1500W bidirectional transient suppressor for 85.5 V rails
The 1.5KE100CAT/R: It clamps transients on a nominal 85.5 V reverse standoff rail to 137 V maximum, passing 11 A peak pulse current through the DO-201 axial package. The 85.5 V standoff voltage suits it for 72 V nominal or 80 V bus protection where a bidirectional clamp is needed — the single device replaces two series diodes in a unidirectional stack.
Clamping voltage and pulse current — the real protection envelope
At 137 V clamping, the diode limits the voltage seen by downstream components during a surge. The 11 A peak pulse current (10/1000 µs) defines the maximum energy the part can absorb in a single event — the 1500 W rating is the product of these two figures, not a continuous power rating. Breakdown occurs at 95 V minimum, so a rail that sags below 95 V during normal operation will not trigger the clamp. The -65°C to 175°C junction range covers both cold-start and hot-soak conditions in outdoor or industrial enclosures.
No pin-compatible second-source or successor is listed — the part is the sole order code for this specification in the 1.5KE6.8C series.