Part identity and protection role
With a reverse standoff voltage of 5.2V and a maximum clamping voltage of 16V at peak pulse current, it protects 3.3V and 5V logic buses from ESD and surge events up to 300W peak pulse power. The two independent channels in a single SOT-23-3 package replace two discrete protection diodes, saving board area in space-constrained ECU and sensor module designs.
The 300W peak pulse power rating (8/20µs waveform) translates to an 18A peak pulse current capability, verified against both the 8/20µs and 10/1000µs pulse shapes. This margin handles the high-energy transients typical of inductive load dump and ISO 7637-2 pulses on automotive 12V battery-referenced lines. For a 5V CAN or LIN bus, the 16V clamp gives a comfortable 3x headroom above the operating rail, keeping the downstream transceiver within its absolute maximum ratings during a coupled surge.
AEC-Q101 and 150°C junction — the automotive qualification
That 150°C TJ ceiling matches the underhood and engine-compartment temperature profiles required by most Tier-1 automotive OEMs for electronic control units and sensor modules. The TRANSIL™ series is designed for zero-defect manufacturing with PPAP documentation available through the supply chain, so an OEM auditor can trace the qualification pedigree. The active lifecycle status means no end-of-life notice is pending — this part is current-production and available for new program insertions.
SOT-23-3 footprint and mounting
The ESDA6V1LY is housed in a standard SOT-23-3 (TO-236-3 / SC-59) surface-mount package, compatible with the ubiquitous three-lead footprint used by most small-signal transistors and diodes. The 'LY' suffix in the order code indicates the lead-free, RoHS-compliant finish.