What the 1.5 kW rating means for your protection budget
The 1.5KE120CA_R2_00001: For a system designer, this rating defines the energy the part can shunt without failing — a 9.1 A peak pulse current at the 165 V clamping voltage means the diode absorbs a transient of roughly 1.5 kJ into the silicon junction before the thermal limit is reached. The 102 V reverse standoff voltage is the DC operating rail the diode leaves untouched; the 114 V minimum breakdown is where conduction starts. A 48 V or 72 V bus with normal transients below 100 V sits safely below this threshold, while a surge that drives the line above 114 V triggers the clamp.
Package and board-fit note for the DO-201AE axial
The DO-201AE axial package is a through-hole form factor with a 0.052-inch diameter lead — it requires a 0.040-inch to 0.045-inch plated through-hole on the PCB. The body length is approximately 7.6 mm, and the lead spacing after forming should match the hole pitch on the board layout. Operating temperature spans -65°C to 175°C junction, which covers military and industrial thermal profiles. The wide range means the part maintains clamping performance from cold-start conditions in outdoor enclosures up to hot environments near power supplies or engines.
Obsolete — sourcing through independent channels
Panjit lists this part as Obsolete. No official successor or second-source cross-reference is recorded in the manufacturer's lifecycle data. Production has ended; the last-time-buy window has closed. Each lot is verified for date-code authenticity and RoHS compliance before quoting. Quantities are confirmed at RFQ — no blanket stock claim is made.