Littelfuse V12Za2P.
METAL OXIDE VARISTOR, 8V, 30V, RAD; Voltage Rating VAC:6V; Voltage Rating VDC:8V; Product Range:ZA Series; Clamping Voltage Vc Max:30V; Varistor Case Style:Disc 10mm; Peak Surge Current @ 8/20µS:250A; Operating Temperature Min:-55°C.