Surge clamp for harsh environments
It clamps transients at 13.4V max when the surge current hits 111.9A. The 6.9V reverse standoff voltage means it stays off the rail under normal 5V or 6V supply conditions. The SQ-MELF C package is a surface-mount ceramic barrel — it handles reflow well and the metalized ends give a clear visual on orientation.
Minimum breakdown voltage is 8.65V. If your nominal rail is 6.9V, the diode won't conduct until the transient pushes past 8.65V, giving you margin before the clamp engages. The 13.4V clamp at 111.9A is the ceiling — the protected circuit must survive that peak for the 10/1000µs pulse shape. Bidirectional means one device clamps both positive and negative surges — useful on AC-coupled lines or where the polarity isn't fixed. No power line protection feature confirms it's a signal-line TVS, not a mains-rated MOV replacement.
Active production — no obsolescence chase
The base product number 1N6141 covers the family; the AUS suffix denotes the SQ-MELF package variant.