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  2. Electronic component - Wikipedia

    en.wikipedia.org/wiki/Electronic_component

    An electronic component is any basic discrete electronic device or physical entity part of an electronic system used to affect electrons or their associated fields. Electronic components are mostly industrial products , available in a singular form and are not to be confused with electrical elements , which are conceptual abstractions ...

  3. RKM code - Wikipedia

    en.wikipedia.org/wiki/RKM_code

    For brevity, the notation omits to always specify the unit (ohm or farad) explicitly and instead relies on implicit knowledge raised from the usage of specific letters either only for resistors or for capacitors, [nb 1] the case used (uppercase letters are typically used for resistors, lowercase letters for capacitors), [nb 2] a part's appearance, and the context.

  4. Electronic Industries Alliance - Wikipedia

    en.wikipedia.org/wiki/Electronic_Industries_Alliance

    RMA Resistor Color Code Guide, circa 1945–1950. In 1924, 50 radio manufacturers in Chicago formed a trade group called the Associated Radio Manufacturers. [2] This organization was designed to control the licensing of the large number of radio patents so that each member could have access to all the relevant patents necessary to build radio transmitters, antennas and receivers.

  5. Varistor - Wikipedia

    en.wikipedia.org/wiki/Varistor

    Modern varistor schematic symbol, which is the same as a thermistor symbol [1] A varistor (a.k.a. voltage-dependent resistor (VDR)) is a surge protecting electronic component with an electrical resistance that varies with the applied voltage. [2] It has a nonlinear, non-ohmic current–voltage characteristic that is similar to that of a diode ...

  6. Metal electrode leadless face - Wikipedia

    en.wikipedia.org/wiki/Metal_electrode_leadless_face

    Metal electrode leadless face (MELF) is a type of leadless cylindrical electronic surface mount device that is metallized at its ends. MELF devices are usually diodes and resistors. [1] The EN 140401-803 and JEDEC DO-213 standards describe multiple MELF components. [2]

  7. Preferred number - Wikipedia

    en.wikipedia.org/wiki/Preferred_number

    … 0.1 0.2 0.5 1 2 5 10 20 50 100 200 500 1000 … This series covers a decade (1:10 ratio) in three steps. Adjacent values differ by factors 2 or 2.5. Unlike the Renard series, the 12–5 series has not been formally adopted as an international standard. However, the Renard series R10 can be used to extend the 12–5 series to a finer ...

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