Transient suppressor for field-service and panel protection
The 1.5KE11CA-E3/73: With a 9.4 V reverse standoff voltage, it sits across a 9 V or 12 V rail without conducting during normal operation, then fires at 10.5 V minimum breakdown to shunt the surge away from downstream silicon.
Clamping voltage and protection window
The 15.6 V clamping ceiling at 96.2 A peak pulse current means a 12 V bus sees the spike held to under 16 V — well within the abs-max rating of most 16 V-rated DC-DC converters and linear regulators feeding the board. Bidirectional construction (one channel) protects against both positive and negative transients with a single through-hole part — no need to orient the cathode; it clamps equally in both directions.
DO-201AA axial package and field-swap fit
Housed in the DO-201AA (DO-27) axial-lead package, the 1.5KE11CA-/73 is a through-hole part that solders into a board or clips into a panel-mount holder — the axial leads make it a straightforward swap on site with a standard iron, no hot-air station needed.