What are they? Metal Oxide Varistors, more commonly known as MOVs are devices that provide excellent transient voltage suppression. They are a type of non-linear device that feature similar characteristics to Zener diodes. They are used to protect vulnerable electronic circuits and components from overvoltage conditions that can cause damage. Any potentially destructive overvoltage energy is dissipated as heat. Construction: Metal oxide varistors are typically constructed from zinc oxide and combined with small additions of other metal oxides such as cobalt, magnese or bismuth. These materials are sintered into ceramic casings during manufacture. Although MOVs are available in different formats, they are most commonly radial leaded discs. Applications: Suppression of lightning and other high levels of transient energy Low voltage power supplies in DC circuits Low voltage power supply in automotive applications Protection from internal transients within capacitor discharges, relay switching and inductive load switching
Description:
Panasonic VF surge absorbers are designed for flow
and reflow soldering. These surge absorbers feature low clamping voltage and large withstanding surge current capability. VF surge absorbers are part of the Zinc-oxide Non-Linear Resistor (ZNR) range. Saving cost and board ...
Description:
Leaded varistors are varistor elements with lead wires
as terminals. The coating of the varistors is made of flame-retardant material. Wide operating voltage range 11 … 1100 VRMSHigh surge current ratings up to 8 kANo derating up to 105 °C ...
Description:
Construction:Round varistor element, leadedCoating: epoxy resin, flame-retardant Terminals:
tinned wireFeatures:High-energy SuperioR series E4Wide operating voltage range 130 … 750 VRMSAll types duty cycle @ 6 kV/ 3 kA = >10 pulsesVery high surge current rating up to 20 kA.
Description:
Standard radial epoxy-coated MOV with tinned-copper leads. Tinned
copper wire leads with a ceramic body coated with epoxy resinRated for surge current (8//20 μs) and for energy (2ms).