Rick,

 

 One BOM splits many ways:

 

1.    Purchasing needs a purchase BOM and this might be multi level. Some
PCB components (like 1 x 6 025 sq posts) get made from other purchased
parts.



2.    Pick and Place (PnP) operators need a list of stuff that goes on the
machines.



3.    Some parts can not be machine placed, these need to show up after PnP
before reflow.



4.    Thru Hole parts need routing to thru hole assembly stations.



5.    PCB Designers need to know which parts are on the schematic and which
are not.



6.    Everyone needs to know which parts are NO STUFF ant this affects the
above BOMs.

 

In general I have Purchasing BOMs with the assembly BOM broken into
different section. Machine, SMT HAND, THT, No Stuff.

 

Bob K.

 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Smith, Rick
Sent: Tuesday, November 30, 2010 10:30 AM
To: [log in to unmask]
Subject: [TN] Separate BOM's for Same Assembly

 

Hi Folks,

 

Engineering currently produces two separate BOM's for a single board
assembly, 1 for SMD's and the other for PTH parts which are subsequently
entered into the ERP system by Doc Control. Without going into a lot of
detail I understand the reasons for the separate BOM's are related to
production logistics, routings and cost.

 

I am told this is typical in the industry for OEM's and would like to either
corroborate or debunk this with your responses. I am trying to determine if
the 2 BOM system is necessitated by ERP limitations or the result of a
misguided approach to process development.

 

Does anyone use the two BOM approach for a single board assembly?

 

Thanks!

 

Regards,

Rick

 

 

______________________________________________________________________

This email has been scanned by the MessageLabs Email Security System.

For more information please contact helpdesk at x2960 or [log in to unmask] 

______________________________________________________________________

 

---------------------------------------------------

Technet Mail List provided as a service by IPC using LISTSERV 15.0

To unsubscribe, send a message to [log in to unmask] with following text in

the BODY (NOT the subject field): SIGNOFF Technet

To temporarily halt or (re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL)

To receive ONE mailing per day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest

Search the archives of previous posts at: http://listserv.ipc.org/archives

Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16
for additional information, or contact Keach Sasamori at [log in to unmask] or
847-615-7100 ext.2815

-----------------------------------------------------



______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------