SI4438 Datasheet, PDF (42/44 Pages) Silicon Laboratories – Low active power consumption

Si4438
13. Top Marking
13.1. Si4438 Top Marking
13.2. Top Marking Explanation
Mark Method
YAG Laser
Line 1 Marking
Line 2 Marking
Line 3 Marking
Part Number
TTTTT = Internal Code
YY = Year
WW = Workweek
44381C = Si4438 Rev 1C¹
Internal tracking code.²
Assigned by the Assembly House. Corresponds to the last
significant digit of the year and workweek of the mold date.
Notes:
1. The first letter after the part number is part of the ROM revision. The last letter indicates the firmware revision.
2. The first letter of this line is part of the ROM revision.
42
Rev 1.0