(Micarta) (High Pressure Laminates) G10/FR4 Glass Reinforced Epoxy - natural(yellowish
to light green) Technical Data SheetChemical
Resistance Chart
The most versatile all-around laminate and composite, this grade is a continuous glass woven
fabric base impregnated with an epoxy resin binder. It has extremely high
mechanical strength, good dielectric loss properties, and good electric strength
properties, both wet and dry. NEMA grades G10 and FR4 Glass-Cloth
Reinforced Epoxy -- natural color is typically a yellowish to light green. The
most versatile all-around laminate grades are continuous glass woven fabric
impregnated with an epoxy resin binder. (Epoxy resins are among the most
versatile and widely used plastics in the electronics field, primarily because
water absorption is virtually nil, rendering it an outstanding insulator. Beyond
its electrical insulating properties, epoxy resins exhibit superior adhesive
properties and great dimensional stability -- shrinkage is usually less than 1
percent.) G10/FR4 has extremely high mechanical strength, good dielectric loss
properties, and good electric strength properties, both wet and dry. The main
difference between NEMA Grades G10 and FR4 is that FR4 is a fire retardant grade
of G10. Therefore, FR4 can be safely substituted where G10 is called for, while
G10 can never be substituted where FR4 is called for. NEMA grades G11 and
FR5 Glass-Cloth Reinforced Epoxy -- natural color is typically yellow green to
amber. This grade is similar to G10/FR4 with the addition of a higher operating
temperature and some improved mechanical strength at elevated temperatures
NEMA G-10 certs to MIL-I-24768/2
GEE, IPC 4101/20, IEC 60893-3 Type 2 EP GC 201
NEMA FR-4 certs to MIL-I-24768/27 GEE-F, IPC 4101/21, IEC 60893-3 Type 2 EP GC
202
