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Metal-oxide varistor manufactured by Siemens & Halske AG. 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]
The IEEE 315 standard contains a list of Class Designation Letters to use for electrical and electronic assemblies. For example, the letter R is a reference prefix for the resistors of an assembly, C for capacitors, K for relays. Industrial electrical installations often use reference designators according to IEC 81346.
Wire crossover symbols for circuit diagrams. The CAD symbol for insulated crossing wires is the same as the older, non-CAD symbol for non-insulated crossing wires. To avoid confusion, the wire "jump" (semi-circle) symbol for insulated wires in non-CAD schematics is recommended (as opposed to using the CAD-style symbol for no connection), so as to avoid confusion with the original, older style ...
Metal oxide varistor (MOV), surge absorber, TVS – Over-voltage protection; Inrush current limiter – protection against initial Inrush current; Gas discharge tube – protection against high voltage surges; Spark gap – electrodes with a gap to arc over at a high voltage; Lightning arrester – spark gap used to protect against lightning ...
The JFET is a long channel of semiconductor material, doped to contain an abundance of positive charge carriers or holes (p-type), or of negative carriers or electrons (n-type).
A common type of axial-leaded resistor today is the metal-film resistor. Metal Electrode Leadless Face resistors often use the same technology. Metal film resistors are usually coated with nickel chromium (NiCr), but might be coated with any of the cermet materials listed above for thin film resistors.
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Metal-oxide varistor (MOV) + Up to 70 000 Amps surge + Lifetime @ 100 Amps, 8x20 uS pulse shape: 1000 surges - Shunt capacitance >500 pF - Leakage approximately 10 micro amps Avalanche diode + Lifetime @ 50 Amps, 8x20 uS pulse shape: infinite + Shunt capacitance: 50 pF - Low surge capability: 50 Amps @ 8x20 uS pulse shape - Leakage ...