This method looks very easy. But practically it is not. Usually we happen to do this kind of work as a rework. There are many parts already installed nearby. Here there are no other parts, no pads connected to ground. The thermal pad of the chip was ignored. And the board appears to be a double sided (two copper layers) only. When it comes to a board of eight ten layers with heavy density of copper and several pads connects to ground , picture is completely different. We have to use a hot plate to preheat, under the cradle, which holds the board and place everything under the microscope. Then we have to perform the soldering as in the video, sometimes with the help of hot air gun. Everything should be done very carefully, taking care not to burn any connector or part because under the microscope we can see very limited area only. When we perform our duty very carefully, the worst thing is our employer used to bring his laptop to show us these type of videos and points us " See , how quickly the youtubers do this."!!!!!!!!!!!
For hobbyist projects you make sure to make PCB designs that make manual assembly easier. You don't use the smallest pitch ICs or 0603 passives etc. And chips like these are often soldered with solder paste and hot air.
This method only works well for a footprint designed for "handsoldering" with iron. That is why pads on breakout board are long enough so it is easier to get heat transfer with regular soldering iron tip.
The advantage you have here is the large pads to allow you to use a relatively large tip when soldering. It's sucking the solder up from the joint. Problem is that when you follow the manufacture's footprint guide you get minimal area. In production thankfully I'm using a stencil and a convection oven. But sometimes I do need to rework these devices and what I do isn't too dissimilar to this video. Using a large chisel tip iron, lots of flux (liquid rather than paste) and make a big blob of solder to be dragged along the side of the IC. Replacing these ICs you need hot air. What I've also found is that with ICs that have a large thermal pad you also need to add a heater underneath the board. Set it to 100 / 150C so that your hot air has less work to do. You'll do less damage, or none at all, this way! Replacing just carefully put down some solder paste, you don't need much, and then again back to the hot air. But they really are an absolute pain these packages!
@@hugepines3990 We now have 60x60mm 3488 pad packages (80amps), these need everything correct to get them working. I still believe the 56 Gbaud are the hardest, everything needs to be perfect.
Платон Карпов, цель была убить микросхему? "Пузо" к плате паять надо обязательно. И потом каждый слесарь знает где бывают дырки. Отверстие это не мешает никак. Феном не феном, а залудить выводы микросхемы перед пайкой обязательно надо (Есть исключения. Но не в данном конкретном случае.). )
if you didnt notice the best joints he did was the 2nd row when he did only a few at a time and started away from it and slid in lightly touching the side of the chip with the tip only... 2:45 But here is a question the small brown pads in the corners is that for automated grip points or they maybe ground or heatsink contact points or something? also long as the trace isnt damaged you can always paint over trace cover with a matching clearcoat and use alcohol to blend the edges.
The brown bits are exposed parts of the leadframe that have been cut flush, they help to keep the leads and the IC from moving while they encapsulate the part. The leads are cut and trimmed and the rest of the leadframe is removed at the same time.
I see this particular package type causing a lot of cold solder failures in equipment we repair. Seems that the TQFP packages are better as their actual leads are more capable of dealing with thermal expansion?
NEY Industries, ну это логично, но по факту я так понимаю это делалось что бы сделать видео перфекциониста. Так же можно снизу прогреть и подложка прихватится
Nice video, love the wave effect. It's so easy on boards without ground planes and on leaded solder though. And no thermal pad. Can be a living hell without preheater on bottom and proper temperatures/times.
У этой микросхемы должно ещё припаиваться пузо, поэтому - термофен. Нужно облудить все контакты до пайки. То, что ты показал - конечный этап для контроля посадки микросхемы.
Если так на печатке запаять - не сложно. Плюс брюхо не пропаяно. Я паяю так: аккуратно залуживаю посадочное место и чип. На чипе должны получиться бугорки на выводах. Совмещаю чип и посадочное место. Грею феном до момента посадки. Проверяю микроскопом правильность посадки.
Hey all, I've been trying to find some flux cleaner like OP used in his video. The dispenser looks pretty practical, can someone point me to where I could find that kind of bottle ? Thanks !
