Electronics Forum | Wed Feb 21 16:03:14 EST 2001 | blnorman
You're right, manufacturers time/temps will vary. A single manufacturer will have a host of materials with different cure schedules. We currently use 2 epoxies that cure in 2 - 3 minutes at 150�C. One will also cure in 5 minutes at 125�C. Talk t
Electronics Forum | Thu Feb 22 22:04:33 EST 2001 | davef
Travis: I just checked. You're correct. It's a SMD-310, circa 1985 with a 12" wide mesh belt and a screamin' three zones of solder meltin' fury.
Electronics Forum | Wed Feb 21 14:18:37 EST 2001 | jagman
Could anyone please give me some insight on the time/temperature requirements for curing SMT adhesive used for a high temperature (96/4 solder) application in a bake oven, rather than using reflow? I understand that it would probably vary from epoxy
Electronics Forum | Wed Feb 21 21:21:10 EST 2001 | davef
Gary: It doesn't matter what you use to cure your glue. SMA adhesives are thermosets. This means they become hard on cure and this is not reversible. A couple of things go on with SMA adhesives when you heat them. * Their rheology is temperature
Electronics Forum | Thu Feb 22 09:56:21 EST 2001 | blnorman
An adhesive, is an adhesive, is an adhesive. Yes most will thin when exposed to elevated temperature, but that's only for a short time. As cross-linking starts, viscosity increases. Having made countless numbers of adhesively bonded samples in the
Electronics Forum | Thu Feb 22 12:26:33 EST 2001 | traviss
I used a Blue M batch oven quite a bit to cure in works great. All you have to do is get the board up to cure temperature, 150C normally and your all set. It will probably be in there longer than the time required but at that low temperature it shoul
Electronics Forum | Wed Feb 21 20:01:39 EST 2001 | davef
I�m unclear about the intent of your question, but I�ll take a pass at it regardless. I second the previous poster's commets. [Ya, that's the ticket.] Most chip attach adhesives should not be cured at typical reflow profile temperatures. Check yo
Electronics Forum | Wed Feb 21 20:40:44 EST 2001 | jagman
I appreciate both of your responses. I spoke with a tech rep at a distributor of the Loctite 3609 and asked him if this adhesive can be cured using a bake oven (Blue M, Despatch, etc.), rather than convection/IR. He stated that he's never heard of
Electronics Forum | Wed Oct 17 02:04:39 EDT 2018 | robl
SCC3 has an operating temperature of 200C, as long as it is heat cured at 100C. https://www.electrolube.com/pdf/tds/044/DCA.pdf It's also a silicone so needs to be coated & cured away from anything you value. Otherwise there are plenty of PU's and
Electronics Forum | Thu Jan 11 09:19:56 EST 2007 | SMTRework
I know this is not the correct forum to post chip "reworking" questions but you guys have been very helpful in the past. My question is this, when we rework BGA components most of the time the solder reflows at a normal temp and all is well. On occ
