400W bidirectional TVS for 51V rail protection
The SMAJ51CA-13-F: It clamps a 51V nominal rail at 82.4V maximum when conducting its peak pulse current of 4.9A, making it suitable for protecting 48V DC buses, telecom supplies, and industrial control power rails from transient overvoltage events.
DO-214AC SMA footprint and thermal envelope
Housed in the standard DO-214AC (SMA) surface-mount package, the SMAJ51CA-13-F reflows on the same footprint as other SMA-packaged diodes. The junction temperature range spans -55°C to 150°C, covering industrial equipment operating in unconditioned enclosures and automotive under-hood environments where ambient heat plus self-heating from repeated surges must stay within the die rating. The base product number SMAJ51 anchors the family; the -13-F suffix denotes the reel packaging variant and RoHS compliance.
Active production — no obsolescence risk for new designs
For a protection diode, lifecycle continuity matters — a TVS that goes NRND forces a requalification of the clamping voltage and surge energy on every protected rail. This part's active status removes that risk from the BOM.