Cosmo Corporation
7/8 x 7/8 in. Glass Filled Nylon 6/6 Coil Bobbin.
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Bobbin
Injection molded Nylon 6/6 with the addition of 30%-35% glass fibers. The addition of glass fibers allows a higher heat deflection temperature and it brings the material to a class HB UL temperature classification..
Core
These bobbins are design for use with an E-I core material.
Termination
Transformer bobbins without terminals require soldering of lead wires directly to the magnet wire using a secondary means of strain relief..
Mounting
Transformer with these types of bobbins may require mounting hardware, such as channel/frame, brackets, or end cover.
Specifications
| Material |
Glass filled nylon 6/6 |
| Filled percentage |
30%-35% |
| Type | Thermoplastic |
| Core Type | "E-I" |
| Core size |
EI-87, EI-7/8 (0.875 in.) |
| Core stack height | 7/8 in. |
| Weight | 0.25 oz. |
| Compliance | RoHS & REACH |
| Dimensional Drawing | 20000-B087-087-00 |
Material Characteristics
| Physical | ASTM Test Method | Nylon 6/6 (30% Glass Filled) |
| Density (lb/in^3) | D-792 | 0.049 |
| Specific gravity | D-792 | 1.38 |
| Water absorption, %, 24 hrs. | D-570 | 0.7 |
| Water saturation, % | D-570 | 5.4 |
| Mechanical | ||
| Tensile strength, psi x 103 | D-638 | 27/18 |
| Tensile modulus, psi x 105 | D-638 | 14 |
| Elongation, % | D-638 | 3/4 |
| Flexural Strength, psi x 103 | D-790 | 38 |
| Flexural Modulus, psi x 105 | D-790 | 12 |
| Compressive strength, psi x 103 | D-638 | 42 |
| *Notched izod impact, ft-lbs/in. | D-256 | 2.2/2.5 |
| Rockwell hardness | D-785 | M101 |
| Thermal | ||
| Thermal expansion, in/in/°C x 10-5 | D-696 | 2.3 |
| Heat distortion, ºF, 264 psi | D-696 | 480 |
| Heat distortion, ºF, 66 psi | D-696 | 500 |
| Melting Point, °F | D-3418 | 491 |
| Continuous operating temp, °F | - | 230 |
| Flammability | ||
| Flammability rating | UL-94 | HB |
| Hot wire ignition, seconds | UL-746 | 9 |
| Electrical | ||
| Dielectric strength, v/mil. 0.125 in. thick | D-149 | 530 |
| Volume resistivity, ohm-cm | D-257 | 1015/109 |
| Dielectric constant, 100 Hz | D-150 | 4.5/25 |
| Arc resistance, seconds | D-2873 | 24 |
NOTE: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers' complete material property datasheets. All values are dry as molded / 50% relative humidity and 73°F (23°C) unless otherwise noted.