V/I and derating curves are attached to the data sheet. The curves are sorted by VRMS and then by case size, which is included in the type designation. General . K Datasheet, K PDF, K Data sheet, K manual, K pdf, K, datenblatt, Electronics K, alldatasheet, free, datasheet, Datasheets, data sheet. S10K Specifications: Maximum AC Volts: VAC ; Maximum DC Volts: VDC ; Current-Surge: kA ; Package / Case: Disc 10mm ; Varistor Voltage: .
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When a large voltage is applied, the diode junction k varistor datasheet down due to a combination of thermionic emission and electron tunnelingand a large current flows. This is a type of spark gap that may use air or an inert gas mixture and often, a small amount of radioactive k varistor datasheet such as Nito provide a more consistent breakdown voltage and reduce response time.
Potentiometer digital Variable capacitor Varicap.
K275 VARISTOR DATASHEET DOWNLOAD
This type contains a dwtasheet mass of zinc oxide grains, in a matrix of other metal k varistor datasheet such as small amounts of bismuth, cobalt, manganese sandwiched between datzsheet metal plates the electrodes.
K varistor datasheet low-capacitance varistors are, dataaheet, unable to withstand large surge currents simply due to their compact PCB-mount size. Electrical components Resistive components. MOVs are specified according to the voltage range that they can tolerate without damage.
If excessive current is conducted by a MOV, it may fail catastrophically, keeping the load connected, but now without any surge protection.
They have peak current ratings k varistor datasheet about 20 to amperes, and peak energy k varistor datasheet from 0. Multi-layer varistor MLV devices provide electrostatic discharge protection to electronic circuits from low to medium energy transients in sensitive equipment operating at volts dc.
Application of sustained over-voltage to a MOV can cause high dissipation, potentially resulting in the MOV device catching fire. Varistors are used as k varistor datasheet or compensation elements in circuits either to provide optimal operating conditions or to protect against excessive transient voltages. Depending on the level of conducted current, dissipated heat may be insufficient to cause failure, but may degrade the MOV device and reduce its life expectancy.
The mass of randomly oriented grains is electrically equivalent to a network of back-to-back diode pairs, each k varistor datasheet in parallel with many other pairs.
Datashwet a small or moderate voltage is applied across the electrodes, only a k varistor datasheet current flows, caused by reverse leakage through the k varistor datasheet junctions. Wikimedia Commons has media related to Varistors. However, they can handle significantly higher fault currents and withstand multiple high-voltage hits for example, k lightning without significant degradation.
A user may have no indication when the surge suppressor has failed. Capacitor types Ceramic resonator Crystal oscillator Inductor Parametron Relay reed relay mercury switch. Varlstor current resulting from a strike may melt, burn, or even vaporize the varistor.
K Datasheet catalog
The probability of catastrophic failure can be reduced by increasing the rating, or using specially selected MOVs in parallel. The term is only used for non-ohmic varying resistors.
Unfortunately, these devices may have higher breakdown voltages and longer response times than varistors. Examples include a loss of a neutral conductor or shorted lines on the high voltage dattasheet. The main parameter affecting varistor life expectancy is its k varistor datasheet Joule rating. In contrast to a diode however, it has the same characteristic for both directions of traversing current.
Both types are available over a wide k varistor datasheet of voltages. Grisdale in the early s was used to guard telephone lines from lightning.
Under datasheett utility voltage conditions, this is not a problem. Another type of transient suppressor is the gas-tube suppressor. At low voltage varisotr has a high electrical resistance which decreases as the voltage is raised.