Does UL or any other agency require the PCB vendor marking be in copper and not silkscreen?

--
Scott Buscomb, Senior Designer
[log in to unmask]
Techsonic Industries
1111 Alderman Dr. Ste. 250
Alpharetta, GA 30005
770 475-3020 ext.1032

Taylor, Chris H. wrote:

> For a commercial application, Bruce I typically use the following:
> MARK OR STAMP REVISION LEVEL AND VENDOR TRACABILITY IDENT IN LOCATION
> SHOWN USING WHITE EPOXY BASE MARKING INK WITH .12 +/- .02 HIGH SINGLE
> STROKE GOTHIC CHARACTERS. MARKING SHALL NOT EXTEND ON TO ANY EXPOSED
> SOLDER LANDS OR CONDUCTORS.
> Chris Taylor
> Senior Printed Circuit Designer
> LXE, Inc.
> 125 Technology Parkway
> Norcross, GA 30092
> voice: (770) 447-4224 X3242
> fax: (770) 447-6928
> e-mail: [log in to unmask]
>
> >----------
> >From:  Bruce C. Rietdorf D613 x5150 MS10-61[SMTP:[log in to unmask]]
> >Sent:  Tuesday, January 06, 1998 8:35 AM
> >To:    [log in to unmask]
> >Subject:       [DC] Marking per MIL-STD-130
> >
> >============================================================================
> >Date:    6-JAN-1998 08:33:12.79
> >Name:   Bruce C. Rietdorf D613 x5150 MS10-61
> >From:   MOST::MRGATE::"MRS::SN_L=HOSTNODE::SN_U=BCRIET"
> >To:     MOST::INTERNET
> >Subj:   Marking per MIL-STD-130
> >============================================================================
> >
> >From:   NAME: Rietdorf,Bruce  <SN_U=BCRIET@SN_L=HOSTNODE@MRS@MOST>
> >To:     NAME: INTERNET.THE <INTERNET@MOST@MRGATE@MOST>
> >
> >DATE : January  6, 1998
> >TO   : THE INTERNET
> >FROM : Bruce C Rietdorf
> >SUBJECT : Marking per MIL-STD-130
> >
> >SMTP%"[log in to unmask]"
> >
> >Our processes require that a printed wiring board supplier mark the revision
> >level and their tracability marking on each board. This marking must be
> >durable enough to withstand internal assembly processes (chemical cleanings,
> >solder baths, etc).
> >
> >Could someone please assist me on what type of notes are used on the
> >procurement drawing to achieve this on non-military products? I'm aware that
> >the Military require this marking to be per MIL-STD-130.
> >
> >Thanks in advance,
> >
> >Bruce Rietdorf
> >Drafting Services
> >Raytheon Systems Company
> >(219) 429-5150
> >[log in to unmask]
> >
> >
> >
> >
> >
> >
> >      Bruce C Rietdorf
> >
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