|
| Subscribe to the SMTnet Express |
|
|
|
| Link to SMTnet |
| Tell everyone you know about SMTnet! You can add this small image to your Web site and provide a link to us. Click here to learn how. |
 |
|
|
|
 |
wave Electronics Forums search results
4755 results found for wave in 5s.
Showing matching items 1 - 50
- 98%
Vitronics Soltec Wave Problems - 6/8/07 -
- ... wave almost splashing solder on the solderable side of the components and pads. Or can be done with a jet wave (thin solder fountain) so the component body sits in air instead of massive metal. Or with a single omega wave (back and forward moving plate in front of the wave) creating enough force and vibration to reach the component solderable sides. Or with a rotating octangle (smart wave) in the front of the main wave creating turbulence and vibrating pressure in the front of the wave. Double ...
- 97%
No solder and solder bridge after Wave solder machine - 11/17/05 -
- ... bridge after Wave solder machine With DIP type components, a sub-par fluxing method (foaming a no-clean), and a chip wave where one is not needed are formulas for bridging and insufficient wetting. If you have SMD's on the wave solder side of the board greater than 0603, and no SOT23's, and all SMD's in the "correct" orientation whereby both pads and terminations are hitting the wave at the same time, hence no shadowing of your SMT devices, you may be able to do without a chip wave. Sometimes ...
- 96%
Re: Top Side BGA Reflowing @ Wave Solder - 10/11/99 -
- ... wave or use selective soldering pallet's, sometime's both. | Your 'fix' of speeding up the belt and turning off the chip wave really aint the answer, by speeding up the belt your changing the time in the wave which is a critical one for the flux and for the components. Your peel back effect on the wave exit mightt not be as robust as it could be which is going to lead to short's depending on what's on the bottomside of the board. The chip wave should be helping get the little joit's that your ...
- 96%
Re: pre-heat settings for wave solder - an answer to Gary's ? - Hi C.K. (Mini K)! - 6/23/00 -
- ... Grab hot board from other end of wave (key word here is HOT) and use the profile generated from your profiler software to make adjustments to your wave so you meet the flux vendors data sheet. It may take a couple of passes through the machine with the profiler, but you should be able to meet the data sheet within a day, depending on your experience and profiler. 6. Set-up the wave portion of your wave until you have good contact between your board and wave(s). Next run the board and profiler ...
- 96%
Re: pre-heat settings for wave solder - an answer to Gary's ? - Hi C.K. (Mini K)! - 6/23/00 -
- ... Grab hot board from other end of wave (key word here is HOT) and use the profile generated from your profiler software to make adjustments to your wave so you meet the flux vendors data sheet. It may take a couple of passes through the machine with the profiler, but you should be able to meet the data sheet within a day, depending on your experience and profiler. 6. Set-up the wave portion of your wave until you have good contact between your board and wave(s). Next run the board and profiler ...
- 96%
Re: wave solder process - 6/21/99 -
- ... Solder wave contact time and area must be assured as specified for a particular board type. Usually, using a Lev-Check glass plate, I set the contact area between 1.5 and 2.5 inches assuring paralellism across the plate. The contact time should be between 2-3 seconds and the board should be immersed in the wave not more than 50% of its thickness. Don't forget board angle over the wave at about 7-10 degrees depending on requirements. This may vary for selective wave pallets. | | If all else comes ...
- 96%
wave soldering and solder bridge - 12/17/07 -
- wave soldering and solder bridge 5 Steps to Eliminate Bridges: 1. Establish (wave) Parallelism First and foremost, you must establish board-to-wave parallelism. This is the prerequisite to any wave solder process control. For an understanding of the power of this approach go to http://www.WaveSoldering.com/WSO/Parallelism.htm. Remember, you must establish parallelism from -0.2 seconds to +0.2 seconds based ...
- 96%
Blowholes during wave soldering - 9/6/07 -
- ... during wave soldering Hi Joris - There is an excellent wave solder guide called "Take No Prisoners" that includes instructions for attacking and eliminating solder balls and preventing their recurrence: 1. Increase Dwell Time Solder balls are normally caused by too much flux solvent still on the board when it hits the solder wave, causing tiny explosions as the solvent vaporizes when it comes in contact with solder. One cure can be to increase your dwell time, to give your wave more time to ...
