The 1.5SMC15A V7G: Breakdown occurs at 14.3 V minimum, ensuring the diode remains off during normal operation and only clamps when a transient pushes the line above that level. With a clamping voltage of 21.2 V at 74 A, the protected circuit sees no more than 21.2 V across its terminals during the surge event — within the abs-max rating of most 12 V-rated ICs.
Package and board integration
Housed in a DO-214AB (SMC) surface-mount package, the footprint matches standard SMC land patterns — the cathode band marks the unidirectional orientation.