Transient protection window and what the ratings mean for the board
The SMBJ43A-13-F: Its 43 V reverse standoff voltage means the diode stays off below that level, so it does not leak into the protected circuit during normal operation. The unidirectional channel means it clamps only one polarity; for AC or bidirectional lines you would need two devices or a bidirectional part.
The general-purpose application tag means it fits across DC power inputs, I/O lines, and low-frequency signal ports where the 10/1000 µs waveform is representative.
Sourcing and lifecycle posture
No stock-holding claim; each RFQ is confirmed on the spot market or factory lead time.
