Breakdown window and clamping ceiling
The 1.5KE130A-T: The minimum breakdown voltage is 124 V, so the TVS starts conducting somewhere above that threshold. A 111 V reverse standoff means the diode draws negligible leakage at normal bus voltage; it only activates when a transient pushes the rail above the breakdown knee.
Package and board integration
Housed in a DO-201AA / DO-27 axial leaded package (supplier device package DO-201), this is a through-hole part intended for point-to-point wiring or PCB mounting with lead bending. The axial form factor suits high-reliability layouts where the TVS sits close to the transient entry point — a terminal block or connector — with short traces to minimise loop inductance.
Obsolete — sourcing reality for this TVS
Diodes Incorporated lists the 1.5KE130A-T as obsolete. For a BOM line that depends on this exact clamping voltage and package, the surplus channel is the only path; no pin-compatible drop-in replacement is documented.