Electronics Forum: 1a33 deg c (Page 1 of 43)

solder paste for 200 degs c continuous operation?

Electronics Forum | Wed Mar 21 11:46:46 EDT 2012 | torch

thanks for the info :)

solder paste for 200 degs c continuous operation?

Electronics Forum | Wed Mar 21 10:37:02 EDT 2012 | torch

we are currently developing a 180 degs downhole tool and are right at the limits of our current solder paste, the tool has mostly surface mount parts and some fine pitch ic's. i was wondering if anyone had any recomendations for a suitable solder pas

solder paste for 200 degs c continuous operation?

Electronics Forum | Wed Mar 21 13:47:16 EDT 2012 | jax

To have an Operating Temp (Tool Classification) within your range, you might want to try. PB85 (Pb85/Sb10/Sn5) SMT is normally processed using Vapor Phase but can also be achieved with Nitrogen assisted Convection Reflow depending on size and compl

solder paste for 200 degs c continuous operation?

Electronics Forum | Wed Mar 21 13:16:11 EDT 2012 | grahamcooper22

What solder alloy are you using at the moment which is coming to the end of its limits ? Normally in general for safe operation of an alloy we don't like to recommend any operation temp that is higher then two thirds of the solders melt point, but th

solder paste for 200 degs c continuous operation?

Electronics Forum | Wed Mar 21 11:42:54 EDT 2012 | davef

Downhole solder suggestions, in order of preference are: * Kester Sn96.3Ag3.7. Most vendors do not stock straight tin-silver alloys, whose wallet is that fat? * SAC305 can usually be used in place of one of the copper-free tin-silver alloys in downho

Bubbles in Conformal Coating

Electronics Forum | Tue Feb 03 13:47:59 EST 2009 | grics

I would also suggest looking at your ramp rate in the cure oven. We noticed that accelerated heating increased the "gas out" of the solvent. We run 1A33 and and do not exceed a .5/degC ramp rate.

Reflow Specs.

Electronics Forum | Mon Aug 13 05:17:16 EDT 2001 | nifhail

Normally the specs I monitored in our temperature profiles are Slope 1-2 Deg C/sec, preheat 60 - 120 Sec at 120 Deg C - 150 Deg C, peak 215+/- 10 Deg C, above 183 Deg C is 45 - 75 Sec, total reflow is 3 - 5 minutes. Why is it that we don't monitor

Dymax vs Humiseal Urethane Confomals.... Anyone?

Electronics Forum | Tue Feb 03 13:39:08 EST 2009 | grics

Good morning Jamie. I work at a CM and can offer some input on process flexability. I do not have any data on how reliable the coating is but I can say that they are both very difficult to control. Will you be selective coating or full coating? Ho

Profile

Electronics Forum | Thu Jan 10 06:52:51 EST 2002 | Dreamsniper

I'm using Kic Profiler and aluminium tape from Kic and thermocouples from Kic. They are good and reliable. I even manage to modify my heller 1088 by adjusting the fix conveyor and re-baffling the oven. Had dropped my 20-22 deg. C delta T down to 4.3

Reflow profile negative temp ramp rates

Electronics Forum | Tue Apr 09 00:09:25 EDT 2002 | craigj

Question. When profiling and looking at the profiles cooling rate. Over what temperature range should the slope be monitored and what sort of cooling rates should be looked for. Paste supplier says no more than 6degC per sec, some components maybe lo

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