China Epgc202/Fr4 of Epoxy Sheet, Find details about China Epoxy Epgc202 Sheet, Fr4 Sheet from Epgc202/Fr4 of Epoxy Sheet
ITEMS | Unit | 3240 | NEMA G10 | NEMAFR4 | NEMA G11 | NEMA FR5 | ||
Thermal endurance | -- | ºC | 130 ( B) | 130 ( B) | 130 ( B) | 155 ( F) | 155 ( F) | |
Martin's Temp ( perpendicular ) | ≥ | ºC | 200 | 200 | 200 | 175 | 260 | |
Specific weight @ 20 ºC | g/cm 3 | 1.70 - 1.90 | 1.70 - 1.90 | 1.80 --20 | 1.70-1.90 | 1.70-1.90 | ||
Water absorption for 24 h | mg | 1.2 mm- 18 | 1.5mm-- 19 | 1.0mm-- 18 | 1.5mm-- 19 | 1.2 mm- 18 | ||
Flexural strength (perpendicular) | 23±2ºC | ≥ | MPa | 340 | 340 | 340 | 340 | 340 |
155ºC | ≥ | 170 | 170 | 170 | 170 | 170 | ||
Impact strength (Charpy) | ≥ | KJ/m 2 | 33 | 33 | 33 | 33 | 33 | |
Impact strength (Izod) | ≥ | KJ/m 2 | 34 | 34 | 34 | 34 | 34 | |
Electrical strength, ≤3.0 mm | ≥ | KV/mm | 10.2 | 10.2 | 10.2 | 10.2 | 10.2 | |
Breakdown voltage, > 3.0mm | ≥ | KV | 35 | 40 | 40 | 40 | 40 | |
Insulating resistances | ≥ | W | 5.0 X 10 8 | 5.0 X 10 8 | 5.0 X 10 8 | 5.0 X 10 8 | 5.0 X 10 8 | |
Flammability | -- | -- | -- | UL 94 V0 | -- | UL 94 V0 |