INK
in [Design]
|
Prev: generator hook up
Next: toroidal core for high current
From: whit3rd on 19 Jul 2010 10:10 On Jul 19, 12:55 am, Robert Baer <robertb...(a)localnet.com> wrote: > For at least 30 years or more, a special ink has been used in the > electronics industry for labeling transistors and ICs. > That ink cannot be dissolved off the part It's more like paint than ink. The older units had light markings on dark, the pigment was aluminum (and it comes off with a little NaOH solution). New ICs have fine markings with no color contrast, probably laser etched.
From: mpm on 19 Jul 2010 18:22 On Jul 19, 2:55 am, Robert Baer <robertb...(a)localnet.com> wrote: > For at least 30 years or more, a special ink has been used in the > electronics industry for labeling transistors and ICs. > That ink cannot be dissolved off the part, and it seems to not change > color even at 230C or so. > What type of ink is that, and what are the sources; eg: can anyone > provide stocking disties, brand(s) part numbers, etc? > Thanks. Sounds like you want an epoxy-based ink. They also make them in high-temp. Try a search on ThomasNet.com -mpm
From: Robert Baer on 20 Jul 2010 01:38 Baron wrote: > Robert Baer Inscribed thus: > >> For at least 30 years or more, a special ink has been used in the >> electronics industry for labeling transistors and ICs. >> That ink cannot be dissolved off the part, and it seems to not >> change >> color even at 230C or so. >> What type of ink is that, and what are the sources; eg: can anyone >> provide stocking disties, brand(s) part numbers, etc? >> Thanks. > > Hi Robert, > Are you sure that its ink and not Laser etched ! > Lasers were not used in the 1970 to (maybe) 1990 region. In any case, i need to use ink as laser marking is too damn expensive.
From: Robert Baer on 20 Jul 2010 01:40 PeterD wrote: > On Mon, 19 Jul 2010 10:53:30 +0100, Baron > <baron.nospam(a)linuxmaniac.nospam.net> wrote: > >> Robert Baer Inscribed thus: >> >>> For at least 30 years or more, a special ink has been used in the >>> electronics industry for labeling transistors and ICs. >>> That ink cannot be dissolved off the part, and it seems to not >>> change >>> color even at 230C or so. >>> What type of ink is that, and what are the sources; eg: can anyone >>> provide stocking disties, brand(s) part numbers, etc? >>> Thanks. >> Hi Robert, >> Are you sure that its ink and not Laser etched ! > > Ink, stamped on... Yes...read: WHAT KIND, SOURCE(s)...
From: Robert Baer on 20 Jul 2010 01:44
dcaster(a)krl.org wrote: > On Jul 19, 3:55 am, Robert Baer <robertb...(a)localnet.com> wrote: >> For at least 30 years or more, a special ink has been used in the >> electronics industry for labeling transistors and ICs. >> That ink cannot be dissolved off the part, and it seems to not change >> color even at 230C or so. >> >> Thanks. > > Try searching on acid etch ink. That is what was used on aerospace > parts when I retired. > > Dan > Hmm..not what i was looking for; just a "plain" ink - perhaps a special epoxy ink?? OOOOh; that GooGulls better. Thanks. |