Hello,

This is my first posting here, so please bear with me as I attempt to post my question.

I am relatively new to PPAP and PSW and work with my SQA department for PSW issues. When we started purchasing electronic components, our headquarters came up with an innovative numbering system that is creating a headache for us. We are a factory that is connected to our corporate division for design and support.

They use a 9 digit part number to specify the FFF of the component. This number is usually the same as the drawing number with the specifications for this part. However, to enhance global purchasing, when a specific manufacturer and mfr part number is picked, a 10th digit is added to the 9 digit number to indicate the manufacturer and an 11th digit is added to indicate the packaging (7" tape/reel vs 13" vs ammo-pak, etc). This combined 11 digit part number is used as our inventory control number as well as for purchasing from our suppliers. The suppliers are required to label their packaging with the same 11 digit part number. (e.g. 7G9781234 vs 7G978123456 where 5 is the mfr and 6 is packaging.)

The problem is that our corporate SQA says that aside from the drawing number to be shown on the PSW, the our part number should only be the 9 digit since the supplier must PPAP to the drawing (9 digit only). My issue is that the supplier sells us the parts using 11 digits since our PO have the 11 digits, therefore the PSW the supplier provides should reflect the 11 digit part number as sold to us.

Therefore, we have 2 sides to this question: 1) only refer to the 9 digit number since that is what is on the drawing or 2) refer to the 11 digit number since that is how the purchasing is handled.

Any opinions?

Hello,

This is my first posting here, so please bear with me as I attempt to post my question.

I am relatively new to PPAP and PSW and work with my SQA department for PSW issues. When we started purchasing electronic components, our headquarters came up with an innovative numbering system that is creating a headache for us. We are a factory that is connected to our corporate division for design and support.

They use a 9 digit part number to specify the FFF of the component. This number is usually the same as the drawing number with the specifications for this part. However, to enhance global purchasing, when a specific manufacturer and mfr part number is picked, a 10th digit is added to the 9 digit number to indicate the manufacturer and an 11th digit is added to indicate the packaging (7" tape/reel vs 13" vs ammo-pak, etc). This combined 11 digit part number is used as our inventory control number as well as for purchasing from our suppliers. The suppliers are required to label their packaging with the same 11 digit part number. (e.g. 7G9781234 vs 7G978123456 where 5 is the mfr and 6 is packaging.)

The problem is that our corporate SQA says that aside from the drawing number to be shown on the PSW, the our part number should only be the 9 digit since the supplier must PPAP to the drawing (9 digit only). My issue is that the supplier sells us the parts using 11 digits since our PO have the 11 digits, therefore the PSW the supplier provides should reflect the 11 digit part number as sold to us.

Therefore, we have 2 sides to this question: 1) only refer to the 9 digit number since that is what is on the drawing or 2) refer to the 11 digit number since that is how the purchasing is handled.

Any opinions?

It sounds like this is an internal issue and does not involve an external customer. If that is the case, you can really make your own rules on how to handle this. Here are a couple of options, but you don't have to stick to these:

- First of all, there is no rule that says the drawing number has to match the part number. I feel that it is important that the PSW part number match the PO part number. This avoids confusion for all parties. PSW/PPAP documents normally provide a space for the drawing number because they don't always match.

- Second, and I have seen this work, is to number your drawings like this (7G9781234XX) where XX stands for the supplier/packaging rules that you use. In the case that I have seen, the supplier/packaging options were listed on the print. If you have a lot of drawings, this will not be a popular option.

It sounds like this is an internal issue and does not involve an external customer. If that is the case, you can really make your own rules on how to handle this. Here are a couple of options, but you don't have to stick to these:

- First of all, there is no rule that says the drawing number has to match the part number. I feel that it is important that the PSW part number match the PO part number. This avoids confusion for all parties. PSW/PPAP documents normally provide a space for the drawing number because they don't always match.

- Second, and I have seen this work, is to number your drawings like this (7G9781234XX) where XX stands for the supplier/packaging rules that you use. In the case that I have seen, the supplier/packaging options were listed on the print. If you have a lot of drawings, this will not be a popular option.
Yes. The standard warrant form has two spaces--one for part number, and one ("Shown on Drawing No.") for the drawing number, if it's different from the part number. The rub is that everything should be connected; if you look up a drawing by drawing number, there should be part number references on the drawing.

Yes! The devil is always in the details. You need a cross-index (computers are wonderful for this!) so someone can readily identify the subject part.

"Dash numbers" (alphanumeric following a dash on the basic number) have a long, tried, and true history of valid use throughout industry for a variety of functions from identifying finish to alternate manufacturer or supplier. Hence P/N 123-xyz and P/N 123-abc might be identical in form, fit, and function, but labeled for tracing purposes to identify two different suppliers.

Organizations which use such schemes usually have an attachment or note on the document which explains the scheme. I recall seeing such schemes on documents dating back to the 1930's.

I had a similar problem where I had to PPAP to an assembly drawing 2 parts that each were identical to the assembly but functional different.
There was no call out on the drawing to the functions-part number of the customer.
We knew about the part numbers from the PPAP order.
AS JSW05 said we used the 2 different blanks in the PSW. The problem was that the SQE said he could not approve because there was no call out and he approved according to the drawing number of the first part and then did not know what toi do with the second part.
Purchasing could not order as the part number was not approved.