Electronics Forum: marc (Page 1 of 11)

Wireless wrist strap

Electronics Forum | Tue Oct 19 13:35:22 EDT 2004 | marc

Seeing a product such as this and thinking about simple engineering. Every lightning rod I have ever seen on a building, home, tower, etc... had this long metal device called a "conductive wire" that runs into the ground. I'll stick with the ligh

Max temp on a lead free part

Electronics Forum | Mon Oct 18 12:55:47 EDT 2004 | marc

45 seconds from 230-245C. Check your paste material of choice for recomended profile peak temp and TAL. If you have not selected a lead free material check out the major paste suppliers on their lead free material offering and review the specs.

Lead Free Delta T (reflow 7 zones)

Electronics Forum | Thu Mar 09 16:14:19 EST 2006 | marc

CGO Assuming your system is performing well here are a few ideas to help out your profile.... - Pull the material spec and ensure you are meeting the requirements for times and temp. Many times the material will allow a mild soak of the board prior

Lead free contamination at reflow

Electronics Forum | Thu May 18 08:12:22 EDT 2006 | marc

smt You should have no issue using your exsisting oven for both leaded and lead free materials if the machine is capable of delivering the desired profiles. One aspect that makes a "lead free" oven is the design of the system. Ability to reach th

Heller Oven blowing parts off reflowing

Electronics Forum | Thu May 18 08:31:28 EDT 2006 | marc

Hi James Short answer... yes... long answer...impingement velocity is excellent for heat transfer but it also is a higher risk of moving components. Variable speed blowers allow you to reduce the speed / impingment and more than likly your compone

ERSA Hotflow5

Electronics Forum | Mon Sep 27 10:49:51 EDT 2004 | marc

Gary Getting the specs for a used machine will be tough from Ersa but at least send them a note, the seller should also be able to get the info for you. In regards a 5 zone system. I would suggest at least 7+ zones if your moving to lead free.

8 Zone Vs 7 Zone Reflow Oven

Electronics Forum | Wed Oct 27 11:38:44 EDT 2004 | marc

This has always been a big debate on what is better. Few things to consider before getting into number of zones. What is the throughput and cooling requirements? Throughput is a direct relation to length of heating zone. Longer heating length

Screen Printers

Electronics Forum | Fri Jan 20 09:19:29 EST 2006 | marc

Here is the link for the rep in TX. You can ask about new and refurb equipment. http://www.speedlinetech.com/contact/index.aspx

Thermal Profiler Shield

Electronics Forum | Thu Jun 01 09:31:26 EDT 2006 | marc

All data loggers will be warmer at the higher lead free temps. Only two ways around this... better thermal barriers or fans after the profile to cool it down. Some places do not allow fans on the production floor due to static electricity, in that

N2 & Lead Free

Electronics Forum | Mon Jun 05 14:28:45 EDT 2006 | marc

A few years ago with the 1st and 2nd generations of lead free material N2 was highly recommened. Now most of the materials suppliers have good formulations that are just fine in air reflow. I would still run a DOE though... just to be sure. Als

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