SI4736-B20 Datasheet, PDF (31/38 Pages) Silicon Laboratories – BROADCAST WEATHER BAND RADIO RECEIVER

8. Package Markings (Top Marks)
8.1. Top Mark
Si4736/37/38/39-B20
3620
BTTT
YWW
3720
BTTT
YWW
3820
BTTT
YWW
3920
BTTT
YWW
8.2. Top Mark Explanation
Mark Method:
Line 1 Marking:
Line 2 Marking:
Line 3 Marking:
YAG Laser
Part Number
36 = Si4736, 37 = Si4737, 38 = Si4738, 39 = Si4739
Firmware Revision
20 = Firmware Revision 2.0
Die Revision
B = Revision B 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
31