- 96%
Lead Free Wave Soldering - 7/22/04 -
- ... Wave Soldering Notes from an AIM No-Lead Presentation ... Wave Soldering * May require a higher pot temperature than tin/lead: 255-265*C * May require a change in liquid fluxes to compensate for the poor wetting of some alloys and high thermal stresses of the wave process. * Makes OSP a bad choice for wave soldered boards. Solder Maintenance * Certain lead-free alloys, such as Sn/Cu, suffer from high copper dissolution rates. * Unfortunately, whether Sn/Cu or Sn/Ag/Cu is implemented for wave ...
- 96%
Brush-Up Your Intermetalics!!! - 6/17/99 -
- ... Solder wave contact time and area must be assured as specified for a particular board type. Usually, using a Lev-Check glass plate, I set the contact area between 1.5 and 2.5 inches assuring paralellism across the plate. The contact time should be between 2-3 seconds and the board should be immersed in the wave not more than 50% of its thickness. Don't forget board angle over the wave at about 7-10 degrees depending on requirements. This may vary for selective wave pallets. | | If all else comes ...
- 96%
Re: Second wave elimination - 2/5/00 -
- ... wave elimination Hany: In response to your questions: 1- In a double wave solder M/C, is possible to completely eliminate the second wave without affecting the quality of the solder joints? Many w/s machines have a turbulent wave and a smooth wave. The turbulent wave is closer to the fluxer. The smooth wave is closer to the exit conveyor. ? Narrow turbulent wave wets all connections. ? Wide smooth wave forms fillets and removes excess solder. Generally, people use their turbulent wave on second ...
- 96%
Pad design for SMD Bottomside wave soldering - 5/9/01 -
- ... could be made more reliable by decreasing the pad size. Wave soldering puts a tremendous amount of solder, relative to reflowed connections, on each end of the ceramic chunks that comprise SMT resistors and capacitors. Wave soldering puts more solder on these connections for two reasons: 1 There is more solder available to form the connection in wave soldering than reflow soldering. 2 Components are stood-off the board more in wave soldering than reflow soldering as a result of using adhesives ...
- 95%
Wave soldering profiling - 5/7/04 -
- Wave soldering profiling I will try that next. I did speed up the wave pump motor with a larger pully(20% more speed) This was done at the time to try to increase the size of the wave because I had component leeds touching the wave pot as they passed by. Due to the wave hight being so small. After I cleaned up the solder pot and wave pump impellers though the wave hieght increased dramaticly. And now perhaps the wave is flowing too fast. I will go back to the original pully and that should slow ...
- 95%
MOLE's Oven rider - 1/4/99 -
- ... looked up in a table that corresponds to your wave contact number. Regardless of the actual shape of your wave. I think it was a after-thought feature to compete with the Wave Optimizer, which does a real immersion depth reading. In any case, DOE's have shown that immersion depth (1/3 to 2/3 of the board) has the least impact of any variable in wave soldering - contact length is the key. | | Several years ago I evaluated process control toys for wave soldering. The best I found was the Malcolm ...
- 95%
Re: wave solder process - 6/17/99 -
- ... Solder wave contact time and area must be assured as specified for a particular board type. Usually, using a Lev-Check glass plate, I set the contact area between 1.5 and 2.5 inches assuring paralellism across the plate. The contact time should be between 2-3 seconds and the board should be immersed in the wave not more than 50% of its thickness. Don't forget board angle over the wave at about 7-10 degrees depending on requirements. This may vary for selective wave pallets. | | | | If all else ...
- 95%
Through-hole/SM mix - 10/15/01 -
- Through-hole/SM mix Before this wave solder pallet salesman blather gets too far out-of-control, let?s stop for a minute. The three major approaches you have are: 1 SELECTIVE SOLDERING: Using: * Specialty wave soldering machine to solder specific areas of a board * Peculiar wave solder pallet on a standard wave solder machine to allow soldering specific areas, while block other areas from contact with the wave. 2 INTRUSIVE REFLOW: Using: * Paste printed on PTH pads and then reflow soldered ...
