Electronics Forum | Tue Jul 14 18:42:41 EDT 2009 | anndi
1smtdude, I interested in your explaination of > re-work an underfill part. You mention the > material can be heated to a plastic state to > become vicious... do you know usually what range > is the temperate? (guess it can depend on the > type
Electronics Forum | Wed Jan 17 15:13:24 EST 2007 | jaime39
When placing the part to be reflow try applying heat to the board from the secondary side until the primary side has a temperature of about 130 degrees celcius. Following this procedure it should minimize the heat exposure of the part being soldered.
Electronics Forum | Fri May 12 11:12:20 EDT 2006 | patrickbruneel
Slain, A melting point of 300C would be a little too high for the components and tinny boards. I just heard they will market the watches as Swiss "army" watches which makes them exempt.
Electronics Forum | Sun Aug 08 04:36:02 EDT 1999 | Brian
Dave Frankly, I think you may be barking up the wrong tree. Like DaveF, I suggest that the process would be horrendously expensive with masking and so on. The $64,000 question is whether what you propose will serve any useful purpose. I venture to
Electronics Forum | Fri Feb 23 09:35:36 EST 2024 | emanuel
We have the standard profile as a template made according to the solder paste specs. For some boards we measure the result at 2 points, on the board itself and on top of a sensitive SOT263 module and adjust accordingly. The solder paste is well kept,
Electronics Forum | Mon Aug 25 02:57:43 EDT 2014 | arjunkolavara
We are in the process of qualifying our SMT lines for the High Melting Point Solder with alloy composition of 93.5 Pb 5 Sn 1.5 Ag.If any one has already an experience with this alloy,kindly do give ur inputs on the process of profiling . The reflow d
Electronics Forum | Mon Aug 25 08:15:54 EDT 2014 | jax
With a melting point of roughly 300°C, you would need to have the product see temperatures peaking around 325°C at a minimum. (I would make sure the components and PCB materials can withstand these temperatures) Most convection ovens do not go over 3
Electronics Forum | Mon Aug 25 12:43:35 EDT 2014 | freddimock
Numerous people use the Pyramax oven to process high temp solder but your success will depend upon the mass of your board. To maximize the probability of success you should use the highest convection rate (IWC) possible to enhance heat transfer an
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