Electronics Forum | Thu Nov 16 22:01:06 EST 2017 | deanm
That model comes standard without bottom preheaters. Bottom preheaters are an option so I would think it is designed for general use unless you have some very thermally challenging boards. As long as you are within the process window, you'll be fine.
Electronics Forum | Thu Nov 16 08:57:00 EST 2017 | jandon
We found used Ersa HotFlow 2/14 reflow oven that does not have bottom side preheaters. Can it be easily and safely used in normal high mix/low volume production or is it built for specific products which does not need bottom preheaters?
Electronics Forum | Wed Mar 11 09:06:06 EDT 2009 | lococost
No, it's not. Bottom components will reflow regardless of bottom side heaters.
Electronics Forum | Mon Mar 16 08:34:46 EDT 2009 | sachu_70
Hey Loco, how about saving the bottom side? It actually only depends on your oven setting specific to Top heaters and Bottom heaters. Unless you set the parameters rightly, you would face such issues. It only indicates that you need to seriously re-l
Electronics Forum | Fri Jan 13 12:12:48 EST 2006 | jimk
we have 4 bottom IR heaters and a 2 zone bottom Quartz heater (2 lamps/4 lamps) and 1 convection heater above zone 1 IR. we have very tight restrictions from customer and I could send profile view to your email if possible
Electronics Forum | Tue Jul 24 08:31:53 EDT 2018 | mgerrior
Hey, thanks for your response and the information on the TF2800. Would this be suitable for PCBs up to 30 layers? The specs of the bottom heater are quite low in comparison to other "large PCB" rework stations. 1000W bottom heater whereas most are
Electronics Forum | Tue Jul 24 20:07:31 EDT 2018 | lraymond
24") The RD500V has three heaters and it uses a combination of hot gas and IR. The area heater can range from 3600 watts to 4800 watts with a bottom localized heater that is 1 000 watts which has adjustable z movement. The price of the RD500V series
Electronics Forum | Wed Jan 18 02:00:36 EST 2006 | pavel_murtishev
Good morning, This isn�t very strange. Bottom side components are prone to tombstoning more than topside ones. Try to reduce oven�s bottom heaters temperature slightly to prevent solder paste melting on bottom side. This can help. BR, Pavel
Electronics Forum | Wed May 10 00:42:10 EDT 2006 | Chris
I agree with all of you. If it is a good forced convection oven, the bottom side of the PCB will get very close to reflow temp and will probably reach reflow temp. Plus your oven may fight your settings. The lower heater temp settings will never b
Electronics Forum | Tue Mar 10 06:31:08 EDT 2009 | sachu_70
First evaluate yoru Reflow Oven: does it have independant temp control for Top and Bottom Heaters? This is a MUST.
