Re: Dielectric Constants and Breakdown Voltages (fwd)

To: "'Tesla List'" <tesla-at-poodle.pupman-dot-com>
Subject: Re: Dielectric Constants and Breakdown Voltages (fwd)
From: Tesla List <tesla-at-stic-dot-net>
Date: Sun, 9 Nov 1997 23:24:22 -0600
Approved: tesla-at-stic-dot-net


From: 	Tesla List Owner[SMTP:listown-at-pupman-dot-com]
Sent: 	Sunday, November 09, 1997 2:41 PM
To: 	tesla-at-stic-dot-net
Subject: 	Dielectric Constants and Breakdown Voltages (fwd)



---------- Forwarded message ----------
Date: Fri, 7 Nov 1997 19:32:37 -0700
From: Ken & Pat Prentice <prentice-at-sympatico.ca>
To: tesla-at-pupman-dot-com
Subject: Dielectric Constants and Breakdown Voltages

Good day Ladies and Gentlemen

     I'm new and have been lurking for some time.. and thought that this might help as a quick reference... I found this in one of the old electronic mags.  (set your font Courier to see this properly)

   INSULATOR              DIE..CONST.    PUNCTURE VOLTS/0.001 inch
==================================================================
Air.................................1.0.........  30
Window Glass........................7.8......... 200
Polyethylene........................2.3......... 450
Paper (bond)........................3.0......... 200
Polycarbonate (Lexan)...............2.9......... 400
Teflon..............................2.1.........1000
Polystyrene.........................2.6......... 500
Epoxy Circuit board.................5.2......... 700
Pyrex................................4.8......... 335
Plexiglas...........................2.8......... 450
PVC (rigid type)....................2.9......... 725
Silicone RTV........................3.6......... 550
Polyethylene Terphthalate (Mylar)...3.0.........7500
Nylon...............................3.2......... 407
Mineral Oil, Squibb.................2.7......... 200
Shellac.............................3.3......... 200

All measured at 1 MHz