BORN

BORN is the catalog name for Shenzhen Bornsun, a maker of protection and rectifier discretes whose profiles here span two functions in three small bodies. The DSS34 is a Schottky rectifier in SOD-123FL whose voltage row the maker’s own sheet leaves partly unresolved across revisions — its part page states the boundary instead of printing a guessed figure. The PESD3V3L1BA-N is a bidirectional ESD diode in SOD-323 for 3.3 V-class lines, marked 03B, clamping at 24 V on a 480 W peak-pulse rating. The PESD3V3S1BA-N is its SOD-523 sibling, marked CT, with roughly half the junction capacitance and an 11 V maximum clamp. Two habits matter here. Its PESD stems are shared with other makers’ families of the same name, and the tables are not interchangeable. And BORN publishes no per-model lifecycle grading on the sheets used, so the part pages claim none.

Sourcing notes for BORN parts. Always quote the complete manufacturer ordering code — package, temperature grade, speed or accuracy grade, and packing (reel, tube or tray) all change availability and price, and suffixes are where most mismatches happen. Check the lifecycle status on the manufacturer site before committing to a multi-year build; parts flagged not-recommended or obsolete need a last-time-buy plan or a verified alternate lined up early. With every offer, request traceability documents — date code, lot code and original packing — and confirm the inspection steps your supplier applies to high-risk lots.