TCBA founder, Harry Goldman and the TCBA logo

TCBA - Tesla Coil Builders Association

Devoted to the construction, operation and theoretical analysis of the Tesla coil

TCBA Volume 14 - Issue 1

Page 6 of 18

Computer Print-Out Sheet (1)

Jerry Gore

INFORMATION FOR BUILDING CAPACITORS:
MaterialDielectric strength
“K”
Puncture Voltage
per Mil
(0.001 inch)
Comments
Miscellaneous
Vacuum1.0
Paper, bond3.0200
Paper, Royal Grey3.0200
Paper, telephone, treated2.5 - 4200 - 250*
Paper, Parafin Coated2 -3.5
Paper, Kraft2.2
Oil, Castor4.67
Oil, Mineral, Squibb2.7200
Oil, Mineral2.2
Oil, Transformer2.1 - 2.575*
Rubber3.0
Rubber, Hard3.0160 - 500*
Rubber, Vulcanized3.2 - 3.91
Fibre5.0 - 7.5150 - 180
Fibre, Red5.0
Mica4.5 - 8.03800 - 5600
Mica, Ruby5.43800 - 5600
Quartz3.8 - 5.01000
Quartz (Fused)4.2150 - 200*
Shellac2.5 - 4.0200 - 400
Spar Varnish4.8 - 5.5
Steatite, low loss5.8150 - 315
Steatites (Magnesium silicate, etc.)5.5 - 7.5200 - 300
Cambric (Varnished)4.0 2
Alsimag196 5.7
Gutta Percha4.0 3
Amber3.0 - 7.0 4
Resin2.48 - 2.57
Enamel5.1450
Mycalex7.4250
Silicone RTV3.6550
Wood2.0 - 5.2
Wax (Parafin)2.1 - 2.5250 - 450*
Beeswax2.9 - 3.0
Slate7.0 5
Barium titanate(25 C)1200
Bariam titanate6000
Titanium dioxide125
Cellulose acetate3.3 - 3.9250 - 600
Casein, Moulded6.4 6
Polytetrafluorethylene2.0A
Aluminum oxide8.7
Tantalum pentoxide22
Glass
Glass4.8 - 10300
Plate Glass6.8 - 8.4
Pyrex Glass4.8 - 10335
Window Glass7.6 - 7.8200 - 250
Ceramics
Cordierite ceramics5.0 - 5.5100
Magnesium titanate ceramic12 - 18150
Porcelain5.1 - 7.540 - 280
Titanium dioxide ceramic70 - 90100
Titanium-zirconium dioxide ceramic40 - 60150
Plastics
Bakelite4.4 - 5.3300
Bakelite, Mica filled4.7325 - 375
Epoxy Circuit Board5.2700
Formica4.6 - 4.94507
Nylon (lowest values of 3 types)3.2407
PVC (rigid type)2.95725
Plexiglass2.8450 - 990
Polyethylene2.2 - 2.3450 - 1200
Polycarbonate (Lexan)2.96400
Polyethylene Terephthalate (Mylar)3.0 - 3.17500
Polystyrene2.5 - 2.6500 - 700
Teflon2.11000 - 2000

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