What the ratings mean for your protection circuit
The 1.5KE100CA_R2_00001: The 85.5 V reverse standoff voltage means the diode does not conduct at normal operating levels up to that rail; it starts clamping when the transient exceeds the minimum breakdown voltage of 95 V. The 137 V clamping ceiling at 11 A limits the voltage the downstream circuitry sees during a surge, so the load must survive that peak. The DO-201AE axial package (through-hole) requires a lead-formed footprint on the PCB; the body is 9.1 mm long and the leads are tin-plated copper. The bidirectional channel means a single device protects both polarities — no need for series or anti-series arrangements.
Sourcing an obsolete TVS — what to expect
With an Obsolete lifecycle status, the 1.5KE100CA_R2_00001 is no longer manufactured by Panjit. No official successor order code is recorded, so the replacement path depends on the circuit's voltage and power requirements — a parametric search for a 1500 W, 85.5 V bidirectional TVS in a through-hole package is the starting point. For existing designs that must stay with this exact part number, the supply channel is independent surplus and broker inventory.