Active production, automotive-grade transient protection
The 1.5SMC100AHM3/I: The single unidirectional channel means this part protects one signal or power rail against positive transients; for bidirectional protection, a different variant in the same family is needed.
What the ratings mean for the BOM
The 85.5V reverse standoff voltage is the maximum continuous DC voltage the TVS can block without conducting — a 48V or 60V rail sits comfortably below this threshold, but a 90V rail would keep the diode in breakdown during normal operation. The 95V minimum breakdown voltage defines where clamping starts; at 137V maximum clamping, the TVS holds the transient to a level that downstream components rated for 150V or higher survive. The -65°C to 150°C junction temperature range covers under-hood engine-bay ambient and outdoor telecom cabinet thermal extremes without derating concerns.
The DO-214AB (SMC) surface-mount package uses a standard footprint common across many TVS families — the copper pad area under the cathode tab sets the thermal resistance and should follow the recommended land pattern for full 1500W surge capability.
Sourcing and compliance
Target applications include automotive electronics (ECUs, sensors, infotainment) and telecom infrastructure (line cards, base stations) where transient protection is required.