TVS clamp for 15V rails
The SMCJ15A-13: This part sits in the Circuit Protection category and is intended for general-purpose transient suppression on unipolar supply rails — the 15V standoff matches 12V or 15V nominal buses where the TVS must not conduct during normal operation but clamps fast on an overvoltage event.
Clamping voltage and peak current
The 24.4V clamping voltage at 61.5A peak pulse current defines the protection ceiling: the downstream circuitry must survive that voltage for the 10/1000µs pulse duration without latch-up or damage. Breakdown voltage min is 16.7V, so the TVS starts conducting between 16.7V and the standoff — the 1.7V guard band ensures no leakage at the 15V rail under steady-state conditions.
Package and board integration
Housed in the DO-214AB (SMC) package, surface-mount, with a -55°C to +150°C junction temperature range — the wide temperature envelope suits outdoor or under-hood environments where ambient heat stresses the silicon. The part is unidirectional (single channel) and does not include power line protection, so it is best applied on signal or low-power supply lines rather than mains-side transient suppression.