Electronics Forum: high mass (Page 1 of 21)

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 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

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

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?

How are you reworking high mass LED pcb's?

Electronics Forum | Fri Jun 23 12:11:26 EDT 2017 | rgduval

I haven't tried doing these, personally...but... - Try a pre-heater? - IR rework station? Off the top of my head, that's all I've got. Cheers, ..rob

How are you reworking high mass LED pcb's?

Electronics Forum | Sat Jun 24 10:10:31 EDT 2017 | fugtussey

Here's a good IR preheater that you should look at: www.paceworldwide.com/products/smt-rework-systems-and-preheaters/preheaters/ph-100-low-profile-pcb-preheater

How are you reworking high mass LED pcb's?

Electronics Forum | Fri Jul 07 15:00:19 EDT 2017 | emeto

A picture shows more than a thousand words. If you show us the LED and PCB if possible, I am sure people here will come up with some ideas.

How are you reworking high mass LED pcb's?

Electronics Forum | Fri Jul 07 16:52:20 EDT 2017 | tombstonesmt

We had very little success reworking these type of boards. We used a BGA repair station and still was a major hassle. Are these shifted LED's or defective?

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