Active production — what the ratings mean for a transient protection BOM line
The 1.5KE10A R0G is an active-production Zener TVS diode from Taiwan Semiconductor, part of the 1.5KE series. The 8.55 V reverse standoff voltage means the diode will not conduct at normal rail voltage up to that level — it sits across the line as a high-impedance shunt until a transient exceeds the 9.5 V minimum breakdown threshold. Clamping at 14.5 V limits the voltage seen by the protected load during a 108 A peak pulse event. This is a unidirectional device (single channel), so it protects one polarity rail. For AC or bidirectional lines, two devices or a bidirectional variant from the same 1.5KE family would be needed.
Package and thermal envelope for the axial leaded form
The operating junction temperature range spans -55 °C to 175 °C, which covers most industrial and outdoor enclosures. The 1500 W rating is derated linearly above 25 °C ambient per the standard TVS derating curve — at 175 °C the peak pulse power drops to near zero, so the diode must be placed away from heat sources or in forced airflow for high-temperature environments.
Sourcing posture for the 1.5KE10A R0G
No official pin-compatible successor or cross-reference is recorded — the 1.5KE family is a mature standard TVS series, and the 1.5KE10A R0G remains the direct order code for this 8.55 V standoff / 1500 W rating in the DO-201 package.