Hi Tom,

You can't mix leaded and leadfree parts, so you need to have different internal part #'s for them. Our PN scheme has a suffix, such as xxxxx-001. For the same PN in leadfree, it would be xxxxx-101. If we were to find that one of our old part #'s had three manufacturers on the AVL and they all turned out be leadfree, we would still create the new part # for them. For an assembly that will eventually become leadfree, we have created an interim BOM, and replace the leaded parts with leadfree ones as each part is qualified. Once the whole BOM has been qualified, the whole board assembly will change, once again using the xxxxx-001 to xxxxx-101 format. This way, there will be no MRP demand for a part until we decide that we are ready to build in volume. In the meantime, prototypes are handled buy buying or sampling small quantities at a non-production revision, with no MRP requirements involved, and the leadfree parts are kept in a separate room from the leaded parts.

Hope that helps.

Paul Black 
Manufacturing Engineer 
Kronos 
E-mail: [log in to unmask] 


-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Tom Glum
Sent: Monday, November 21, 2005 1:15 PM
To: [log in to unmask]
Subject: [TN] Part number controll for RoHS


How are companies and/ or individuals handling the part number control
(MRP) for leaded and leadfree parts?  Specifically the same part in 2
different alloys.  Thanks you in advance for your ideas.

 

Tom Glum

Director of Manufacturing

precision Wave Corp

7899 Lexington Dr. Suite 102

Colorado Springs, CO 80920

[log in to unmask]

719-3250515

 


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