Top Mark Search
Top mark refers to the device identification mark found on Fairchild Semiconductor packages. It is used for determining whether a product is genuine and matches your order.
(Please enter at least 4 characters of a product number)
Certain top marks refer to manufacturing date and assembly plant, and their values are dynamic
This search tool uses symbols, e.g. &Y, to stand for dynamic top marks
In search results, static marks are displayed in plain text, while dynamic marks are displayed in bold font with short descriptive text in parenthesis as link to help webpage