1500W bidirectional TVS for DC rail clamping
The 1.5SMC10CA R7G: Its 108A peak pulse current (Ipp) and 14.5V maximum clamping voltage define the surge it can shunt without letting the protected circuitry see a damaging overvoltage. The 8.55V typical reverse standoff voltage means the TVS sits across a 5V or 8V rail without conducting leakage — it only starts clamping when the transient exceeds the 9.5V minimum breakdown threshold.
Housed in a DO-214AB (SMC) surface-mount package, the same footprint used across the 1.5SMC family. The wide copper pad under the cathode tab (for unidirectional variants) is absent here — the bidirectional die sits between two equal terminals, so the thermal path is through both leads into the PCB copper. A 1 oz copper pour of at least 300 mm² per terminal keeps the junction temperature rise within the -55°C to 150°C operating range during repetitive surges. Supplied in tape and reel (TR) — the R7G suffix indicates the packaging code. Reels are moisture-sensitive; store them dry per J-STD-020, and bake before reflow if the floor life has been exceeded.
No official second-source or pin-compatible alternative is documented, but the DO-214AB footprint is shared by many 1.5kW TVS from other manufacturers — a parametric cross-check against the 14.5V clamp and 108A Ipp is straightforward.