Electronics Forum | Wed Nov 13 15:33:08 EST 2013 | mondalaci
Good question :) I'd say with a machine that is available for an average pick and place operator nowadays. Our manufacturer is not fixed yet, that's why I don't have any specific. On a related note I'm wondering whether the machine is so importan
Electronics Forum | Mon Nov 07 12:25:32 EST 2005 | Rob
Hi CW, Larger chip caps can be susceptable to cracking, but mainly this is due to handling - flexing of boards is the main culprit (the part being mechanically joined at both ends to the board). PCB's usually flex easiest along one axis, and larger
Electronics Forum | Fri Aug 04 13:47:20 EDT 2006 | pemea1
apples to apples. 20 boards 80 parts top and 10 parts bottom. these boards are done on a semi regular basis (you know the boards are coming to you from an OEM at least three times a month, just no exact schedule). All that is required is pasting..mo
Electronics Forum | Sun Nov 28 02:23:38 EST 2021 | tueftler
Hi there. I have an Ipulse M1 mounting mashine. For that i have PS84 and F1 Feeders. Now i have a strange behavior with my new F1-16 feeder. The machine dont had the F1-16 feeder type on its library. So i have insert it by myself. The problem is, th
Electronics Forum | Tue Nov 25 16:26:43 EST 2003 | tdurston
We are trying to establish requirements and process controls for completed, cleaned SMT assemblies. We have problems with our high impedance circuits (100 meg ohms) being affected by residue. Some boards require additional cleaning cycles to remove
Electronics Forum | Thu Oct 02 12:22:26 EDT 2008 | JerryS
Hello Ok there is not much info here. What you have to mae sure of is several key factors. 1. Have you entered the correct stencil thickness. 2. Are you using the stencil gerber (not the paste layer) The paste layer is usually not adjusted for ap
Electronics Forum | Mon Aug 13 09:49:35 EDT 2012 | rjlatz
I just got back from a visit to our PCBA manufacturer. We have good flowthrough on the PTH, but solder skips and bridges on the SMT SO IC's. We have correct orientation and robber pads, but the results are still the same. I noticed the wave shape is
Electronics Forum | Mon Nov 03 22:38:39 EST 2014 | dustind
Hi there! I'm an engineering student from Toronto, ON looking for someone to mount a MEMS microphone for me for a school design project. Trouble is, I need a reflow oven for the proper surface mount and my university doesn't have access to one. K
Electronics Forum | Tue Aug 22 16:02:07 EDT 2000 | Dr. Ning-Cheng Lee
If the thermal mass of the products is small, a tent-shaped profile is recommended, with peak temperature around 240C. The hottest spot on board should be less than 250C. However, if the thermal mass of the product is large, such as a large server PC
Electronics Forum | Thu Jun 06 02:27:43 EDT 2002 | ianchan
Hi mates, does anyone know if there is a industrial standard spec for environment(deg-C, RH%) operational use of Paste Printer machines? If there is no study to define a deg-C, RH% specs for immediate environemnt operation use of a paste printer ma
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