Device identity and key parametrics
The 1.5KE11CA/B: Breakdown occurs between 10.5 V minimum and the clamping voltage, with a reverse standoff of 9.4 V — the rail voltage below which the diode does not conduct appreciably. The single bidirectional channel protects against both positive and negative transients on the same line.
Package, mounting, and temperature grade
Housed in a DO-201AA (DO-27) axial-lead package, the device is through-hole mounted and supplied in bulk box packaging. The DO-201 footprint is standard for 1500 W TVS diodes; the axial leads suit point-to-point wiring or PCB through-holes with adequate copper pad area for heat sinking during the pulse.