Obsolete — planning the BOM transition
No official successor is named in the available records, so a pin-compatible or functionally equivalent part must be qualified for new designs or last-time buys. For existing BOM lines, sourcing through independent distribution is the practical path. We can source the CM1213A-02SO against an RFQ — confirm the quantity and date-code window, and we will quote from available inventory or open-market stock.
This is a Steering (Rail to Rail) TVS diode array — it clamps transients on high-speed data lines by steering the surge current to the supply rail or ground, rather than shunting it to ground through a single avalanche junction. That topology keeps the clamping voltage low and the capacitance small, which is why you see these on HDMI, USB 2.0, and LVDS interfaces. The reverse standoff voltage is 3.3V, so it sits directly on a 3.3V logic rail without conducting during normal operation. When a transient hits, the clamping voltage is 10V typical — low enough that a 3.3V-rated ASIC or FPGA I/O bank survives the event. Two unidirectional channels protect two signal lines, each referenced to the same rail. The package is SC-74, a 6-pin SOT-457 derivative with 0.95 mm pitch — easy to hand-solder or rework, and the footprint is shared with many other dual-channel TVS arrays.
Not rated for automotive or extended-temperature environments. Surface-mount package — SC-74 / SOT-457.