Phenolic Products

G10/FR4 Glass Reinforced Epoxy - Naturally yellow to light green
The most versatile all-around high pressure composite laminate, NEMA grades G10 and FR4 are 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 zero, rendering it an outstanding insulator. Epoxy resins also 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.

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

G11/FR5 Glass Reinforced Epoxy - Naturally 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. 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 G-11 certs to MIL-I-24768/3 GEB, IEC 60893-3 Type 2 EP GC 203; FR5 certifies to Mil-I-24768/28 GEB-F.

G5/G9 Glass Reinforced Melamine - Naturally gray to brown
Glass-Cloth-Reinforced Melamine (G5 and G9) is composed of a continuous glass woven cloth base impregnated with a melamine resin binder. Melamine resins are the hardest, most rigid and abrasion-resistant of the standard resins employed in the production of industrial laminates. However, prolonged exposure to high temperature can adversely affect its mechanical and electrical strength properties. Arc resistance, however, may remain unaffected despite excessive thermal exposure. G5 and G9 is also caustic resistant. G9 is more resistant to the elements of the environment. Therefore, G9 can be safely substituted where G5 is called for.

NEMA G-5 certs to MIL-I-24768/8 GMG , IEC 60893-3 Type 3 MF GC 201
NEMA G-9 certs to MIL-I-24768/1 GME, IEC 60893-3 Type 3 MF GC 201

G7 Glass Reinforced Silicone - Naturally cream to white

Composed of a continuous glass woven cloth base impregnated with a silicone resin binder, this grade has excellent heat and arc resistance. Silicone is used for high temperature electronic applications demanding low electrical losses. Silicone isn't as strong as epoxies and phenolics upon aging at lower temperatures but is stronger upon aging over 400°F. G7 has excellent dielectric loss properties under dry conditions, and decent electrical properties under humid conditions albeit a high percentage of change.

NEMA G-7 certs to MIL-I-24768/17 GSG, IEC 60893-3 Type 6 SI GC 201

X/XX/XXX Paper Reinforced Phenolic - Naturally tan to brown

NEMA grades X, XX and XXX are composed of a paper base impregnated with a phenolic resin binder. These grades are among the lowest in cost and easiest to process. Phenolics are adequate for dry electrical applications with low mechanical stress. Paper phenolic generally does not compete with epoxies in resistance to moisture, humidity, mechanical strength, dimensional stability, shrinkage and retention of electrical properties in extreme environments. Still, paper phenolic meets the same electrical expectations under the same high temperatures as G10.

NEMA X certs to MIL-I-24768/12 PBM, IEC 60893-3 Type 4 PF CP 201
NEMA XX certs to MIL-I-24768/11 PBG, IEC 60893-3 Type 4 PF CP 203
NEMA XXX certs to MIL-I-24768/10 PBE, IEC 60893-3 Type 4 PF CP 201

Canvas C/CE Fabric Reinforced Phenolic - Naturally light tan to brown

This grade is composed of a continuous cotton woven cloth impregnated with a phenolic resin binder. This grade contains a medium weave canvas and is known primarily for it's mechanical properties. This grade is not recommended for primary insulation.

NEMA C certs to Mil-I-24768/16 FBM, IEC 60893-3 Type 4, PF CC 201
NEMA CE certs to Mil-I-24768/14 FBG, IEC 60893-3 Type 4, PF CC 203

Linen L/LE Cotton Fabric Reinforced Phenolic - Naturally light tan to brown

NEMA grades L and LE Linen Cotton-Cloth Reinforced Phenolic is composed of a continuous cotton woven cloth infused with a phenolic resin binder. The finer weave allows for machining more intricate details than canvas grade, such as gear teeth. Canvas phenolic provides electrical insulation than LE, but LE resists moisture better than canvas.

NEMA L certs to MIL-I-24768/15- FBI, IEC 60893-3 Type 4 PF CC 305
NEMA LE certs to MIL-I-24768/13 FBE, IEC 60893-3 Type 4 PF CC 305

G3 Medium Weave Phenolic

Tubes composed of medium weight glass reinforcement combined with a phenolic resin system. G3 offers good mechanical strength and high temperature resistance, and is suitable for rings, collars, spacers, inserts, bushings, insulators, and tailstock.

UL 94HB - Max Temp. 180 F

G3 certs to MIL-I-24768/18, Type GPG, IEC 61212-3-1 Type PF GC 21