Bidirectional Zener TVS for 12V automotive rails
With a reverse standoff voltage of 13.6 V and a minimum breakdown voltage of 15.2 V, it protects 12 V nominal rails from load-dump and inductive kickback events. The bidirectional configuration simplifies layout by eliminating polarity concerns on AC-coupled or floating lines.
onsemi has marked the P6SMB16CAT3 as Obsolete. This means the manufacturer no longer produces the part and has no scheduled last-time-buy window. New designs should not specify this order code. For existing BOMs, the part can be sourced through independent distribution. The DO-214AA (SMB) package is common, so cross-shipping a replacement in the same footprint is straightforward if a direct substitute is identified.
The capacitance of 610 pF at 1 MHz is low enough for most signal lines but may load high-speed data buses above 1 Mbps — verify signal integrity if used on CAN FD or LIN.