SI4707-B20 Datasheet, PDF (23/30 Pages) Silicon Laboratories – WEATHER BAND AND SAME DATA RECEIVER

8. Package Markings (Top Marks)
8.1. Top Mark
Si4707-B20
0720
BTTT
YWW
8.2. Top Mark Explanation
Mark Method:
Line 1 Marking:
Line 2 Marking:
Line 3 Marking:
YAG Laser
Part Number
07= Si4707
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
significant digit of the year and workweek of the mold date.
Rev. 0.8
23