FR4 Boards | McMaster-Carr

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System of Measurement

Thickness

Width

Length

Color

Shape

Performance

Electrically Insulating

Material

Fiberglass-Reinforced Plastic

Maximum Temperature

For Use Outdoors

Dielectric Strength

350 V/mil to 800 V/mil

REACH

Compliant

Not Compliant

Export Control Classification Number (ECCN)

EAR99

RoHS

Compliant

Not Compliant

DFARS Specialty Metals

Exempt

Flexural Strength

45,000 psi to 55,000 psi

45,000 psi to 60,000 psi

Tolerance Rating

Standard

Tight

Impact Strength

5.5 ft·lbf/in to 9.5 ft·lbf/in

5.5 ft·lbf/in to 12 ft·lbf/in

Minimum Temperature

-50° F

Not Rated

Tensile Strength

32,000 psi to 40,000 psi

35,000 psi to 50,000 psi

Compressive Strength Range

35,000 psi to 66,000 psi

35,000 psi to 68,000 psi

Hardness

Water Absorption

Number of Copper Clad Sides

Hole Center-to-Center

0.1"

2 mm

Solder Connection Type

667 Products

About Composites

Multipurpose Flame-Retardant
Garolite G-10/FR4 Sheets and Bars

A good all-around choice, Garolite G-10/FR4 is strong, machinable, and electrically insulating. It meets UL 94 V-0 for flame retardance.

Prototyping Circuit Boards

Circuit Boards

Drill holes of any size and etch your own circuit board design into copper-clad boards.

Ready-to-Use Circuit Boards

Also known as breadboards or proto-boards, these boards come with tin--lead-plated copper holes and solder pads or strips, so you can solder on components. They create more permanent connections than solderless circuit boards.

Ready-to-Use Circuit Boards with Enclosure

Also known as project boxes, these circuit boards are shaped to fit the included enclosure, so you don’t have to cut your board.

Lead-Free Ready-to-Use Circuit Boards

The gold-plated copper holes and solder pads on these boards contain no lead.