You forgot to solder the thermopad/GND Pad that located underneath the chip ,which may be very important for the performance of chip align with the specification.. when soldering QFN with thermopad . hot air soldering and drag soldering method shall be applied
Nice debating if I should get cheap hot air gun or just use my soldering iron to add the 2nd m.2 connector and the capacitors for my laptop MSI decided to leave off.
And with high speed signals (these are not), you cannot solder to the leadframe (side of package), well you can, but it reduces high speed preformance.
@@user-rs8zg8ey2b Why is that? I was under the impression those were just test points and if solder sticks to them theres no issue. I'm curious why that would impact high speed performance?
@@MadJDMTurboBoost My company is doing the bleeding edge of tech, high speed data, each year we reduce the sice of the ac coupling caps, 0402, 0201, 0105, etc, each disturbance of the high speed signal has a reflection, the smaller the component the less reflection. The pads on the part keeps getting smaller, so now you cant solder to the leadframe like I did 5+ years ago, it just screws with the signal (in a bad way).
Can you recommend a comprehensive tutorial about the basics of IC technology? (PCB fabrication, main surface amount elements and their function, main applications)
Neat, but not a QFN soldering you expect :) The "real" one is not much harder though, the main difference is you also have to tin the package terminals to get the same pillow shape as you got on the PCB pads. And better use a blowtorch with a catalytic nozzle as advised in some (can't recall which one exactly) repair note instead of hot air gun, makes things way easier as nothing gets blown off.
Hello. I am outsider from Russia. I saw this video about 5 months ago. So I've remember, that time there was another music composition on the background. Can you send me the name of the composer and how his composition is called.
Soldering has never been so emotional
Emotions harm business. Emotions are not bad, but very dangerous.
Tears dropping from my eyes while watching it :'(
And soothing, calming and
relaxing.
Everyone must agree that it is way better than that annoying beats in viral diy videos.
If you really loves work , then Brain will release good dopamine 😊
good presentation 🎉
This method looks very easy. But practically it is not. Usually we happen to do this kind of work as a rework. There are many parts already installed nearby. Here there are no other parts, no pads connected to ground. The thermal pad of the chip was ignored. And the board appears to be a double sided (two copper layers) only.
When it comes to a board of eight ten layers with heavy density of copper and several pads connects to ground , picture is completely different. We have to use a hot plate to preheat, under the cradle, which holds the board and place everything under the microscope. Then we have to perform the soldering as in the video, sometimes with the help of hot air gun. Everything should be done very carefully, taking care not to burn any connector or part because under the microscope we can see very limited area only.
When we perform our duty very carefully, the worst thing is our employer used to bring his laptop to show us these type of videos and points us " See , how quickly the youtubers do this."!!!!!!!!!!!
вот и хуй-то!!!а автору похуй на это!......и это,я бы слал на хуй таких клиентов!!!
For hobbyist projects you make sure to make PCB designs that make manual assembly easier. You don't use the smallest pitch ICs or 0603 passives etc. And chips like these are often soldered with solder paste and hot air.
Next time your employer says so, ask him to hire the youtuber.
@@NicolaiSyvertsen Yes
@@ManishKumarIITG 😂😂😂
Dont forget the power pad under the part, you need hot air to mangage to that :)
it can also be achieved with soldering iron from below since there is thermal connection
This method only works well for a footprint designed for "handsoldering" with iron. That is why pads on breakout board are long enough so it is easier to get heat transfer with regular soldering iron tip.
Two o'clock, middle of the night and I’m watching some random dude soldering... Good night
The same, at 3am. Two years later in the middle of pandemia.
3 am and us
Same but in 2021
3:25 am
Excellent macro photography and editing. Perfect soldering technique 👍👍👍👍👍
I managed to weld a 0.5mm QFN 28. I learned with you. Perfect! Thank you very much!
I think there is a big issue, no solder on the ground/central pad if it's necessary.
The advantage you have here is the large pads to allow you to use a relatively large tip when soldering. It's sucking the solder up from the joint. Problem is that when you follow the manufacture's footprint guide you get minimal area.
