What the 1.5 kW rating means for your rail
The 1.5KE20AG: That 1.5 kW rating means it can clamp a 54 A surge to 27.7 V without failing — sized for secondary protection on 12 V or 15 V DC rails where the steady-state voltage is 17.1 V.
Obsolete — sourcing through independent channels
Littelfuse lists the 1.5KE20AG as Obsolete. No pin-compatible drop-in replacement from Littelfuse is documented.
Housed in a DO-201AD axial-lead package, the 1.5KE20AG mounts through-hole — the lead bend and board hole pattern follow standard axial diode land patterns. Operating junction temperature range spans -65°C to 175°C, covering industrial and automotive under-hood thermal profiles without derating.