600W Zener TVS in a DO-15 axial body
The P6KE47A-T: Housed in the DO-204AC (DO-15) axial-lead package, it is a through-hole part suited for point-of-entry surge suppression on power or signal lines where a board-level TVS is preferred over a larger MOV or gas tube. The 9.3A peak pulse current rating at the 10/1000µs test condition gives the energy-handling capacity for a typical secondary lightning or inductive-load transient.
Lifecycle reality — obsolete, sourced on request
Diodes Incorporated lists the P6KE47A-T as Obsolete.
Parametric fit for a 40V rail
The 44.7V minimum breakdown voltage ensures the device starts conducting above the 40.2V standoff, providing a guard band against a nominal 36V or 40V supply that may ride up during load dump or alternator field decay. The 64.8V clamp at 9.3A peak pulse current sets the maximum voltage the downstream silicon sees — a downstream regulator rated for 80V abs-max has margin. No power-line protection rating (the device is not intended for direct AC mains suppression), so it is correctly applied on DC buses, signal lines, or low-voltage AC secondary circuits where the transient energy stays within the 600W pulse envelope.