Knowledge Base (Ethernet Switch/PHY, IP & Signal Integrity)
Overview
The following Frequency Asked Questions (FAQs) pertain to devices whose part numbers start with "VSC".
VSC wwww x yy - zz where:
wwww = base part number (3 or 4 numerical digits)
x = Pb-free indication ("X" denotes Pb-free 2nd level interconnect, "Y" denotes Pb-free 1st and 2nd level interconnect, and the absence of a letter denotes Pb)
yy = package code (2 letters)
zz = optional numerical suffix specifying temperature grade or specific performance characteristics.
You can determine the full ordering part number for a device by referring to the "Ordering Information" section of the device's datasheet, or by visiting http://www.microsemi.com/products/ethernet-solutions/ethernet-solutions and referring to the "Product Variant" table included on the landing page for each device.
1) For larger packages: VSC7216UI-02 YYWWZZAAR VITESSE
Line 1: Microsemi device part number (see https://ethernet.microsemi.com/knowledgebase/article/470 for more information)
Line 2: YY = Year the product was made, WW = Calendar week of the year the product was made, ZZ = Assembly lot code (Microsemi information), A = Flip chip bump location (Microsemi information), A = Assembly location (Microsemi information), R = Revision code
Format prior to August 2014: VSC7216UI-02 YYWWZZAAR VITESSE
Line 1: Microsemi device part number (see https://ethernet.microsemi.com/knowledgebase/article/470 for more information)
Line 2: YY = Year the product was made, WW = Calendar week of the year the product was made, ZZ = Assembly lot code (Microsemi information), AA = Assembly location (Microsemi information), R = Revision code
2) For smaller packages: DDRAYWWZZ
Line 1: DD = Device code (refer to device code listing here: https://ethernet.microsemi.com/knowledgebase/article/29628), R = Revision, A = Assembly Location
Line 2: Y is the year the product was made, starting with A = 2000, WW = Calendar week of the year the product was made, ZZ = Lot code...
General Topics
How do I determine the ordering part number for a "VSC" device?
While Microsemi devices are often referred to simply by their base part numbers consisting of three or four digits following the letters "VSC" (e.g. VSC8486), the full ordering part number for a device consists of a letter code and possibly a suffix number (e.g. VSC8486XJB-11) that may specify variables such as package style, temperature grade, Pb-free composition, and specific performance characteristics. The full structure of the ordering part number is:VSC wwww x yy - zz where:
wwww = base part number (3 or 4 numerical digits)
x = Pb-free indication ("X" denotes Pb-free 2nd level interconnect, "Y" denotes Pb-free 1st and 2nd level interconnect, and the absence of a letter denotes Pb)
yy = package code (2 letters)
zz = optional numerical suffix specifying temperature grade or specific performance characteristics.
You can determine the full ordering part number for a device by referring to the "Ordering Information" section of the device's datasheet, or by visiting http://www.microsemi.com/products/ethernet-solutions/ethernet-solutions and referring to the "Product Variant" table included on the landing page for each device.
How do I determine the date code and lot code of a "VSC" device?
Depending on the size of the package, the Microsemi device will have one of two possible marking schemes:1) For larger packages: VSC7216UI-02 YYWWZZAAR VITESSE
Line 1: Microsemi device part number (see https://ethernet.microsemi.com/knowledgebase/article/470 for more information)
Line 2: YY = Year the product was made, WW = Calendar week of the year the product was made, ZZ = Assembly lot code (Microsemi information), A = Flip chip bump location (Microsemi information), A = Assembly location (Microsemi information), R = Revision code
Format prior to August 2014: VSC7216UI-02 YYWWZZAAR VITESSE
Line 1: Microsemi device part number (see https://ethernet.microsemi.com/knowledgebase/article/470 for more information)
Line 2: YY = Year the product was made, WW = Calendar week of the year the product was made, ZZ = Assembly lot code (Microsemi information), AA = Assembly location (Microsemi information), R = Revision code
2) For smaller packages: DDRAYWWZZ
Line 1: DD = Device code (refer to device code listing here: https://ethernet.microsemi.com/knowledgebase/article/29628), R = Revision, A = Assembly Location
Line 2: Y is the year the product was made, starting with A = 2000, WW = Calendar week of the year the product was made, ZZ = Lot code...
What are the device codes for marking small packages?
A select group of Microsemi's "VSC" devices with small packages are marked with a two-letter code in the place of the actual full Microsemi part number, due to size constraints. Refer to the matrices below for a mapping between full Microsemi part number and two-letter device code.Code | Part |
ED | VSC7111XJW |
EE | VSC7224XJV |
EH | VSC7224XJV-01 |
EJ | VSC7223XJV |
EY | VSC7109XJW |
EZ | VSC7110XJW |
FA | VSC7112XJW |
FB | VSC7224XJV-02 |
FD | VSC8530XMW |
FE | VSC8530XMW-03 |
FF | VSC8531XMW |
FG | VSC8531XMW-03 |
FH | VSC8530XMW-04 |
FJ | VSC8531XMW-01 |
FK | VSC8531XMW-04 |
FL | VSC8530XMW-05 |
FM | VSC8531XMW-02 |
FN | VSC8531XMW-05 |