Device identity and protection thresholds
The 1.5SMC43A-M3/57T: The 40.9 V minimum breakdown voltage ensures the diode starts conducting before the rail exceeds the downstream device's abs-max rating.
Package and board-fit for surge protection
The operating temperature range of -65°C to 150°C covers cold-start and high-ambient conditions in industrial or automotive environments without derating concerns.
Active lifecycle and compliance posture
General-purpose application classification means it is not restricted to power-line protection; use it on signal, data, or DC bus lines where a 36.8 V standoff fits.