Electronics Forum | Wed Aug 12 07:22:52 EDT 1998 | Earl Moon
| | | | | Is there any problem using SMT on gold boards? 15 years ago we were told not to use gold boards, but I can't remember why. Judging by the other postings it now appears to be common. Only problem I see is that the nickel should be plated,
Electronics Forum | Thu Jul 15 12:35:19 EDT 1999 | Earl Moon
| I use a Transition Automation Semi- Automatic stencil printer with laser cut frameless stencils. My solder paste is an SN63/PB37 RMA 291. I do not operate with in a controlled humidity enviroment. The room temp generally runs around 70 deg's but hu
Electronics Forum | Sun Feb 24 13:52:47 EST 2002 | bentzen
Hi Armin Printing equipment can be divided into two main groups; In-line and off-line. For "small" production sites an off-line screen printer should be adequate but for high out-put placement lines, where the product cycle-time is short, an in-line
Electronics Forum | Thu Apr 01 03:04:22 EST 1999 | Scott Davies
Dave, Thanks for the interest. Basically, we looked at this project as a straight swap, i.e. printing the glue on the PCB using a Dek screen printer instead of our current method of dispensing glue using a Camalot dispensing machine. For the PCB we
Electronics Forum | Thu Nov 01 22:19:57 EDT 2007 | lvzhu
The solder that we used is kester EM918 and Multicore LS328. Our printer machine is DEK-photon, this machine has supply below 300mm/s. the datasheet solderpaste of speed range is 30 to 150mm/s. when we produce the keyboard of the moble phone, this bo
Electronics Forum | Mon Oct 26 06:27:50 EDT 2009 | bandjwet
SMTnetters: Does anyone have experience in the average programming time that they use for calculating costs on using a solder dispense and place process for QFN rework? How about average cycle time from start to finish for same? We are comparing it
Electronics Forum | Wed May 28 08:25:08 EDT 2003 | davef
That's what we do [no more than three reworks or mods]. Your "four reworks permissable" was probably based on the 55110 five thermal cycles, counting wave soldering as the first cycle. How do you plan to keep track of each of those rework actions?
Electronics Forum | Wed Jan 07 02:08:56 EST 2009 | sachu_70
Hi! Just joined the circuit. Hot Bar soldering is very reliable provided the Flexible Printed Circuit (FPC) and Rigid PCB design support this technique. Some of the critical aspects that need to be considered include Stencil apperture design for sold
Electronics Forum | Thu Jul 15 14:09:23 EDT 1999 | MMurphy
| | I use a Transition Automation Semi- Automatic stencil printer with laser cut frameless stencils. My solder paste is an SN63/PB37 RMA 291. I do not operate with in a controlled humidity enviroment. The room temp generally runs around 70 deg's but
Electronics Forum | Tue Jul 20 07:56:38 EDT 1999 | Mark Quealy
| | | I use a Transition Automation Semi- Automatic stencil printer with laser cut frameless stencils. My solder paste is an SN63/PB37 RMA 291. I do not operate with in a controlled humidity enviroment. The room temp generally runs around 70 deg's bu
