerate the degradation of the PWB insulator substrate.

Published in:

Components, Hybrids, and Manufacturing Technology, IEEE Transactions on  (Volume:5 ,  Issue: 1 )

Date of Publication:

Mar 1982

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.