User guide

Part Numbers
E-2: Parts and Part Numbers
• The letter portion of the part number (A to Z, but not I, O, Q, or X) is used for
all major versions, including standard parts, custom parts, and purchased
parts. A new part number needs to be pulled to update a Z-level major version.
• An internally visible, two-digit, numeric code (00 - 99) is used for all minor
revisions; this code is contained in an attribute field in SAP and is not
embedded in the part number. A new part number needs to be pulled to update
a 99-level minor revision.
Note:
You will see this two-digit code in various other places, such as in
/dra/
2brel
subdirectories, e.g., 300123-A.00, when you take out a new part
number, or when you receive email notification of a new part number.
The rules for changing revisions are outlined in Spec 115067-A (published
10/06/96, originator: Dana Lavoie), except that the major revision is now called a
major
version
in order to differentiate between major and minor revisions.
Legacy Part Numbers
Many variations on the common part number are found in Bay Network’s legacy.
Xylogics, for example, used a part number of the form 123-456-789. The PCN
process supports any type of numbering scheme as long as the number is in SAP.
The most common types of legacy part numbering are for Wellfleet and
SynOptics.
Wellfleet
Wellfleet’s 6-digit part numbers ranged from approximately 100000 to 119000. At
around 114500, they added:
•
embedded major rev numbers
as single letters, producing, for example,
1462323-A (if the part was custom-made)
•
minor rev numbers
as two digits, producing, for example, 110123-ARev01
All parts had minor revs, but not necessarily major revs. (This is still true.)
SynOptics
SynOptics had numbers such as the following:
• 119-123-A, where the 119 portion is a
class code
, and the -A is a major
revision (as it was for Wellfleet).