Obsolete — sourcing the 1.5SMC20 for your BOM
For existing BOM lines that require this specific order code, sourcing is through independent distribution channels.
Protection envelope — what the ratings mean
This is a Zener-type TVS diode from the 1.5SMC series, rated for 1500W (1.5kW) peak pulse power under a 10/1000µs waveform. The 1500W rating defines the surge energy it can safely clamp — a key parameter for selecting the right protection device for a given transient threat level. It is a single unidirectional channel, meaning it protects one DC line against positive transients. For AC or bidirectional protection, two devices or a bidirectional TVS would be needed.
Package and board-fit
Housed in a DO-214AB (SMC) surface-mount package, also referred to as the SMCJ footprint. This is a standard, hand-solderable SMD package — a hot-air rework station or even a fine-tipped iron with careful technique can handle it for prototyping or small-batch rework.