In production thankfully I'm using a stencil and a convection oven. But sometimes I do need to rework these devices and what I do isn't too dissimilar to this video. Using a large chisel tip iron, lots of flux (liquid rather than paste) and make a big blob of solder to be dragged along the side of the IC.
Replacing these ICs you need hot air. What I've also found is that with ICs that have a large thermal pad you also need to add a heater underneath the board. Set it to 100 / 150C so that your hot air has less work to do. You'll do less damage, or none at all, this way! Replacing just carefully put down some solder paste, you don't need much, and then again back to the hot air.
But they really are an absolute pain these packages!
I u u
77ii
QFN are a breese, csp even easier, what is tough is the new 56 Gbaud packages.
@@user-rs8zg8ey2b BGA1156 ;P
@@hugepines3990 We now have 60x60mm 3488 pad packages (80amps), these need everything correct to get them working. I still believe the 56 Gbaud are the hardest, everything needs to be perfect.
А пузо-то не припаял? Надо-бы сначала феном...
У него просто для показа, так задевает, а тебе конечно, феном надо будет угреть
Дыру видел в плате под микорсхмой? Второе, у него была цель пузо паять? Или ноги тока?
Вот вот, а у пуза как обычно земля и микруха не заработает, или вообще в аут уйдет!
Перегреется и сдохнет, так нам и надо.
Платон Карпов, цель была убить микросхему? "Пузо" к плате паять надо обязательно. И потом каждый слесарь знает где бывают дырки. Отверстие это не мешает никак. Феном не феном, а залудить выводы микросхемы перед пайкой обязательно надо (Есть исключения. Но не в данном конкретном случае.). )
not good, need thermo fan for soldering central thermopad chip
Damn... the music makes it soooo refreshing
I've never seen something so beautiful in my life!
the saddest qfn soldering video... :-(
when said "unfortunately solder mask damaged..." plus the music, I almost cried
They use the video plot in latest movie, really sad. The move title I think "You beautiful feet shower my lip"
i like your confidence anchoring the second spot without checking if there is any misalignment..
Thanks for making this video, I'm getting in to SMD/SMT boards myself and this video was very well presented and explained :) I'll subscribe :D
Tut tut 6⁵⁵33 a eoyeruyuey3y3ygggegertgrte tree teddy toy tree
Perfeito! Eh gratificante e relaxante ver um trabalho assim bem feito
watching this makes me ask myself why I waited so long to get into SMD (as a hobbyist)
Be prepared to practice for a long time.
if you didnt notice the best joints he did was the 2nd row when he did only a few at a time and started away from it and slid in lightly touching the side of the chip with the tip only... 2:45 But here is a question the small brown pads in the corners is that for automated grip points or they maybe ground or heatsink contact points or something? also long as the trace isnt damaged you can always paint over trace cover with a matching clearcoat and use alcohol to blend the edges.
The brown bits are exposed parts of the leadframe that have been cut flush, they help to keep the leads and the IC from moving while they encapsulate the part. The leads are cut and trimmed and the rest of the leadframe is removed at the same time.
Dude, you make this look like art
MUY BUENOS TUS VIDEOS GENIO NOS INSPIRA A TODOS LOS QUE HACEMOS ESTO SALUDOS DESDE ARGENTINA
Very nice work. Great close-up.
I see this particular package type causing a lot of cold solder failures in equipment we repair. Seems that the TQFP packages are better as their actual leads are more capable of dealing with thermal expansion?
Hmmm. And what about a big central thermal pad? It can't be done without a fan, isn't it?
MrDatagor i think there should be heat sink paste under IC chip
Some vias holes in thermal pad allow you solder on top or bottom layer by soldering iron
Agree!
And some ICs have on this pad GND power pad. We are using hot air gun for these chips
Androkavo and what if no holes on the other side??? And it's 90% of the time
А подложку припаять?
