Do most folks just use the lot number supplied by the supplier as their lot number? Or do you combinine it with something of your own?
For example, say we buy custom PCBs and the board house provides their lot number on the CofC supplied with the shipment. But its not uncommon for the board house to make qty’s for multiple of our releases.
Like if we had a PO for 1000 pieces, split over 4 release (each a month a part). The board house might make 500, calling them all
Lot 101. Then ship us 250 (of Lot
101) this month. Next month they ship us another 250 (also from
If we use just their lot number, there’s no way to tell which receipt they were from (the first or second month).
If we add a suffix to their Lot number (say YYWW), we’d have some inventory with lot
101-2105 and others of