What this cap fits and what the lifecycle flag means
The A3XL6NB is a 60 mm mushroom-head pushbutton cap from the Omron A3 series, black in colour — a replacement cap for the A3 pushbutton range. Its lifecycle stage is marked eol_hot, meaning the manufacturer has ended production and remaining stock is being consumed. For a line-down spare or a BOM freeze, this part is sourced through independent surplus channels — quantities are confirmed at RFQ, not held on the shelf.