Electronics Forum | Fri Aug 23 01:40:14 EDT 2019 | sssamw
Such huge difference between low and high thickness will definitely cause paste accumulation on the squeegee side. Normally is 2 mil max difference.Yes, dispense maybe help for thicker paste or print two times.
Electronics Forum | Mon Aug 12 12:16:25 EDT 2019 | SMTA-Martial
Hi, We are using a 15mils to 5 mils step stencil with a metal blade. The 15mils area the surface is smooth and polish and in the 5mils area the surface is rough and porous because of the laser process. In the 5 mils area where there is no aperture t
Electronics Forum | Mon Aug 19 13:47:45 EDT 2019 | emeto
Forget about a stencil here. The only solution I have for you is to dispense this paste. There are some super cool Jet printers out there that will do the job.
Electronics Forum | Mon Aug 12 21:54:33 EDT 2019 | davef
I've never seen successful printing with a step as deep as you seem to be saying. The keep out would have to be jigundous!!!! SMTnet Technical Library: https://smtnet.com/library/files/upload/Step-Stencils-laserjob.pdf I'd guess * Maximum step
Electronics Forum | Wed Nov 06 13:04:12 EST 2013 | cyber_wolf
How do you feel about plasma arc accumulators ?
Electronics Forum | Mon Mar 05 18:04:43 EST 2007 | stepheniii
If it might go in a clean room you will want to look at if the system cuts the paper tapes. In the old days there was no vacuum at the cutter and around the machine would accumulate white dust from the machine cutting the tape for each component. The
Electronics Forum | Wed Mar 14 08:45:41 EST 2001 | stefwitt
In order to track the board flow through your line you will have to hook up all conveyor input sensors as well as the last output sensor to a PLC. You can program the PLC to provide an alarm signal if a accumulative time of xxx hours for any board is
Electronics Forum | Tue Mar 20 18:51:34 EST 2001 | gburson
Another consideration is that heat damage is accumulative. If you have temperature sensitive components, that third reflow may be bringing them close to their failure point.
Electronics Forum | Thu Aug 22 15:31:52 EDT 2002 | Claude_Couture
In an oven with flux reclamation system, once the circulation is prevented by accumulation of flux in the heat exchanger, the flux will condense where it can, and some of it will coat your PCBs with a uniform layer of flux on the parts/ joints/ goldf
