1500W Zener TVS for general-purpose transient suppression
The 1.5KE47A_R2_00001: The 40.2V reverse standoff voltage means the part does not conduct at normal DC bus levels up to that point; breakdown starts at 44.7V minimum, giving a guard band before clamping engages.
DO-201AE axial package and operating envelope
The part does not include power line protection (no internal filter or coordinated crowbar), so it is suited for signal and DC rail transient suppression rather than AC mains primary protection.
Obsolete — sourcing through independent channels
For existing BOM lines that require this exact part number, supply is available through independent surplus and broker channels. Because the 1.5KE series uses a standard DO-201AE footprint and the 1.5KE47A electrical parameters (44.7V breakdown, 64.8V clamp) are common across multiple manufacturers, a pin-to-pin functional equivalent from another brand may be a viable alternative — confirm the breakdown voltage and clamp match before substituting.