What does FR-4 stand for?
What does FR-4 stand for?
flame retardant
FR4 is a standard defined by the NEMA (National Electrical Manufacturers Association) for a glass-reinforced epoxy resin laminate. FR stands for “flame retardant” and indicates that the material is compliant with the UL94V-0 standard on plastic material flammability.
What is FR-4 used for?
FR4 is rightly the most used material in PCB construction. Boards made from FR4 are strong, water resistant, and provide good insulation between copper layers that minimizes interference and supports good signal integrity.
Is FR-4 safe?
PCB resin (aka FR4 – which is the most common) is fiberglass. It’s dust most certainly _IS_ toxic, and should not be inhaled (in the event someone is cutting or drilling the PCB).
How strong is FR-4?
It is well-known as one of the strongest plastic materials available. As we’ve written in this blog before, FR-4 rivals the strength of some metals. The Ultimate Tensile Strength (UTI) of FR-4 is 45,000 PSI while the UTI of cast iron is 29,000 PSI. Copper comes in at 31,900 PSI and aluminum is 43,500 PSI.
What does fr 4 stand for in Science category?
FR-4 (or FR4) is a NEMA grade designation for glass-reinforced epoxy laminate material. FR-4 is a composite material composed of woven fiberglass cloth with an epoxy resin binder that is flame resistant ( self-extinguishing ). “FR” stands for flame retardant, and does not denote that the material complies with the standard UL94V-0
What kind of laminate material is Fr 4?
FR-4 (or FR4) is a NEMA grade designation for glass-reinforced epoxy laminate material.
What kind of material is FR-4 fire resistant?
FR-4 is a composite material composed of woven fiberglass cloth with an epoxy resin binder that is flame resistant (self-extinguishing).
What kind of circuit is FR-4 used for?
FR-4 is also used in the construction of relays, switches, standoffs, busbars, washers, arc shields, transformers and screw terminal strips. ^ a b Azar, K; Graebner J. E. (1996). “Experimental Determination of Thermal Conductivity of Printed Wiring Boards”.