The 1.5KE11C-B: The single bidirectional channel means the device clamps symmetrically in both polarities — suited for AC signal lines or DC rails where the transient polarity is unknown. The 1500 W rating at the standard 10/1000 µs test waveform is the headline surge capability; real-world energy handling depends on the actual pulse width and duty cycle.
DO-201 axial package and temperature range
Housed in a DO-201AA / DO-27 axial leaded package (supplier device package DO-201), the 1.5KE11C-B mounts through-hole on the PCB. The operating junction temperature range spans -55°C to 175°C, covering the full industrial temperature envelope and allowing deployment in high-ambient environments such as motor-drive cabinets or outdoor telecom power supplies.
A parametric search on standoff voltage (9.4 V) and package (DO-201) is the practical cross-reference path.