Electronics Forum | Fri Nov 13 06:56:37 EST 2009 | CL
Good Morning, The customer is looking for void free connections. They had never specified an acceptable percentage. We are reacting to the test yield. Our yield has averaged 50%. We do not test the product so we rely on feeback from the customer. Us
Electronics Forum | Mon Jan 11 14:48:44 EST 2010 | davef
SR1000 is commonly used for tenting. Search the fine SMTnet Archives on : tenting Someone gave us this note. We have lost their name. It seems to be good advice. If Liquid Photo Image (LPI) solder mask is required, do not tent via holes. Tenting
Electronics Forum | Wed Jan 20 17:16:36 EST 2010 | grantf
While on the topic of feeders I would like to ask a question about the Mydata Tube or stick feeders. Due to a shortage of metal forks for the tube feeders we are forced to improvise and use what ever size of fork is available. This is done by notchin
Electronics Forum | Mon Jan 25 00:56:38 EST 2010 | sparrow
Hello, Mydata p&p machines are built for high mixed and low/mid volume production, so if you talk about very low volume - no doubt, mydata is what you can use. You can consider 2 models for your application - MY100SX or MY100LX, depending on the min
Electronics Forum | Thu May 20 18:14:53 EDT 2010 | geocep
Process Flux is AIM 275. Tip tinning flux is Superior 75. We have gotten dual nozzles in the 6mm & 9mm sizes we run. We can get a nozzle to run about 8 hours. Every night we clean all used nozzles with a scouring pad, apply Superior 75 flux with
Electronics Forum | Wed Mar 31 06:08:45 EDT 2010 | miroyu
Hi everyone ! I started to program quad 4C for the first time and have some problems. First, board detection LED and proximity Led (on the front panel) are not lightning whatever I do! Second problem is I teach machine board size, nozzle locations
Electronics Forum | Mon Apr 05 09:33:42 EDT 2010 | flanz
Hello. I'm new to the group and would like to ask a question about a YTV-2000 that I have. Question is - Could someone explain why my Yestech 2000 has a hardtime with calibration? What happens is that I run calibration before I start a new board.
Electronics Forum | Mon May 03 16:39:44 EDT 2010 | jlawson
Thanks Larry We are loooking a bigger Vapor > machine which could soldered our big size > borad(600x600 mm)assembled with hundreds of > sockets and thousands of components. How about > IBL products? Anyone used before? You should also look at
Electronics Forum | Fri Jun 04 21:27:16 EDT 2010 | deanm
We have a 4 zone Quad ZCR 531B reflow oven with top side heaters only and a mesh belt. Our boards are 2-6 layer, range in size from 2x2 to 7x15, 0402 to D2PAK. What are the limitations/drawbacks of having top side only heat, especially since about ha
Electronics Forum | Wed Jun 16 07:35:28 EDT 2010 | scottp
Rather than tent the thermal vias, we use a small annular ring of soldermask around them and only print paste in the areas between the vias. Any way you go you're going to have voids under QFNs, so we just try to make it repeatable so our designers
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