1500W peak pulse — where it fits in the protection chain
The 1.5KE47A-B: With a 40.2V reverse standoff voltage, it clamps transients at 64.8V maximum, conducting 23.2A peak pulse current. This places it on 48V DC rails or 24V AC secondary lines where the nominal voltage stays under 40V but surge energy can reach 1.5 kW.
Obsolete — sourcing through independent channels
Diodes Incorporated lists the 1.5KE47A-B as obsolete. The axial DO-201 footprint is common across the 1.5KE family, so a functional equivalent from another manufacturer (same package, same standoff voltage) may be a drop-in, but no pin-compatible cross-reference is documented here.
Temperature range and package — board-fit constraints
The DO-201AA / DO-27 axial body is a through-hole package — the leads are 0.040-inch diameter tin-plated copper. Bulk packaging means the parts are tube- or tray-shipped, not reeled; plan for hand-insertion or tube-fed auto-insertion.