Transient protection for 128 V rails
The 1.5SMC150CA_R1_00001: It belongs to the 1.5SMC series, a standard 1500 W peak pulse power family in the DO-214AB (SMC) surface-mount package.
Clamping voltage and pulse current
Bidirectional clamping means the same device protects against both positive and negative transients, making it a single-component solution for AC-coupled lines or bipolar DC rails without needing series diodes. The operating temperature range from -55°C to 150°C covers the full industrial and automotive ambient envelope — the junction temperature stays within limits even when the TVS absorbs repetitive pulses in a high-temperature enclosure.
Surface-mount footprint and supply format
Housed in the DO-214AB (SMC) package, this TVS shares the standard 0.260" x 0.110" footprint common to the 1.5SMC family — the same pad layout works for any voltage variant in the series, simplifying BOM consolidation across multiple rail voltages. Supplied in Tape & Reel (TR) or Cut Tape (CT) formats, it suits both high-volume pick-and-place assembly and prototype or rework quantities. The surface-mount package eliminates through-hole hand-soldering steps in production.
The DO-214AB package and 1.5SMC series are widely second-sourced across the TVS market, providing alternative options for dual-source qualification if needed.