The SMCJ6.0A-13: The minimum breakdown voltage is 6.67 V, so the device starts conducting just above the 6 V standoff level — it stays off during normal operation and only shunts when a transient pushes the line above that threshold.
The base product number is SMCJ6.0, so the -13 suffix denotes the packaging variant (Tape & Reel). Any cross-reference within the SMCJ6.0 family shares the same die and electrical characteristics.
