Z21L121 Metal Oxide Zenamic varistor now Z21D121 120v
Varistor Voltage 120 (108-132) V1mA(V)
Maximum Allowable Voltage 75 ACrms(V) 100 DC(V)
Clamping Voltage (max.) 200 V(V)
Rated Power 1.0 (W)
Maximum Energy 106 (10/1000µs)(J) 75 (2ms)(J)
Maximum Peak Current 6500 (8/20µs) 2times (A)
Capacitance 5500 ( TYP) 1khz (pF)
Sold in packs of 5
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.