1500W peak pulse power — the surge rating that defines the protection envelope
The 1.5KE56CA-T: The 77V maximum clamping voltage at 19.5A peak pulse current (10/1000µs waveform) sets the voltage the protected circuit must survive — anything below that rail is safe.
DO-201 axial package — through-hole fit for high-power board-level protection
Housed in a DO-201AA / DO-27 axial-leaded package (supplier device package DO-201), the 1.5KE56CA-T mounts through-hole on a PCB or terminal block. The axial leads carry the 19.5A peak pulse current without trace lift-off — the lead frame and body are sized for the thermal pulse of a 10/1000µs surge. The -T suffix indicates Tape & Reel packaging, which is standard for automated insertion equipment despite the through-hole form factor.
Obsolete — sourcing through independent distribution
For existing BOM lines that specify this exact ordering code, supply is maintained through independent surplus and broker channels. Each lot is verified for authenticity and traceability at the time of sourcing.