Electronics Forum | Sat Sep 29 02:58:18 EDT 2012 | ericrr
I tried to look for "H890" on Internet and went nuts, (Thanks to Google) I would think H890 is part of a diode manufacturer part number. Have you tested it for a diode function? or maybe you have this is why you want a replacement. Tantalum capacito
Electronics Forum | Tue Aug 30 11:23:07 EDT 2005 | g2garyg2
AJ, there are a variety of laser marking systems in the marketplace. Most use a CO2 laser to mark PCBs. Since laser life is directly related to power available vs power used, you should try to get a system with a 30 watt power rating. Most marking i
Electronics Forum | Thu Feb 17 22:30:09 EST 2000 | Dave F
Alberto: There's no rules, but it works sorta like this: RESISTORS Usually marked in ohms using a standard code: First two numbers is the value Third number is the multiplier 102 = 1.0 x 10� ohm = 1000 ohm = 1 kW CAPACITOR Usually not marked. When
Electronics Forum | Thu Feb 17 22:30:09 EST 2000 | Dave F
Alberto: There's no rules, but it works sorta like this: RESISTORS Usually marked in ohms using a standard code: First two numbers is the value Third number is the multiplier 102 = 1.0 x 10� ohm = 1000 ohm = 1 kW CAPACITOR Usually not marked. When
Electronics Forum | Thu Jan 03 10:43:48 EST 2002 | davef
Just thought of something. Sorry to be late with this. If you decide to dewarp these boards, consider: * Marking the boards perminantly with a code to help key your failure analysis people that a customer return was processed differently than other
Electronics Forum | Thu Jan 11 08:20:55 EST 2007 | davef
Marking * SMD marking list on http://www.tkb-4u.com is more update than "The SMD Codebook" on http://www.marsport.demon.co.uk/smd/smdcode.htm * http://www.marsport.demon.co.uk/smd/mainframe.htm * http://www.chipdocs.com/pcat/015/1124.html * http:/
Electronics Forum | Mon Jul 09 16:14:06 EDT 2007 | rgduval
A number of years ago in a previous life, we discussed laser marking 2-d matrix codes. We had a number of boards for customers that just were too populated to get any sort of a label onto. 2-D laser units were avaialable to work in line with our au
Electronics Forum | Thu Jul 25 15:18:18 EDT 2002 | stefwitt
You would have to tell us what machine brand you are using, as everyone has his own idea how to recognize X-outs. I find the auto-recognition very time consuming ( non-productive machine time ), unless the camera could recognize an image in one shot
Electronics Forum | Fri Mar 12 19:09:21 EST 1999 | Jess Baker
Manufacturers who have to mark barcodes onto PCB's without secondary application of pressure sensitive labels can etch it on, screen it on, inkjet it on, use laser marking, or a combination of those. Using a laser marker to write a code into a label
Electronics Forum | Wed Jul 14 17:03:15 EDT 1999 | John O'Brien
I'm doing some basic research in trying to understand the purpose and drivers that cause bar code (or other) marking of PCBs. I would appreciate any knowledgable volunteers willing to speak with me -your name, number, the best time for the call- or r
