Metal Oxide Zenamic Varistor Z21D331 was Z21L331
Lead Free/Rohs Compliant
Manufactured by ATC Semitec
Sold in packs of 5
Varistor Voltage V (min – max) V1mA (v) -330V (294-363)
Maximum Allowable Voltage (Vrms) 210 ACrms 270 DC
Maximum Clamping Voltage (w) 545
Energy (2ms) 160 (J)
Withstanding Surge Current: A 1 time; A 2 times 6500(A)
Typical Capacitance (TYP) khz pf 1100
Varistors have a high natural (non operating impedance) during normal standby use. A varistors impedance drops rapidly when subjected to a high voltage spike clamping the voltage to an acceptable level absorbing the unwanted energy thus protecting voltage sensitive components.
High energy absorption; excellent voltage clamping characteristics; fast response ; low idle power and high surge current capability.
Protection of all types of semi conductor; suppression of switching transients; voltage clipping and circuit damping; absorption of surge voltages associated with lightening strikes; prolongation of contact life and the protection of industrial switching circuits.