TCBA Volume 14 - Issue 1
Page 6 of 18
Computer Print-Out Sheet (1)
Jerry Gore
| INFORMATION FOR BUILDING CAPACITORS: | |||
|---|---|---|---|
| Material | Dielectric strength âKâ | Puncture Voltage per Mil (0.001 inch) | Comments |
| Miscellaneous | |||
| Vacuum | 1.0 | ||
| Paper, bond | 3.0 | 200 | |
| Paper, Royal Grey | 3.0 | 200 | |
| Paper, telephone, treated | 2.5 - 4 | 200 - 250 | * |
| Paper, Parafin Coated | 2 -3.5 | ||
| Paper, Kraft | 2.2 | ||
| Oil, Castor | 4.67 | ||
| Oil, Mineral, Squibb | 2.7 | 200 | |
| Oil, Mineral | 2.2 | ||
| Oil, Transformer | 2.1 - 2.5 | 75 | * |
| Rubber | 3.0 | ||
| Rubber, Hard | 3.0 | 160 - 500 | * |
| Rubber, Vulcanized | 3.2 - 3.9 | 1 | |
| Fibre | 5.0 - 7.5 | 150 - 180 | |
| Fibre, Red | 5.0 | ||
| Mica | 4.5 - 8.0 | 3800 - 5600 | |
| Mica, Ruby | 5.4 | 3800 - 5600 | |
| Quartz | 3.8 - 5.0 | 1000 | |
| Quartz (Fused) | 4.2 | 150 - 200 | * |
| Shellac | 2.5 - 4.0 | 200 - 400 | |
| Spar Varnish | 4.8 - 5.5 | ||
| Steatite, low loss | 5.8 | 150 - 315 | |
| Steatites (Magnesium silicate, etc.) | 5.5 - 7.5 | 200 - 300 | |
| Cambric (Varnished) | 4.0 2 | ||
| Alsimag | 196 5.7 | ||
| Gutta Percha | 4.0 3 | ||
| Amber | 3.0 - 7.0 4 | ||
| Resin | 2.48 - 2.57 | ||
| Enamel | 5.1 | 450 | |
| Mycalex | 7.4 | 250 | |
| Silicone RTV | 3.6 | 550 | |
| Wood | 2.0 - 5.2 | ||
| Wax (Parafin) | 2.1 - 2.5 | 250 - 450 | * |
| Beeswax | 2.9 - 3.0 | ||
| Slate | 7.0 5 | ||
| Barium titanate(25 C) | 1200 | ||
| Bariam titanate | 6000 | ||
| Titanium dioxide | 125 | ||
| Cellulose acetate | 3.3 - 3.9 | 250 - 600 | |
| Casein, Moulded | 6.4 6 | ||
| Polytetrafluorethylene | 2.0 | A | |
| Aluminum oxide | 8.7 | ||
| Tantalum pentoxide | 22 | ||
| Glass | |||
| Glass | 4.8 - 10 | 300 | |
| Plate Glass | 6.8 - 8.4 | ||
| Pyrex Glass | 4.8 - 10 | 335 | |
| Window Glass | 7.6 - 7.8 | 200 - 250 | |
| Ceramics | |||
| Cordierite ceramics | 5.0 - 5.5 | 100 | |
| Magnesium titanate ceramic | 12 - 18 | 150 | |
| Porcelain | 5.1 - 7.5 | 40 - 280 | |
| Titanium dioxide ceramic | 70 - 90 | 100 | |
| Titanium-zirconium dioxide ceramic | 40 - 60 | 150 | |
| Plastics | |||
| Bakelite | 4.4 - 5.3 | 300 | |
| Bakelite, Mica filled | 4.7 | 325 - 375 | |
| Epoxy Circuit Board | 5.2 | 700 | |
| Formica | 4.6 - 4.9 | 450 | 7 |
| Nylon (lowest values of 3 types) | 3.2 | 407 | |
| PVC (rigid type) | 2.95 | 725 | |
| Plexiglass | 2.8 | 450 - 990 | |
| Polyethylene | 2.2 - 2.3 | 450 - 1200 | |
| Polycarbonate (Lexan) | 2.96 | 400 | |
| Polyethylene Terephthalate (Mylar) | 3.0 - 3.1 | 7500 | |
| Polystyrene | 2.5 - 2.6 | 500 - 700 | |
| Teflon | 2.1 | 1000 - 2000 | |