- 95%
Re: Wave Rider - 1/4/99 -
- ... a table that corresponds to your wave contact number. Regardless of the actual shape of your wave. I think it was a after-thought feature to compete with the Wave Optimizer, which does a real immersion depth reading. In any case, DOE's have shown that immersion depth (1/3 to 2/3 of the board) has the least impact of any variable in wave soldering - contact length is the key. Several years ago I evaluated process control toys for wave soldering. The best I found was the Malcolm Dip Tester. I ...
- 95%
Re: wave solder process - 6/17/99 -
- ... Solder wave contact time and area must be assured as specified for a particular board type. Usually, using a Lev-Check glass plate, I set the contact area between 1.5 and 2.5 inches assuring paralellism across the plate. The contact time should be between 2-3 seconds and the board should be immersed in the wave not more than 50% of its thickness. Don't forget board angle over the wave at about 7-10 degrees depending on requirements. This may vary for selective wave pallets. | | If all else comes ...
- 95%
Re: wave solder process - 6/17/99 -
- ... Solder wave contact time and area must be assured as specified for a particular board type. Usually, using a Lev-Check glass plate, I set the contact area between 1.5 and 2.5 inches assuring paralellism across the plate. The contact time should be between 2-3 seconds and the board should be immersed in the wave not more than 50% of its thickness. Don't forget board angle over the wave at about 7-10 degrees depending on requirements. This may vary for selective wave pallets. If all else comes ...
- 94%
bulbous joint - 2/20/04 -
- ... wave is a 50/50 flow off of the front and back. We use laminar flow waves with a flow of 90-95% front flow and back flow only very slightly present that can be stopped by just touching the solder. Or backflow only when the board is actually rding over the wave. Your pre-heat is not critical here since these little chip parts when they hit the wave are going to be at solder temp in a very short time. pre-heat is used to activate flux and prevent thermal shock when the assembly hits the wave along ...
- 94%
Wave flux and profiling - 12/15/06 -
- ... good wave profiler that has good software specifically for waves. We have a SlimKIC which is great for reflow ovens, but it's really crap for waves, as I have no idea how to make the software work right in a wave. I am looking for something that makes wave profiling easy and fast, so the guys do it often, and we can keep our process accurate. Regards, Grant
- 94%
Re: Rotary Chip Waves?? Way Cool! - 5/6/98 -
- ... Waves?? Way Cool! | | Does anyone have info on the rotary chip wave(compare/contrast to z wave.....)? | John, | In my humble opinion, rotary chip waves are the best thing since forced convection. Great coverage; never clog. And here's a really cool perk: the rotary chip waves have two controls - one for the solder pump speed to control the volume of solder you're pumping through it, and one for the rotary speed, which controls the atenuation of the wave. | With the more standard style chip waves ...
- 94%
Re: Brush-Up Your Intermetalics!!! - 6/17/99 -
- ... Solder wave contact time and area must be assured as specified for a particular board type. Usually, using a Lev-Check glass plate, I set the contact area between 1.5 and 2.5 inches assuring paralellism across the plate. The contact time should be between 2-3 seconds and the board should be immersed in the wave not more than 50% of its thickness. Don't forget board angle over the wave at about 7-10 degrees depending on requirements. This may vary for selective wave pallets. | | | | If all else ...
- 94%
Re: Top Side BGA Reflowing @ Wave Solder - 10/10/99 -
- ... fix' of speeding up the belt and turning off the chip wave really aint the answer, by speeding up the belt your changing the time in the wave which is a critical one for the flux and for the components. Your peel back effect on the wave exit mightt not be as robust as it could be which is going to lead to short's depending on what's on the bottomside of the board. The chip wave should be helping get the little joit's that your smooth wave will skip if your running too fast through it. best ...
- 94%
Grid lok system - 2/28/06 -
- ... suck! Just kidding. We had a guy that was in charge of our waves who said the same thing. Never two sure what he meant by that. I've been runnning wave solder for 12 years and them Gels seem to get rid of the broken parts at wave. Now that I'm in charge of runing waves, i looked back at our history at wave. Our number one defect was missing parts. This was never cause by the wave maCHINES BUT WE NEVER LOOKED AT A BOARD UNTIL AFTER WAVE. Since we started using the gels our only problem have been ...
