Electronics Forum: high thermal mass (Page 1 of 65)

Re: Reflow ovens : high mass vs. low mass

Electronics Forum | Tue May 18 18:17:50 EDT 1999 | Scott Cook

| Looking at the full convection reflow oven market, I see two segments, high mass heater ovens (i.e. Electrovert Omniflow,...), and low mass heater ovens (i.e. Heller,...) | Did some of you guys did some testing on both types and what were your find

How are you reworking high mass LED pcb's?

Electronics Forum | Thu Aug 31 10:38:24 EDT 2017 | jchris

Thanks for all of your suggestions. I ended up borrowing a Pace Worldwide PH100 Preheater, which worked like a charm. I'm in the process of purchasing one for our own shop. I had to place the aluminum pcb directly onto the PH100's ceramic heating pla

What is thermal mass?

Electronics Forum | Mon May 23 08:22:31 EDT 2005 | davef

Thermal mass is the ability of a material to absorb heat energy. * A lot of heat energy is required to change the temperature of high density areas, like a ground plane. They are therefore said to have high thermal mass. * Light weight areas, such as

Reflow ovens : high mass vs. low mass

Electronics Forum | Tue May 18 03:23:56 EDT 1999 | PhilB

Looking at the full convection reflow oven market, I see two segments, high mass heater ovens (i.e. Electrovert Omniflow,...), and low mass heater ovens (i.e. Heller,...) Did some of you guys did some testing on both types and what were your findings

Re: Reflow ovens : high mass vs. low mass

Electronics Forum | Tue May 18 14:47:02 EDT 1999 | Dave F

| Looking at the full convection reflow oven market, I see two segments, high mass heater ovens (i.e. Electrovert Omniflow,...), and low mass heater ovens (i.e. Heller,...) | Did some of you guys did some testing on both types and what were your find

Starting point 7 zone oven profile for lead free - 2 layer simple board, but high mass electrolytics

Electronics Forum | Thu Apr 24 12:18:01 EDT 2014 | cyber_wolf

You must thermally profile your circuit boards with a data-logger and thermocouples. Just putting in oven set points and looking at solder joints is not enough. Reference IPC-7530

Starting point 7 zone oven profile for lead free - 2 layer simple board, but high mass electrolytics

Electronics Forum | Wed Apr 23 09:38:05 EDT 2014 | rgduval

Get in touch with your paste manufacturer. They should have a data base of different oven types/zones, and can give you "baseline" settings for a medium thermal density board that has been proven to work well with their paste. After that, it sounds

How are you reworking high mass LED pcb's?

Electronics Forum | Fri Jul 07 16:56:21 EDT 2017 | jchris

Defective LED's that I need to replace.

How are you reworking high mass LED pcb's?

Electronics Forum | Fri Jul 07 16:57:30 EDT 2017 | jchris

Sounds interesting CAPSE, but unwieldy. Thanks.

How are you reworking high mass LED pcb's?

Electronics Forum | Fri Jun 23 09:11:06 EDT 2017 | jchris

I have a few LED pcb's that have an aluminum substrate that are ridiculous to rework. They heat-sink like crazy and I can't reflow the bad LED's, no matter how much heat I apply. Any suggestions on techniques or equipment to use?

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