Description
FR-5
INSULATION BOARD
≥ 340 MPa
Flexural strength
perpendicular to laminations
≥ 33 KJ/m²
Charpy impact
strength parallel to laminations
≥ 35 Kv
Electric strength perpendicular to
laminations(at 90℃ in 25# transformer oil)
≥ 5*(10²*10²) MΩ
Insulation resistance
after immersion in water
94-V0 Level
Combustibility
30 mg
Water absorption
155 ℃
TG
FR-5 glass epoxy is similar to FR-4 but is designed for higher operating
temperatures. It is able to keep its insulating and mechanical properties up to
an operating temperature of 150 degrees Centigrade (FR-5). It maintains its
properties in dry and humid conditions. Because of its better glass transition
temperature coupled with its flame-retardant nature, FR-5 glass epoxy is often
the preferred material for automobile producers.
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