1500 W peak pulse — what that means on the bench
The 1.5SMC130CA-M3/9AT: That 1500 W rating means it can clamp a transient that dumps that much energy without failing — useful for protecting a 111 V rail where the diode starts conducting at 124 V (breakdown min) and holds the voltage to 179 V max at 8.4 A peak pulse current.
Package and rework — DO-214AB (SMC)
Housed in a DO-214AB (SMC) surface-mount package, also known as SMCJ. Pin 1 orientation is marked by a cathode band on the body — on a bidirectional device that band is still present but both directions clamp identically.
