Bidirectional clamping for bipolar signal protection
The 1.5KE7.5CA A0G: Single bidirectional channel means one device protects both polarities on a signal line — useful on RS-485 pairs, sensor inputs, or any differential bus where the common-mode voltage swings above and below ground. The 6.4 V reverse standoff voltage sits safely above a nominal 5 V supply rail, so the TVS stays out of conduction during normal operation and only fires when the transient exceeds the 7.13 V breakdown threshold.
Through-hole DO-201 — board-fit and thermal reality
DO-201AA axial package (also known as DO-27) is a through-hole form factor that sinks heat into the PCB copper via the lead wires — the 175 °C maximum junction temperature gives headroom for repeated surge events in high-ambient environments like industrial control cabinets or outdoor telecom enclosures.