TVS selection for the 85.5V rail
The 1.5SMC100CA: The bidirectional channel means it can clamp both positive and negative surges, making it suitable for AC lines or bipolar signal buses where polarity is not fixed.
Temperature range and board integration
Housed in a DO-214AB (SMC) surface-mount package, the footprint matches standard 1500W TVS layouts and is compatible with reflow soldering profiles used for lead-free assembly. The device does not include power line protection features — it is a general-purpose transient suppressor for signal and low-power DC/AC rails, not a primary mains surge protector.