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Glossary Anti-Static Material - A material which has a surface resistivity in the range of 109 - 1014 ohms/square. Humidity changes can cause amine wetness of material and can affect contents of the bag. Capacitance - The ability of a component or material to store an electronic charge. Carriers - Holders for electronic parts and devices which facilitates handling during processing. Charge - Measured in Coulombs or factions thereof. Conductive Materials - A material which has a surface resistivity of 105 ohms/square or less. Creates a Faraday cage effect. Opaque and not suited for clean room use. Conductor - A substance or body that allows a current of electrons to pass continuously along it or through it. Coulomb - A coulomb is a specific quantity of electrons on a body and is expressed as 1 coulomb = 6.24 x 1018 electrons. Current - Measured in amperes or fractions thereof. DIP - Dual In-line Package. A type of housing for integrated circuits. Electromagnetic Interference - Sources are sparks, lightning, radar, radio and TV transmission. EMI can cause undesirable voltage signals. Electromagnetic Shield - An electromagnetic shield is a screen places round devices to reduce the effect of electric and magnetic fields. Electron beam cured - A process that rapidly forces a material to permanently change its properties. (i.e. from virgin poly to static dissipative) Electrostatic Discharge - A transfer of electrostatic charge between bodies of different electrostatic potentials. Electrostatic Field - The region surrounding an electrically charged object. Ground - A metallic connection with the earth to establish zero potential. Grounding - Connecting to ground or to a conductor that is grounded. Insulator - A material that does not conduct electricity. Ionization - The process by which a neutral atom or molecule acquires a positive or negative charge. Joule - A unit of energy. Non-conductor - A dielectric or insulating material Ohm - Unit of electrical resistance. Potential - Measured in millivolts, volts, or kilovolts; stored energy. Radio Frequency Interference - Any electrical signal capable of interfering with the operation of electrical or electronic equipment. Resistance - A property of conductors which depends on their dimensions, material, and temperature. RFI - Abbreviation for radio frequency interference. The spark from a static discharge is a source of RFI. Can interfere with the the operation of electrical equipment. Static-Dissipative Material - A material which has a surface resistivity in the range of 105 - 109 ohms/square. Static Electricity - An accumulation of electric charge on an insulated body Staticure/Dri-Stat - New and improved replacement for pink anti-static poly. Dissipative clear poly that has been electron beam cured and contains no amines. Humidity changes will not cause wetness of material that may damage contents. Non-corrosive, non-contaminating, well-suited for clean room applications. Meets E.S.D. protective material definition as per DOD-HDBK-263 Static Shielding - Transparent static shielding bags. A layered lamination with a metallic layer for Faraday cage protection. Inner layer also provides anti-static protection. Probably the best overall E.S.D. protection available in bag form. Meets many requirements set forth in E.I.A.-IS-5A. Surface Resistivity - The ration of DC voltage applied to an insulation system to the current that passes across the surface of the system. Triboelectric - Pertaining to electricity generated by friction or rubbing. Volt - Unit of voltage, potential, and electromotive force. Volume Resistivity - The ratio of the DC voltage per unit of thickness. |
