These digits are frequently followed by (and also preceded by) additional letters in the images below, examples include “+B9106” (leading “+B”) and “9031KE” (trailing “KE”). Common formats YYWWīy far the most common format is YYWW: two digit year followed by two digit year.
In either situation, the last two digits should not exceed 52 (the number of weeks in a year). Failing this, try for three-digit codes, where the first digit is a possible year.
SAMSUNG SERIAL NUMBER DATE CODE CODE
For example, a code of “8049” in a 1985 product is unlikely to be a date in this case, 8049 is the model number (Intel MCS-48 family microcontroller). Ignoring prefix and suffix letters, start by looking for any four-digit numeric codes where the first two digits are a plausible year of manufacture (typically up to two or even three years before the product was assembled). In the case of Intel chips, the date code can be buried cryptically inside a much longer code. Because date codes are often anywhere from two to four characters, and either numeric or alphanumeric, it may not be obvious which code, or which part of which code, indicates the date of manufacture. These include model numbers, lot numbers, date codes, and other information.
When looking at an IC, there may be multiple codes present. The following terms are used: Y One-character year (typically 0–9, repeating each decade) YY Two-digit year (00–99) M One-character month W Week of month (1–6?) WW Week of year (01–52) Date code identification The diagrams are based on real ICs, but are simply examples, as presentation varies by size, shape and age of the IC and likely also by plant. The examples detailed on this page are not all confirmed some assumptions are made based on the correspondence of unconfirmed codes against clearer date codes of chips from other manufacturers or plants, and with verified manufacture dates. In most cases, finding manufacturer details on IC date codes is difficult or impossible, as they have changed practices and old ICs do not follow their modern marking practice. Jump to page content Main site navigation:
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