70V rail clamp with 1500W surge rating
Its reverse standoff voltage of 70V sets the normal operating level; the device remains transparent until the transient exceeds the breakdown threshold. Rated for 1500W peak pulse power under the 10/1000µs waveform, the part clamps at 125V maximum when conducting 12A peak pulse current. That clamping voltage is the voltage the protected circuitry must survive — a key number for the downstream component voltage rating selection.
DO-214AB footprint and temperature range
The junction temperature range spans -65°C to 150°C, covering outdoor telecom cabinets, industrial enclosures, and under-hood electronics where ambient temperatures can push 85°C and above. The base product number is SMCJ70; the suffix denotes the lead-free, RoHS-compliant finish.
Active production — no LTB on record
Submit an RFQ against your BOM quantity; the part is sourced to order through our distribution channel.