Jim Ennis asked: >A current discussion is whether we need to mark 0603's. It is *possible*, >but at extra cost and it's not really practical from a mfg standardpoint: > You can't read them without magnification. Does Bellcore require this? Kinda. TR-NWT-000078, Issue 3, (December 1991) says: "2.1.15 (R) Pieceparts, components, wire and cable shall, where practical be so marked as to allow traceability to their original manufacturer; this requirement does not apply to structural metalwork and machined hardware such as screws. Such markings shall not be obliterated or removed except by the original manufacturer to remark incorrectly marked parts. On a temporary basis, part markings that fail to withstand assembly processing may be remarked with the original component markings. With the exception of markings identifying program related information for programmable devices such as Erasable Programmable Read-Only Memories (E-PROMs), additional markings (such as labels added in the equipment manufacturing process) shall not obscure the original manufacturer's markings" It does say "where practical", so maybe you can get a ruling from your resident inspector type. IMO, it is not. The markings on these small parts are so obscure, and they really don't tell you the manufacturer anyway... regards, Jerry Cupples Interphase Corporation Dallas, TX USA http://www.iphase.com