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- Опубликовано: 17 окт 2024
- Extended commentary on PCB surface mount wave soldering on the Fluke 91 Scopemeter.
Original video here: • EEVblog #430 - Fluke 9...
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I agree that some (many?/all?) of my videos do "go on a bit", and that's the nature of the off-the-cuff style. I think I'm getting better at it, and more concious of time. The trade off is being able to keep the off-the-cuff style, and avoid retakes if possible, or doing any sort of rehearsing/scripting. The quick and polished videos you see on youtube take a lot of time to produce, so the trick is to get as close to that without having to do all the work...
oh come on Dave , this was the best part of that fluke video :)
You basically just covered everything I've just read in an SMT book. Thanks.
You'll also notice that there is more solder on the right-hand end of all the horizontally mounted passives too.
So well explained, Dave for president!
This was very helpful. Thank you Dave.
Thanks a lot for sharing your know how and insights on electronics.
I see wave soldered boards on a daily basis. I clean and maintain an Electra Wave solder machine at work. It makes quite nice joints, but it does bridge smaller ICs a lot. Hence our touch up stations to ensure the solder quality.
Richard Stifle im learning how to run one tommarow...no prior experience
Please scrutinize my comment. I'm not asking for his videos to be shorter, I'm suggesting he consider posting both an original vlog and *additionally* either a "highlights" version of the same vlog or simply chopped-up segments of the vlog so you can decide which portions to watch. I certainly don't want to cramp Dave's style.
I feel like there is some really obvious thing missing here. Do they flip the board over to solder it? How do all the components not fall off? How does the solder not burn them? What if some components have metal in places other than pins?
He mentioned that the individual components are glued down prior to being soldered. I assume that is a part of the pick & place process... A dab of glue is squirted before the components are dropped in place.
Just wanted to let you know I appreciate these short videos. I usually pass on watching your videos since they're generally quite long (15+ mins). I understand you can't please everyone, but if you manage to find a way to post short edits of your vlogs or simply break them into themed, bite-sized (
Thanks for this. I keep living and learning.
why would you chose to go for wave soldering? was it cheaper back then? just seams like a messy way to go. was solder paste more expensive? edit: I understand why you would solder boards that are entirely through hole but, boards that are mostly surface mount , it just doesn'
t sound like the best choice.
Well said. Long videos are great.
That red glue under the components is super tuff stuff. It feels like they're welded and trying to remove those components using hot air station is tough.
I will try and split out videos were I can. This one was a classic example. An already long video, with a 6 minute tangent on wave soldering that has appeal outside of the teardown. So it was a natural to just split it out.
does the plastic like material on the top of the trimpots not melt when the wave goes over?
"Ce que l'on conçoit bien s'énonce clairement"
I love your vids. Thank you.
That's why they're glued to the PCB. Something needs to hold the chips to the board while it's upside-down.
Nope, I use old reels of whatever was left over from various work jobs.
Instead of wave solder move, view the larger accumulation of solder as the board leaving the solder bath.
"The board have plenty of through hole components on the oppsite side (solder pads in the same side of SMD), so cannot figure the way solder using reflow,"
One option is make a tray which masks off the areas where the surface mount components are so that you can wave solder the through hole stuff without impacting the surface mount stuff.
I've also heard there are machines that can apply wave soldering to only small parts of a board.
The machines that can solder just "a small parts of a board" are Selective solders, look it up, also pretty interesting machines ;)
Sorry to be a bit thick, but I followed your explanation of this wave solder process and didn't fully understand it so I just watched another video of it on youtube. It would appear that if the legs of the ICs are to be soldered then the board would have to be upside down and the whole chip submerged in solder. Surely that's not right. What did I miss here?
Robert Lewis No, you're right. The whole entire to side of the board is submerged in the solder wave... Everything. Solder doesn't wet anything except the metal parts. It doesn't hurt them. They're exposed to the same amount of heat as a reflow oven would, except for a shorter duration.
Why!!! Why dave i ask you WHYYYY you do this to mee!!!
I have to wake up early for my university!!
And i cant stop watching your videos :)
Keep up the good work!!!
6mins wtf!?
How often would it kill chips?
Here is a question Dave, I am guessing you always use the best of the best solder. How much do you pay for a 100g reel? I dont have a lot of money and i spend 3 uk pounds for a 100 g reel! Love ya videos still x
The board have plenty of through hole components on the oppsite side (solder pads in the same side of SMD), so cannot figure the way solder using reflow, I understood that reflow cannot handle large through hole components pads, a big conector por example. If SMD were on the top, it would be reasonable to use reflow first, then insert the through ones and make a second pass using wave soldering on the ther side while SMD on the top.. Shame you need to glue the components, and the owen the epoxy
very interesting. thank you!
Nice educational video!
One question : How do they solder the really tiny stuff like cell phone boards?
watch videos of smt and wave soldering
Esta brutal man!!!!!
What can be said about orientation of soldering machine against Earths poles? :-D
@EEVblog i agree with everything you say. I work in large events and tv and can be sure you may have seen my work! My comment was aimed at radicalgarbage's reaction.. I only defend other peoples option to have a point of view or the reasons for it. If i didnt like i wouldnt watch or subscribe.. And i do/am
Err that is not a British accent! Nice video sir.
It's cool how the Brits pronounce the "l" in Solder....
Ah, so these pads were bigger for that reason!
Application-Specific Integrated Circuit.
bed time ? i don't think so...
Wow.. over reaction much?
Plus others may happen to aggree.. while it is a GOOD thing that his videos are off the cuff.. some do "go on" a bit.. . Its just a case of some videos are relavent to what I want to know and some are not.
Also be aware that not all people are capable of being "book worms" and having great concentration.. ie dyslexics (me) will just naturally drift off quicker and find it harder to study. At uni I worked twice as hard for half the grades. All people are not the same.
@ceecrb1 and @tarsius4 . With the greatest respect, I do not see why everyone with a "special" problem should be pandered to. If I had one leg, I wouldn't dare ask a shoe shop to sell me 1 shoe. Dave's videos are long because they need to be. Try and find 30 mins of big money video with actual content. Maybe your attention is drawn to the flashy lights and sounds of every thing else available, rather than the hard bits you can't understand. Forgive me for being terse, but please!
@EEVblog
I'll be the 500th person to like this video!
512 here :)
neet :D
2nd
1st
gay