Clamping voltage and peak pulse power
The 1.5KE300A/B: The 285V minimum breakdown voltage ensures the avalanche triggers before the clamping limit is reached, giving a defined protection window between the standoff and the clamp.
Package and deployment context
Housed in a DO-201AA / DO-27 axial leaded package (supplier device package DO-201), this is a through-hole part intended for point-of-use transient suppression on power rails, signal lines, or DC buses in industrial control, telecom, and general-purpose equipment. The -55°C to 150°C junction temperature range covers both outdoor cabinet and under-hood automotive environments, though the part carries no explicit AEC-Q grade in the listing. No power line protection feature is claimed — this is a secondary-side transient suppressor, not a primary mains protector.