- 94%
Wave solder capability study - 7/17/08 -
- ... solder temperature & dwell time * The most extensive study ever conducted on wave solder process control, involving 384 wave machines worldwide, found 76% of all wave machines running boards disparallel through the solder wave. 84% of the plants that corrected their disparallelism problem reported what they condsidered significant improvement in board quality the day the correction was made. [New Frontiers in Wave Solder Optimization: Daily Measurement of Parallelism Will Transform Your Board ...
- 94%
Step by step guide in evaluation of Solder Bar and Flux - 12/11/06 -
- ... WAVE SOLDER FLUX EVALUATION Author : Michael Havener Author Company : Benchmark Electronics, Inc Date : 09/25/2005 Conference : SMTA International Abstract : The European Union?s deadline to ban lead in electronic products is quickly approaching. To meet the challenges of lead-free soldering, a method to evaluate the performance of lead-free wave solder fluxes will be explored. Identifying the optimal water-soluble and no-clean chemistries is the objective of this testing. Existing wave solder ...
- 93%
Board wave soldering - 5/17/08 -
- Board wave soldering The Optimizer can be run through your wave like a regular board. It measures temps, times and parallelism of your waves in relationship to your board (pot to conveyor). Run the Optimizer till you get you temps, times and are parallel to your waves. This should result in optimum wave solder yields. Run product till you do achieve best yields, and then rerun the Optimizer. Now you have a recorded known set numbers for you product that produce best yields. Next time yields go ...
- 93%
Wave soldering profiling - 6/11/03 -
- Wave soldering profiling Frank-In addition (Dave gave some good scoop) we use a Pyrex Glass board to run through the wave. This is useful as you can see through the board .....you can watch the flux coverage, preheat, and Wave (be it Chip, lamda, or??) as it goes through the process. I like it for the Wave part as it allows you to see how parallel the board is to the wave. Lastly, I do not know what type of flux application station you are using but if it is not a sealed pressurized unit you may ...
- 93%
solder skips in chip wave on a NU/ERA wave solder - 5/25/09 -
- solder skips in chip wave on a NU/ERA wave solder Hello !! I have a problem with my wave solder oven, in one of the products we made has connectors on one side of the pcb and in the other one has SMT components the process is kinda tricky on the SMT components we use an adhesive and put to the reflow oven to cure,after that we put the connectors on the opposite side of the SMT components, then is taken to the wave solder where we use the chip wave and solder wave to solder the components and the ...
- 93%
Solder in wave soldering: Which one is the best? - 2/28/05 -
- ... in wave soldering: Which one is the best? TO JAY: What type of assemblies are you having 50-75% fill on. - Capacitor, resistor Are they single sided? - Yes Plated through hole? - No Is this a recent problem? - Yes, first time, but we don't know how long it last. TO RUSS: What is your topside preheat temp just prior to hitting the wave? - 220 to 210 What type of preheat do you have, convection or radiant? - Radiant Are you using a chip/turbulent wave in addition to the laminar flow wave? - Just ...
- 93%
two-sided design guidelines - 10/18/02 -
- ... IPC 782 and 770 have some useful info regarding mounting and pad geometries for wave etc... Since I do not know what type of components you will be wave soldering I will just give you some input on things I have learned. Orient all chip parts perpendicular to the wave, extend length of pad .2mm or so and reduction in width is sometimes beneficial SOIC packages should be mounted with the leads perpendicular to wave with solder thieving pads at the trailing edge. Make sure that the height of ...
- 93%
Re: double sided boards - process / design issue. - 9/22/98 -
- ... then you gotta look at the process. The chip wave is meant to splash solder everywhere to eliminate skips. So, if you're getting skips, turn the chip wave up. Now, a chip wave alone would create a bazillion shorts. The smooth wave, on the other hand, fills holes and debridges all the skips made by the chip wave. Without a debridging knife, the height of the smooth wave is absolutely critical to eliminating shorts. The smoother the smooth wave is, the better the natural advantage of the surface ...
