SI4736-C40-GUR Datasheet, PDF (33/42 Pages) Silicon Laboratories – BROADCAST AM/FM RADIO RECEIVER

10. Package Markings (Top Marks)
10.1. Si4736/37/38/39 Top Mark (QFN)
Si4736/37/38/39-C40
3640
CTTT
YWW
3740
CTTT
YWW
3840
CTTT
YWW
3940
CTTT
YWW
10.2. Top Mark Explanation (QFN)
Mark Method:
Line 1 Marking:
Line 2 Marking:
Line 3 Marking:
YAG Laser
Part Number
Firmware Revision
Die Revision
36 = Si4736, 37 = Si4737, 38 = Si4738, 39 = Si4739
40 = Firmware Revision 4.0
C = Revision C Die
TTT = Internal Code
Internal tracking code
Circle = 0.5 mm Diameter Pin 1 Identifier
(Bottom-Left Justified)
Y = Year
WW = Workweek
Assigned by the Assembly House. Corresponds to the last sig-
nificant digit of the year and workweek of the mold date.
Rev. 1.0
33