Epoxy Glass material offers very high mechanical strength coupled with excellent electrical properies and flame retardance. It can also be known as EP4, 4WEP, B38.
If UL is a requirement please contact us to ensure the correct grade is offered as only NP510A has UL references.
NP510A is a woven glass fabric combined with halogenated epoxy resin system. NP510A is produced to printed circuit board quality standards. It is flame retardant, meets UL-94 flammability classification V-0. NP510A meets the requirements of MIL-I-24768/27, Type GEE-F.
FR4 Technical Data |
(Thickness tested: 0.062", 0.125" & 0.5") |
| |
General Physical Properties | Units | Value |
| Specific Gravity | - | 1.85 |
| Rockwell Hardness (0.062") | M Scale | 98 |
| Moisture Absorption (0.062") | % | 0.1 |
Flexural Strength LW
(0.062") CW | Psi | 65,000
52,000 |
Tensile Strength LW
(0.125") CW | Psi | 40,000
32,000 |
Izod impact strength LW (E-48/50 - 0.500")
CW | ft-lb/in
notched | 7.9
7.3 |
| Compressive Strength flatwise (0.500") | Psi | 66,000 |
| Bonding Strength (0.500") | Lb | 2300 |
| Shear Strength (Perpendicular) | Psi | 21,500 |
| | | |
Thermal & Electrical Properties | Units | Value |
| Temperature Index (Electrical / Mechanical) | °C | 130 / 140* |
Coefficient of thermal expansion X-axis
(0.062") Y-axis | "/"/°Cx10-6 | 10.0
13.0 |
| Flammability Rating UL94 | Class | V-0 |
Breakdown Voltage Condition A
(0.062") D-48/50 | KV | 66
65 |
Electric Strength Condition A
(0.062") D-48/50 | V/mil | 800
750 |
| Permittivity (0.062") Condition D-24/23 | - | 4.8 |
| Dissipation Factor (0.062") Condition D-24/23 | - | 0.032 |
| Arc Resistance (0.125") D-495 | Sec | 130 |
| Comparative tracking index (0.125") D3638 | - | 300 |
| Tg | °C | 130 |
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