- 93%
Second wave elimination - 2/3/00 -
- Second wave elimination Hello there: Could anyone help: 1- In a double wave wave solder M/C, is possible to completely eliminate the second wave without affecting the quality of the solder joints? 2-From a quality control prespective, what is the minimum accepted length of DIP component leads on the the solder side after wave soldering? 3-Is there any technical reference or quality standards for the PCB assemblies curvature after wave soldering? Hany
- 93%
Leaded and Lead-Free Wave Parameters - 5/21/08 -
- ... Wave Parameters Good morning gentlemen, I could use some advise as to the min / max windows for the wave process. We have had little problems with our leaded wave but when applying the same process to lead-free wave we are having problems. Obvisouly the temps are hotter, but the real issue is the process windows are so much tighter. SO i believe our leaded wave is riding towards the edges of the wide process window but still OK. However when we applied these same ideas to the leaded wave we are ...
- 93%
Wave soldering profiling - 6/11/03 -
- Wave soldering profiling Frank, ECD (WaveRIDER) and Datapaq (Optimiser) have wave solder machine process control devices. They will check the following: 1. Conveyor speed 2. Preheat Temps 3. Solder Temps 4. Wave Dwell/Contact Times 5. Wave Heights 6. Waves Parallelism Go to http://www.ecd.com or www.datapaq.com If your profiler is an ECD SMG, the investment for their wave machine gizmo is shorter money than DQ. Happy waving ...
- 93%
Wave Soldering - Icicling/Bridges - 1/24/03 -
- Wave Soldering - Icicling/Bridges I am not familiar with your flux but with no-cleans (which I use) the primary cause of icicling is the amount of flux solids left on the board prior to wave and how long the board is in the wave (2.5 to 3.5 seconds should be OK). The amount of flux solids left on the board prior to the wave can vary depending on the amount of flux that was applied during fluxing or how much if any was burnt off prior to the wave due to excess board temperature. With a foam ...
- 93%
Re: Rotary Chip Waves?? Way Cool! - 5/5/98 -
- ... Waves?? Way Cool! | Does anyone have info on the rotary chip wave(compare/contrast to z wave.....)? John, In my humble opinion, rotary chip waves are the best thing since forced convection. Great coverage; never clog. And here's a really cool perk: the rotary chip waves have two controls - one for the solder pump speed to control the volume of solder you're pumping through it, and one for the rotary speed, which controls the atenuation of the wave. With the more standard style chip waves, to get ...
- 93%
Re: 2512's To Wave or not to Wave???? - 4/27/99 -
- ... been wave soldering these for a while with no problems, trick is to slightly enlarge the lad's a bit so there is no chance of shadowing either with the fluxer or the wave. | | good luck | My 2 cents: Can you wave them? Yes. Do you want to wave them? Not if you can help it. Depends on the process - got a good active chip wave? Good fluxes? Good adhesive and dispensing process? Depends on the design - got good six-sided terminations on the component? Got a footprint for wave soldering with bigger ...
- 93%
Re: Top Side BGA Reflowing @ Wave Solder - 10/11/99 -
- ... from the heat at wave or use selective soldering pallet's, sometime's both. | Your 'fix' of speeding up the belt and turning off the chip wave really aint the answer, by speeding up the belt your changing the time in the wave which is a critical one for the flux and for the components. Your peel back effect on the wave exit mightt not be as robust as it could be which is going to lead to short's depending on what's on the bottomside of the board. The chip wave should be helping get the little ...
- 93%
Wave soldering after SMD assembling - 11/7/05 -
- Wave soldering after SMD assembling 6 deg is std angle. Some machines have option to adjust angle from 5 to 7. Maybe yours does. If you have an Electrovert wave machine you can get the Omega option. This option vibrates the wave to reduce surface tension. It does a nice job on rectangular chips, MELFs and SOTs. I think some other wave machine mfrs. have a similar option, I think Soltec calls it a Dancer. Turbulent Chip waves also reduce shadowing. Electrovert also has a Rotary Chip wave where an ...
