13V rail clamp in a DO-214AA footprint
It is a single bidirectional channel, meaning it protects both polarities from a single device — useful for AC signal lines or bipolar DC buses where polarity is not fixed. The breakdown voltage starts at 14.4 V min, so the rail must stay below that threshold under normal operation.
Package and polarity for layout
Microchip lists the SMBJ13CE3/TR13 as Active. For BOM planning, the active status means no immediate risk of obsolescence. The part is available for quote against your quantity — confirm lead time and pricing at time of order through your preferred distributor.