Transient protection for 128 V rails
The 1.5SMC150A R7G: Its 128 V reverse standoff voltage (VRWM) means it sits across a 128 V DC bus without conducting in normal operation, only clamping when a transient exceeds the 143 V minimum breakdown threshold. The junction operates from -55°C to 150°C, covering industrial and automotive under-hood ambient ranges without derating concerns at the board level.
DO-214AB footprint and board integration
The tape-and-reel packaging (R7G suffix) feeds standard 8 mm or 12 mm carrier pockets for automated pick-and-place. MSL level is typically level 1 for this package construction, so no moisture-sensitive bake is required before reflow if the reel seal is intact.
Active lifecycle and sourcing posture
Taiwan Semiconductor Corporation lists the 1.5SMC150A R7G as Active in production.