- 92%
SPC for Wave solder (defects on PCB's) - 2/15/06 -
- ... for Wave solder (defects on PCB's) Russ, On both instruments, I ran them through the wave 20 times each using identical profiles and wave parameters, and then used statistical formulas to measure the variation and repeatability of each. I had these all in Excel, but that was around 1999.I'll try dig this up somewhere... The parameters which I felt were worth measuring were: 1.) Dwell Time 2.) Contact Length 3.) Parallilism 4.) Delta T (temp delta before the last pre-heat and chip wave) 5 ...
- 92%
bulbous joint - 2/19/04 -
- ... the wave. Look here, but shield your eyes first: [ http://www.thepdfshop.co.uk/ppm/defects/Wave/asp/50.asp ] [A respectful bow to BW for the pix] Could you tell us more about: * Board direction through the wave [relative to the problem bulbousity] * Component type, primary /secondary side, leads relative to wave, etc * Conveyor angle, flux, solder alloy, direction of solder flow on the wave surface ...
- 92%
wave soldering + header connector assembling problem - 11/8/07 -
- ... makes peelback from the wave smoother. Also if you can, shut the chip wave off completely. You will preserve activator if the wave is in contact with just one wave. And, if you're good enough at the artform, reduce the pump speed as much as you can get away with w/out sacrificing anything else ...
- 92%
finger markers - 10/15/07 -
- finger markers Never heard of "special finger marker stickers" for checking wave parallelism. We assume that you're talking board-to-wave parallelism. We use a Durostone fixture with a thermalcouple [TC] in each far corner of the fixture (flush to the bottom of the fixture, exposed to the wave) to measure the time lag between corner 1 and corner 2, for the purpose of establishing coplanarity of the wave to the board. There should not be a significant time difference between the temperature spike ...
- 92%
Time to retire the wave? - 5/27/07 -
- ... environmentally, and I also guess eventually would lower ongoing power costs. I think the wave is expensive in this regard. I think with the much higher temps of lead free, and the wave pot has such as huge amount of solder, that this wave must be quite a power waster, when we are only going connectors with it. Also our wave is not nitrogen, so this would be an opportunity to get nitrogen on the new machine for a nicer joint. What are your thoughts? Regards, Grant
- 92%
Micro crack for lead free wave solder - 8/10/05 -
- ... wave there is a tremendous amount of thermal stress applied to the board. The board warps when in contact with the wave and goes straight again when leaving the wave. When the board exits the wave and goes from warp condition to straight the solder joint is already solid and the stress applied to the board will create cracks with the brittle lead-free alloys (independent of composition). Reflow will not have this phenomenon because the board is not thermally stressed as much as in wave soldering ...
- 92%
wave solder machine - 5/17/05 -
- wave solder machine I would use a foam fluxer since spraying rosin will make the stickiest nastiest mess you can imagine. 18 layer board huh? You will want convection preheat, both top and bottom preheaters, preheat tunnel of at least 4-5', a chip wave, laminar flow wave, possibly a surface tension breaker in the wave like electroverts omega for example, exit cooling since these babies are going to be hot and hold the heat for awhile. When checking out a used wave make sure that all heating ...
- 92%
Solder in wave soldering: Which one is the best? - 2/28/05 -
- Solder in wave soldering: Which one is the best? This sounds a lot like a profile that is killing flux activity prior to wave immersion. What is your topside preheat temp just prior to hitting the wave? What type of preheat do you have, convection or radiant? Are you using a chip/turbulent wave in addition to the laminar flow wave? What is your dwell time on the wave(s)? How thick is your board? What is the lead to hole ratio for the problem areas? What is your conveyor angle? How is the flow ...
- 92%
Pb-Free wave Soldering - With or Without N2 ? - 5/17/04 -
- Pb-Free wave Soldering - With or Without N2 ? I am an equip mfrs rep. I took a customer to my wave solder principal's factory to run their boards on a wave with no-Pb alloy, (Sn96.5 Ag3.0 Cu0.5) in air environment. The results were excellent with pot temp of 263C (505F). Their boards are low to medium thermal mass. Some are single sided; others double sided with SMT components on the bottom side. My wave applications engineers say you do not have to have N2 to get good soldering and we proved it ...
Results
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
|
|
Back to the Top
