What the ratings mean for circuit protection
The 1.5KE7.5CA_R2_00001: Single bidirectional channel means it protects both polarities in one package, suited for AC-coupled signal lines or DC rails where the surge can swing positive or negative relative to ground.
Package and physical integration
Housed in a DO-201AE axial-leaded through-hole package — the body diameter and lead spacing match the standard footprint for this power class, and the axial leads allow either vertical or horizontal mounting on the PCB. Marked as not intended for power line protection — this TVS is designed for signal or low-voltage DC rail clamping, not for AC mains surge suppression where a higher standoff and different waveform rating would be required.