Protection window: standoff, breakdown, clamp
The 1.5KE22A-G: Breakdown occurs at 20.9 V minimum, giving a 2.1 V guard band before the device starts conducting. The single unidirectional channel means the cathode band must face the positive rail — reverse polarity installs the diode in forward conduction.
Junction temperature range spans -55 °C to 150 °C, covering the full automotive under-hood ambient and industrial enclosure thermal profiles. The DO-201AA axial package (also listed as DO-27) mounts through-hole on a standard 0.100-inch pitch footprint; the leaded body dissipates pulse energy into the PCB copper and surrounding air. Power line protection is marked as No — this TVS is intended for DC signal rails or low-impedance DC buses, not for AC mains or high-energy power distribution where a higher-energy MOV or SAD would be specified.
Package and supply format
Supplied in Tape & Box (TB) — the axial leads are taped for automated insertion but boxed rather than reeled. The base product number is 1.5KE, so the 22A suffix indicates the 22 V breakdown variant (20.9 V min) and the A suffix denotes 5 % tolerance on breakdown voltage.