1500 W surge rating — the clamping decision for a 15 V rail
The 1.5KE18CA A0G: That 1500 W figure means the device can absorb a 60 A surge and clamp it to 25.5 V before the protected circuit sees overvoltage. For a 15.3 V reverse standoff rail, the protection window starts at 17.1 V breakdown — the diode stays transparent below that and only conducts when the transient exceeds the normal operating voltage. The single bidirectional channel protects a signal pair or a floating supply line in one package — no need for two back-to-back unidirectional devices. General-purpose application covers power supplies, telecom ports, and industrial I/O where the transient energy is moderate and the line impedance keeps the surge within the 1500 W envelope.
Through-hole DO-201 package and temperature range
Housed in a DO-201AA axial package with through-hole mounting, the part suits point-to-point wiring on terminal blocks or perforated boards where surface-mount reflow is not an option. The junction temperature range spans -55 °C to 175 °C, covering outdoor enclosures and engine-bay environments without derating at the high end — the 1500 W rating holds across the full temperature band. Supplied in Tape & Box (TB) format for hand-insertion or axial-lead forming machines. The base product number 1.5KE18 is shared across the family; the full suffix A0G specifies the bidirectional polarity and the packaging variant.