Automotive-grade transient voltage suppressor for 111V rails
The 1.5SMC130AHE3/9AT is a 1500W unidirectional TVS diode from Vishay's TransZorb® series, designed to clamp transients on 111V nominal DC rails in automotive systems. Its Zener breakdown triggers at a minimum of 124V, clamping surge events to 179V maximum at the rated 8.4A peak pulse current (10/1000µs waveform).
The 179V maximum clamping voltage at 8.4A peak pulse current defines the upper voltage the downstream circuitry must survive. For a 111V rail, this provides a 68V margin above the nominal — enough headroom for most automotive 12V/24V system transients, but check that the load's absolute maximum rating exceeds 179V. This is a standard rating for protecting power distribution nodes, relay coils, and solenoid drivers in engine control units and body controllers. Operating temperature spans -65°C to 150°C junction — the 150°C upper limit covers the under-hood ambient plus self-heating during repetitive surge events. Derate the peak pulse power above 25°C per the datasheet curve; at 125°C ambient the effective power drops to roughly 60% of the 1500W rating.
Package and board integration for DO-214AB (SMC)
The DO-214AB (SMCJ) surface-mount package is a standard JEDEC outline for power TVS diodes. The reel quantity is not specified here, but standard SMC reels typically hold 850 or 3000 pieces depending on tape pitch.
Active production — sourcing for production and prototype builds
As an AEC-Q101 qualified part, this TVS diode is suitable for automotive PPAP submissions. The base product number 1.5SMC130 covers the full family; the /9AT suffix indicates the specific packaging and qualification variant.