Electronics Forum | Thu May 25 11:31:52 EDT 2006 | muse95
Patrick, I believe you are mistaken about this being a myth. Many component manufacturers changed more than plating to make their component withstand higher temps. Some changed mold compounds, others changed plastic types used. Many of these change
Electronics Forum | Mon Jul 14 15:25:52 EDT 2008 | patrickbruneel
CK, If the contact length with the wave is decreasing when decreasing the conveyer speed and visa versa you need to check the machines electrical or electronics something is very wrong. Contact length is determent by wave design, wave height, convey
Electronics Forum | Mon Apr 28 11:37:52 EDT 2003 | jax
Herman, Before I get into this I would like to know something. What machine takes the longest to change over? That should be equal to your change over time. If it is not one of your pick and place machines this is all beside the point. I am not sure
Electronics Forum | Wed Apr 07 12:07:54 EDT 2004 | davef
Q1: What are the main implications in changing an assembly production line from pin in hole to one based on surface mount technology? A1: The main implications in changing an assembly production line from pin in hole to one based on surface mount te
Electronics Forum | Wed Dec 21 17:46:33 EST 2005 | muse95
Wow - 11,000. We have 8K-9K, and we have had three people working on it for the last 6mos, around their other duties. We aren't done. Some MFR's changed PN's. Some add G, some add LF, some add NOPB, some add Z, Some add a "+", etc. Some have no d
Electronics Forum | Mon Jul 16 15:47:52 EDT 2012 | davef
Here's what Desco says ... Humidity Indicator Card (HIC) A card on which a moisture-sensitive chemical is printed such that it will change color from blue to pink when the indicated relative humidity is exceeded. This is packed inside the moisture-se
Electronics Forum | Thu Jun 08 07:31:14 EDT 2006 | slaine
Saw this and thought you may find it amusing. How many forum members does it take to change a light bulb? 1 to change the light bulb and to post that the light bulb has been changed 14 to share similar experiences of changing light bulbs and how t
Electronics Forum | Fri Dec 15 15:59:35 EST 2000 | Hussman
Dave, It will all be about the same - changing atmospheres does not affect your heater output. You may experience some differences in the way your solder joints look (a little duller), but with some of the newer pastes out there, you can overcome i
Electronics Forum | Tue Oct 31 20:42:56 EST 2000 | speedy-tech
Now we are face with tombstoning for component '0402',we have tried many ways,it seems no change,Below is our experient: 1,The thickness of stencil is 0.12mm,and the aperture is circle.the diameter is 0.55mm.The pads size is 0.5*0.6. 2 Ch
Electronics Forum | Thu Mar 22 15:44:50 EST 2001 | pteerink
I have a board with QFP240 plastic package exhibiting the same characteristics. Minimum heel fillet that doesn't change with stencil mods, paste change, profile change etc ( I am working to class 2, though, so my pass spec, although they are not pret
