The 1.5KE13C-B is listed as Obsolete by the manufacturer. For existing designs, the part is available through independent surplus and broker channels. Sourcing is confirmed per RFQ — quantities are lot-specific and not guaranteed for continuous supply.
Surge protection envelope — 1500W at 11.1V standoff
That clamping voltage is what the downstream circuitry sees during the event — a 12V rail with 20V-tolerant components is safe here. A single bidirectional device protects both positive and negative transients, saving board space versus two unidirectional diodes back-to-back.
Package and field-service reality
Housed in a DO-201AA (DO-27) axial leaded package — through-hole mount, easily swapped on a bench or in the field with basic tools. No hot-air station needed, no reflow profile to manage. Not rated for AC mains primary protection — this is a secondary-side or DC rail suppressor.