Acrylonitrile Butadiene Styrene (ABS) is an opaque thermoplastic and amorphous polymer.
Loss of electromagnetic energy or dissipation when passing through an object.
A mixture of two or more elements classified by the ingredient with the largest content e.g. copper alloy.
A hole, gap or opening in an electronic enclosure where electromagnetic fields may travel.
An arc is the luminous current discharge which is produced when strong current leaps across the gap between electrodes or within a circuit.
Equipment and protective systems intended for use in potentially hazardous atmospheres.
Loss of transmission signal strength measured in decibels (dB).
A range of frequencies within a given band, in particular that used for transmitting a signal.
Beryllium Copper. An alloy of beryllium and copper used to form BeCu fingerstrip and other contacts. BeCu has excellent spring qualities and is frequently used for EMI shielding purposes.
A gasket that can be wiped from either side without snagging.
Connected by compressing, welding or other mechanical means to five a good low impedance electrical path which is not affected by heat or corrosion.
Computer Aided Design.
Two materials that form a stable system with no corrosion when in contact with each other.
Pressure applied to a material rather than tension.
Percentage of permanent height reduction under load, time and temperature.
A material’s ability to conduct electrical current.
A protective chemical coating or polymer film 25-75µm thick (50µm typical) that conforms to circuit board topology. It protects electronic circuits from harsh environments that may contain moisture and or chemical contaminants.
Resistance in ohms between two conductive objects contacting each other.
Destruction of a metal surface by chemical contamination or oxidation.
The effect of coupling a signal from one channel to another.
The changing of the physical or chemical properties of material by chemical reaction through catalysts, heat or a combination of both.
A measure of deflection before failure.
Decibels, one tenth of a bel.
Difference in height between free and compressed state (gaskets).
The change in performance of a material which is undesired but not necessarily a fault.
Having the property of transmitting electric force without conduction; insulating.
The ability of a material to return to its original state.
A polymer which has rubber or elastic like properties.
A material that is unable to conduct electricity due to its high level of electrical resistance.
An electric charge on an object caused by friction or triboelectric charging.
The distance a metal can stretch before breaking relative to original length.
Electromagnetic Compatibility. The concept of enabling different electronic devices to operate without mutual interference.
Electromagnetic Interference. A disturbance generated by an external source that affects an electrical circuit by electromagnetic induction, electrostatic coupling, or conduction.
Electromagnetic Pulse. High intensity transient electromagnetic fields produced by nuclear explosions.
Ethylene propylene diene monomer, an elastomer (rubber).
Electrostatic Discharge. The release of static electricity when two objects come into contact with each other.
Electrostatic Discharge Sensitive. Any electronic or electrical component which can be damaged by static charges which build up on people, tools or other non-conductors or semi-conductors.
The stress level over a number of cycles at which failure is unlikely to occur.
Material added to another material to improve its existing properties or add new ones.
Synthetic rubber used in applications using oils and fuels.
The ability of a material to be worked cold, for a spring this usually means making bends in the material.
Giga (a multiplier 109).
Corrosion occurring between two dissimilar metals.
An electrically conductive path between two points.
Hazardous air pollutant.
Hertz. Unit of frequency equivalent to one cycle per second.
Input/output gaskets used in telecommunications and computer applications. An I/O shield minimises dust that may get into the computer and also creates an electromagnetic shield for the housing. If several USB devices are connected, an I/O shield will be required to stop interference.
An energy which interferes with the reception of desired signals.
Ingress protection (dust, water).
Institute for Printed Circuits, the association connecting electronic industries.
Mega (a multiplier 10^6).
Milli (a multiplier 10^3).
Resistance to damage by abrasion, scratching.
Methyl ethyl ketone is an organic compound with the formula CH3C(O)CH2CH3.
Nickel copper alloy.
Unit of electrical resistance.
Unit of material volume resistivity.
Openings per inch (mesh).
Printed circuit board.
Peripheral Component Interconnect.
Poly (lactic acid) or polylactide (PLA) is a biodegradable and bioactive thermoplastic aliphatic polyester derived from renewable resources, such as corn starch.
Rambus dynamic random access memory.
Registration, Evaluation, Authorisation and Restriction of chemicals (European Union Regulation 2006).
Radio Frequency Interference. Electromagnetic interference within the frequency range of 3kHz to 300GHz.
The Restriction of Hazardous Substances in Electrical and Electronic Equipment Directive (2011/65/EU).
Effectiveness of a given material as a radio frequency shield under specific conditions measured in dB.
Polymeric elastomer material.
A file created by a CAD program which is commonly used in 3D printing.
Resistance between two sides of a unit square of its surface.
Substances of very high concern.
Tinned copper steel.
Glass transition temperature.
The property of a material to conduct heat.
Underwriters Laboratories, the world’s largest not for profit product safety and certification organisation.
Resistance of a fluid to flow under stress.
Volatile Organic Compound. Organic chemicals that have a high vapour pressure at ordinary room temperature.
Electrical resistance between opposite faces of a centimetre cube of material expressed in ohm centimetre (ohm/cm).