Obsolete — sourcing reality for the P6KE43A-T
Availability is lot-specific and confirmed at quote time; the part is sourced to order against an RFQ. No pin-compatible direct replacement is documented by the OEM. A functional substitute would require matching the 36.8V standoff, 600W peak pulse rating, and DO-15 axial package — a parametric search against those three constraints will yield candidates from multiple TVS diode families.
Through-hole DO-15 — board integration and temperature range
The DO-204AC (DO-15) axial-lead package is a through-hole form factor — it solders into a plated through-hole on the PCB, with the body standing off the board. This is a single-channel unidirectional device — the cathode band on the DO-15 body must be oriented toward the protected rail, anode to ground. No power line protection is specified, so it is intended for signal and low-power DC bus clamping, not AC mains or high-energy primary suppression.