1500 W bidirectional transient suppressor for 18.8 V rails
The 1.5KE22CA-TP is a 1500 W peak-pulse-power bidirectional Zener TVS diode in a DO-201AE axial-lead through-hole package. The 20.9 V minimum breakdown voltage means the device starts conducting just above the rail's normal operating ceiling, leaving the circuit undisturbed during steady-state conditions.
What the clamping and standoff ratings mean for the board
The 30.6 V maximum clamping voltage (V_C) at I_PP is the voltage the load sees during the transient; any downstream part must survive this peak without damage. The 1.5 kW rating is the product of clamping voltage and peak pulse current — a higher clamping voltage means lower peak current capability for the same power budget.
Active production and sourcing posture
No pin-compatible second-source or successor is documented in the ledger.