1.5SMC110C — 94V bidirectional TVS, 1.5 kW peak pulse
It is a single-channel device in a DO-214AB (SMC) surface-mount package.
Clamping and breakdown — what the ratings mean for the rail
At the 10A peak pulse current (10/1000µs waveform), the voltage is clamped to 159.6V max. That 159.6V ceiling is what the downstream circuitry must survive — any component rated below that sees the full clamp voltage across its terminals during the surge. Bidirectional means the same clamping characteristic applies in both polarities — a single 1.5SMC110C protects a signal pair or a floating line without needing a second diode in anti-series.
Obsolete — sourcing the 1.5SMC110C today
Littelfuse has marked the 1.5SMC110C as obsolete. For a BOM line that calls out this exact part number, the supply path runs through independent distribution — surplus and new-old-stock inventory.