Electronics Forum | Sat Jan 14 11:22:04 EST 2023 | proy
Hello - I have seen this work effectively with a diode laser. I recently purchased a CO2 laser which I am certain would work. 10-20w diode lasers (used for marking and engraving) would likely work. The resist burns away, but the copper then dissipate
Electronics Forum | Tue Feb 12 10:33:45 EST 2002 | davef
IPC-4101 - Specification For Base Materials For Rigid And Multilayer Boards replaces MIL-P-13949 - Plastic Sheet, Laminated, Copper-Clad (For Printed Wiring) Taking a broader look, there are many �Obsolete MIL Document To Commercial Document� replac
Electronics Forum | Thu Mar 28 10:11:00 EST 2002 | cyber_wolf
I use a .059" copper clad sheet of FR4 that I bought from one of our board houses. It has not started to delaminate yet, and it has been through our ovens several hundred times. I am not sure what the life expectancy of a thermo-couple is. I am not 1
Electronics Forum | Wed Dec 25 19:36:57 EST 2002 | MA/NY DDave
Hi DaveF already gave you some fine answers. Yes I have seen CNC routed copper PWBs, and the literature is filled with many unique trace types including laying of fine wires on a board or embedded. You wanting .15mm, and I am guessing, low resistan
Electronics Forum | Thu Apr 05 09:17:40 EDT 2007 | itaig1
I have seen a method used where the pins on the connector are of the same materials as the thermocouple and the connector is connected via single strand wires of the same material to the PCB however the wires were spot welded to bare copper pads to r
Electronics Forum | Fri Nov 04 21:41:36 EST 2005 | mika
Have some mercy with my english. Russ is correct. We do simular things. The differents we do and this must be applied to who it concerns: We do ourself/or we often have requirements to the customer to layout the fid's to 1.5mm diameter. We have some
Electronics Forum | Thu Jul 13 22:20:38 EDT 2000 | Dave F
=10 mils larger than lead 3 silk screen legend text weight >=10 mils 4 pads >=15 mils larger than finished hole sizes 5 place through hole components on 50 mil grid 6 no silk screen legend text over vias (if vias not solder masked) or holes 7 so
Electronics Forum | Thu Nov 16 11:45:15 EST 2006 | markb
I still think the best bet is probably an SMT pre-bake operation to ensure that there is no moisture in the board. Vapor pressure is usually the leading cause for delamination, so removing the source should significantly help out. Unfortuantely, pr
Electronics Forum | Sun Jun 24 12:45:51 EDT 2007 | Frank
I never thought about painting our copper piping. I always thought the patina that covers the pipes adds a bit of history and class, ya know an antique-feel, to the shop. I was in a shop years ago that used PVC piping for their air. From looking a
Electronics Forum | Thu Jun 17 16:18:22 EDT 1999 | Earl Moon
| | Has anyone had problems with the Weller MT 1500 IRON/TIP solder station? | | Please advise your problem and resolution. | | | | ddj | | 6/16/99 | | | I don't like to use the needle tips (MT2 series), but the rest of the tips work fine. The MT2
