8.2 36-Pin QFN (Legacy)
USB251xB/xBi
36-Lead QFN (6x6x0.9 mm)
Example
RYYUYWSWBWW2N5-NA1xN2BPAi10
VCOO
e3
PIN 1
DU155S00B1121-A521324APB1i0
ASETW
e3
PIN 1
Legend: x
USB251xB version (2 = 2-port, 3 = 3-port, 4 = 4-port)
i
Temperature range designator: (Blank = commercial, i = industrial)
R
Product revision
YY Year code (last two digits of calendar year)
WW Week code (week of January 1 is week ‘01’)
A2P10 Internal code
NNN Alphanumeric traceability code
A
Fixed character
V
Plant of assembly
COO Country of origin
e3
Pb-free JEDEC® designator for Matte Tin (Sn)
Note:
In the event the full Microchip part number cannot be marked on one line, it
will be carried over to the next line, thus limiting the number of available
characters for customer-specific information.
* Standard device marking consists of Microchip part number, year code, week code and traceability code.
For device marking beyond this, certain price adders apply. Please check with your Microchip Sales Office.
For QTP devices, any special marking adders are included in QTP price.
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DS00001692C-page 47