150V rail protection — the clamp threshold and energy rating
Its 150V reverse standoff voltage keeps the device off during normal operation — the rail can ride at 150V without the TVS leaking or clamping. When a surge hits, the breakdown triggers at 167V minimum and clamps the transient to 243V maximum at 2.1A peak pulse current.
Temperature range and package — where this part fits on the board
Operating junction temperature spans -65°C to 150°C, covering military, avionics, and downhole applications where commercial parts fail below -40°C. The DO-214AC (SMA) package is a common surface-mount footprint — the same pad layout as standard SMA diodes, which simplifies BOM consolidation.
Active production — no LTB deadline to manage
Microchip lists the SMAJ150CAE3/TR13 as Active. No last-time-buy window to plan around — the part can be ordered for new designs and repeat BOM lines. Sourced per RFQ against your quantity; confirm lead time at quote.