Electronics Forum: atmosphere (Page 1 of 22)

Re: Nitrogen to use or not to use

Electronics Forum | Thu Dec 16 11:54:45 EST 1999 | Mike Naddra

At reflow an inert atmosphere is used to mitigate the occurance of oxidation, to me the decision weather to move from an inert atmosphere is based on several things ; PCB surface finish - are you using a HASL finish, OSP or another surface finish and

How to measure N2 in reflow oven

Electronics Forum | Thu Mar 04 07:57:32 EST 1999 | John Godfrey

I need to setup an oven to run with a nitrogen atmosphere for boards with BGA's, but our ovens do not have the optional atmosphere monitor and controller. Is there a good way to sample and control the atmosphere without the optional built-in atmospe

dry oven

Electronics Forum | Wed Aug 14 16:30:55 EDT 2002 | sleech

Dan: Until I got deep into development of a vacuum assisted moisture removal process, I always thought that the bake process would be saddled by the lack of atmosphere in the chamber. I later learned that the conduction of temperature at reduced atm

Reflow Oven Atmosphere Purity

Electronics Forum | Wed May 12 07:56:31 EDT 1999 | Joe Belmonte

Folks, I am interested in knowing what level of Nitrogen purity you are running in your reflow ovens for standard SMT assembly? It seems over the last several years people are increasing the Oxygen level in thier reflow oven atmosphere. What purity L

Re: How to measure N2 in reflow oven

Electronics Forum | Thu Mar 04 08:50:53 EST 1999 | Dave F

I need to setup an oven to run with a nitrogen atmosphere for boards with BGA's, but our ovens do not have the optional atmosphere monitor and controller. Is there a good way to sample and control the atmosphere without the optional built-in

How much air flow is required for an Omni Flow 5 oven?

Electronics Forum | Fri Feb 15 15:55:58 EST 2008 | pjc

This is from the OmniFlo 5 Engineering data sheet: EXHAUST SPECIFICATIONS: STANDARD AIR OPERATION: - Load-end: 150 cfm (255 m3/hr) at the 4� (102 mm) stack (minimum requirement) - Unload-end: 300 cfm (510 m3/hr) at the 4� (102 mm) stack (minimum req

Re: N2 vs. Air Reflow Soldering

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

Re: Reflow Oven Atmosphere Purity

Electronics Forum | Wed May 19 14:12:53 EDT 1999 | Glenn Robertson

Folks, I am interested in knowing what level of Nitrogen purity you are running in your reflow ovens for standard SMT assembly? It seems over the last several years people are increasing the Oxygen level in thier reflow oven atmosphere. What

Minimizing Tombstoning Defects

Electronics Forum | Tue Sep 18 10:22:22 EDT 2001 | jschake

Paste Flux / Reflow: Our experiments indicated that the combination of no-clean solder paste and air forced convection reflow produced the fewest tombstone defects, followed by water-soluble paste reflowed in air, and most tombstones occurring with

Nitrogen for reflow

Electronics Forum | Thu Mar 17 11:15:26 EDT 2011 | circleprime

I did some investigating and it seemed that getting a reflow oven with an inert atmosphere could be the answer to the inconsistant wetting issues that we are having with a leadfree DFN-10 on one of our products. Here's my question(s). It seems that

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