Electronics Forum | Tue Oct 03 22:10:42 EDT 2006 | jonatf
Hi guys, Our vapour phase oven is taking too long to heat up about 15 mins/cycle. Normally its 5 to 6 mins. 2 reasons why. 1.using 10 amp power board 2.heating element not working properly. before i set up a 15 amp outlet i want to know first if my
Electronics Forum | Wed Oct 04 03:44:23 EDT 2006 | slaine
you should be able to work out the resistance of the heater element from the power rating (watts), and the Voltage its working at. then measure the resistance of the element and see if your anywhere near.
Electronics Forum | Wed Oct 04 03:48:14 EDT 2006 | slaine
Ps the above answer was to test if the element is failing, if you think the element is not working due to the current supply being limited you can carry out the same calculations but work out the current required then put an ammeter in series with th
Electronics Forum | Wed Jan 30 06:08:09 EST 2002 | nifhail
Can someone pls help to explain what is the vapour phase reflow soldering technology ? Thx, nifhail
Electronics Forum | Wed Jan 30 12:37:49 EST 2002 | jax
nifhail, In a nutshell: Vapor-phase reflow is a process that uses a fluid with a selected boiling point. As condensation of the hot vapor occurs on a cool assembly the assembly's temperature is rapidly raised to match the temperature of the vapor.
Electronics Forum | Fri Feb 01 10:57:52 EST 2002 | davef
Yes, that's what people are thinking. The 217�C melting temperature that you mention requires a ~250�C reflow temperature. Generally, boards, legend ink, and components cannot take that temperature. Further, few ovens can produce that temperature
Electronics Forum | Fri Feb 01 06:15:46 EST 2002 | nifhail
This can be a solution for IC/BGA soldering for lead-free process isn't it ? See, most of the reflow profile set meets solder paste specification but often violating ICs or BGA requirement. Most of the solder paste required temperature of about 205 -
Electronics Forum | Wed Jan 30 17:48:31 EST 2002 | davef
Expanding on a previous poster's comments ... Vapor Phase Soldering. A solder reflow technology that uses a heated solvent to melt the solder. Buried deep in the recesses of the SMTnet Library is �Terms & Definitions�. We started using vapor phas
Electronics Forum | Thu Aug 20 19:07:29 EDT 2009 | smt_guy
reduce the stencil aperture to prevent tombstoning in vapor phase process. from my experience a 6 mil thick must be at least between 20 to 30 % aperture reduction for 0805's and below. cheers!
Electronics Forum | Wed Aug 19 01:00:13 EDT 2009 | sergey2007
Hi! Thanks to everyone! Josh, I don't think it could be something wrong with the mechanics, as just one component was rotated. Anyway, we will check the mechanical parts of the oven. LarryD, thank you for the advice. But what is the physics of the