Если микруха не нагревается то не нужно
Подложку потом на саморезы там есть дырочки
NEY Industries, ну это логично, но по факту я так понимаю это делалось что бы сделать видео перфекциониста. Так же можно снизу прогреть и подложка прихватится
у Россмана гораздо лучше видео по пайке "qfn + Rossman"
ruclips.net/video/mr1UVPsExiE/видео.html
С обратной стороны олова лупануть через отверстия
Nice video, love the wave effect. It's so easy on boards without ground planes and on leaded solder though. And no thermal pad. Can be a living hell without preheater on bottom and proper temperatures/times.
Какой микроскоп вы используете?
Where did you get that metal siphon you had on top of the alcohol bottle ?
1:12
Why we need flux on the two corners ? (or it is soldering paste?)
What kind of flux can be cleaned by alcohol?
*C'est bien présenté, j'ai compris maintenant comment souder ce type de composants. Merci*
What type of microscope you use??? And thanks for the videos saludos desde mexico
Muito bom seu trabalho, deixo aqui saudação do Brasil.
If there was a reaction of I love it on youtube I would put it ... that work so neat and perfect I loved it
У этой микросхемы должно ещё припаиваться пузо, поэтому - термофен. Нужно облудить все контакты до пайки. То, что ты показал - конечный этап для контроля посадки микросхемы.
Very professional, excelent work
I preffer to use hot air to sold QFN's packages, specially because the central pad!!!
Funny, taking a QFN package and soldering it to an extension board...
Good soldering though!
Sometimes it is required when you need to test the circuit on breadboard.
Why is your image so clear compared to others, I've seen, doing the same thing with a microscope?
hi Adam, we are selling microscope, you can see them in my channel.
This is such a beautiful video
you don't need any soldering for central Ground pad? oh, there are some people mentioned.
I solder QFN with hot air in 1/100 of the time. The best moment is when the QFN allign itself.
Please show 🧐
Если так на печатке запаять - не сложно. Плюс брюхо не пропаяно.
Я паяю так: аккуратно залуживаю посадочное место и чип. На чипе должны получиться бугорки на выводах. Совмещаю чип и посадочное место. Грею феном до момента посадки. Проверяю микроскопом правильность посадки.
And what about the power pad? how did you make the soldering?
Huw abouut the heatsnik pad at zee underzide ¿
I enjoy listening to the backgrond music.... very relax.
Me too, you can find it here ruclips.net/video/pGGmxfQ9oBo/видео.html
Simply the best !!!
👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻
That was nicely done!! What magnifier do you use?
You make this look really easy although I know that it is not, especially with a soldering iron. You must have done this for quite a while now.
Прекрасная пайка,очень аккуратно и с умом!
3:49 How is this thing called?
On ebay write: Dispenser Cleaner Pumping Alcohol Liquid Press Bottle Nail Polish Remover.
Great job, congratulations! What is the make and model of your microscope?
3:57 where can I buy this bottle?
Excelente pero una duda la parte de en medio no es necesario soldarla?
Hey all, I've been trying to find some flux cleaner like OP used in his video. The dispenser looks pretty practical, can someone point me to where I could find that kind of bottle ? Thanks !
You forgot to solder the thermopad/GND Pad that located underneath the chip ,which may be very important for the performance of chip align with the specification.. when soldering QFN with thermopad . hot air soldering and drag soldering method shall be applied
Просмотрев видео вспомнил ролик где чувак говорил это просто охуеный зум 🤣
very nice, but some have a middle leae part, joined with one of the pins, I suppose then one cannot avoid hot air is not it ?
Hello !
What kind of camera do you use to record videos?
Verry clear image.
Thank you
Still came out clean and perfect!
Nice debating if I should get cheap hot air gun or just use my soldering iron to add the 2nd m.2 connector and the capacitors for my laptop MSI decided to leave off.
What is the temperature when you solder this IC?🙏🙏🙏
How's underneath on that one how you engage good connection if there's no re-heat under components.
0:44 did not understand what happened. Please explain
Hot air gun
It is a totally different ball game when those leads are not this long. Which is 99.9 percent of the time. But thanks for the video
And with high speed signals (these are not), you cannot solder to the leadframe (side of package), well you can, but it reduces high speed preformance.
@@user-rs8zg8ey2b Why is that? I was under the impression those were just test points and if solder sticks to them theres no issue. I'm curious why that would impact high speed performance?
