The 1.5KE68CA A0G is a bidirectional Zener-type TVS diode in the DO-201AA (DO-27) axial-lead package, intended for through-hole mounting. The axial body and 0.042-inch lead diameter suit point-to-point wiring or PCB insertion with a 0.100-inch lead spacing pattern — the same footprint as industry-standard 1.5KE parts. The 58.1 V reverse standoff voltage defines the DC operating ceiling below which the diode presents high impedance; breakdown occurs at a minimum of 64.6 V, so a 48 V or 60 V nominal rail has margin before the device starts conducting.
Operating junction temperature range spans -55°C to 175°C, covering military and industrial ambient extremes. The 175°C upper limit allows the device to absorb repetitive pulse energy without derating the junction — relevant for avionics power buses and outdoor telecom rectifiers where ambient heat and transient stress coincide. The bidirectional configuration protects circuits where the transient can swing positive or negative relative to ground — common on data lines, sensor inputs, and 24 VDC control loops.