Si554

Rev. 1.1

13

6. Top Marking

6.1. Si554 Top Marking

6.2. Top Marking Explanation

Line

Position

Description

1

1–10

“SiLabs”+ Part Family Number, 554 (First 3 characters in part number)

2

1–10

Si554: Option1+Option2+Freq(7)+Temp

Si554 w/ 8-digit resolution: Option1+Option2+ConfigNum(6)+Temp

3

Trace Code

Position 1

Pin 1 orientation mark (dot)

Position 2

Product Revision (D)

Position 3–6

Tiny Trace Code (4 alphanumeric characters per assembly release instructions)

Position 7

Year (least significant year digit), to be assigned by assembly site (ex: 2007 = 7)

Position 8–9

Calendar Work Week number (1–53), to be assigned by assembly site

Position 10

“+” to indicate Pb-Free and RoHS-compliant