@@MadJDMTurboBoost My company is doing the bleeding edge of tech, high speed data, each year we reduce the sice of the ac coupling caps, 0402, 0201, 0105, etc, each disturbance of the high speed signal has a reflection, the smaller the component the less reflection. The pads on the part keeps getting smaller, so now you cant solder to the leadframe like I did 5+ years ago, it just screws with the signal (in a bad way).
Great footage quality. I would aprecheate voice over music. Explaining stuff, pros and cons. Etc.
Can you recommend a comprehensive tutorial about the basics of IC technology? (PCB fabrication, main surface amount elements and their function, main applications)
for the central ground pad , I would put solder in the hole , from the bottom and heat the pad through the hole with my soldering iron.
In which temperature you soldering?
Thanks for making this video super my friend
มาเป็น Fc sub ใหม่ครับ
what was the dispenser/dish you used for your alcohol??? iwhere can i get one???
www.aliexpress.com/item/Plastic-Press-Pump-Nail-Polish-Remover-Disinfectant-Fluid-Alcohol-Container-Bottles-Holder-Press-Empty-Clear-Convenient/32798426521.html
Very nice which tools you use plz tell me I'm waiting for you sir
this is so satisfying
True😋
Concur. Most therapeutic... N relaxing I find when replacing large SMD ICs.
You missed the power dissipation pad.
What did the first one you polish with before the solder?
actually makes me think doing a QFN might be easier since the tabs are so small and less likely to bridge than TQFP.
what camera do you use for filming?
Neat, but not a QFN soldering you expect :) The "real" one is not much harder though, the main difference is you also have to tin the package terminals to get the same pillow shape as you got on the PCB pads. And better use a blowtorch with a catalytic nozzle as advised in some (can't recall which one exactly) repair note instead of hot air gun, makes things way easier as nothing gets blown off.
Hello. I am outsider from Russia. I saw this video about 5 months ago. So I've remember, that time there was another music composition on the background. Can you send me the name of the composer and how his composition is called.
i am crying when i see what you do
He's not THAT bad.
you make it look so easy
excuse me.. want to ask.. what solder tip you use.. and what solder type
How to make sure its connected or not short circuit if there is another components already solderd?
Нижняя часть неприпаяна? Ссылки на флюс и очистительные средства есть?
Красиво, но все равно дизлайк, за не припаянную землю. Через нижнюю площадку так же осуществляется отвод тепла.
Ладно тепло, есть микрухи которые еще и питаются с нее!
да видно забыл показать как перевернул плату и пропаял подложку... 😜
Евгений Скрипиль кто такие микрухы !? )
@@TinTaBraSS777 не микрухы, микрухи!
You didn't soldering center thermal pad and using more flex on rework.it is very easy work .
nice video, which micro camera you used by..?
Что за штука, где спирт содержится? Воспользовались во время чистки флюса. Где можно купить или заказать?
Use flux to fix the QFN-chip looks like a good idea. I will try this method later.
Did I miss any thing or you really didnt solder the mid grounding section?
How is this pumping bottle called in English? The one where your alcohol is inside?
Did you pre-tin the QFN IC?
Original component has a tin layer on bottom- terminals and thermal pad ( not on side of component, where copper is visible.)
Theres that damb toothpic and same can of flux....😌 love it lol.😃
Красиво! Спасибо!
What about the center/bottom ground connection commonly found on RF amps in this package?
I think that's what the holes are for
What soundtracks are you using in this video? Anyway nice tutorial and keep making them!
Follow timeline : Get Outside - Jason Farnham -> That positive feeling -> Shining the morning
Hello, Andro! Happy New Year! :)
What is the napkin you used for flux cleaning? Can you share a link?
Happy New Year Datagor :)
I used paint brushes and a piece of cotton wipes, similar this : goo.gl/WzfY5u
Oh, yes! That is it! Lint Free cotton Wipe Pads
MrDatagor You can also use coffee filters. You can get tons of them for a dollar at most places and they're lint free.
what is the magnifying system that you use?
Magnificent, dreadful and sad at the same time.
Hi Frend, could you tell what materials do you used?