Solder mask
Hello to all readers of my BJ!
So...
Perhaps, many thought, "Here makes the people of the Board. Why do manufacturers, they come in different colors (blue, green, white, red, etc.). At one point I think) will Tell you what happened)
We need the Board itself. Already surface pickled, ready for soldering. I was here under 3 LEDs and 3 resistor
The printed pattern. Open the sprint of our project, remove all ticks from the layers and put in front of "soldering Mask". Print.
Go back to the mask.
Ordered from China a long time ago such that the solder mask green
Apply it to the Board. It is better to apply it more than necessary, the excess can be removed, but if it is less than — coverage is not uniform, somewhere brighter and somewhere darker. In the photo, I of course overdid it, but Oh well
Then put on a charge and a mask a transparent cellophane.
I left from one of the newly made boards. If it's not — fit from the flower shop. I wedding anniversary I bought my wife flowers, and while they were wrapped in cellophane asked, could they sell me a small piece of transparent. Given so, they say "a little Piece, a bouquet is not enough, you still discard")
So. Digress. Put on top of the glass and, pushing on his part to achieve uniform application of the mask. For good, the fee should be more — then it will be easier but will use the one that is
Not quite evenly, but we will not stop. Imposed on top of the printed template. Try not to touch the Board with hands so that the mask is not floated
Put the whole thing on hour under the UV lamp.
After this time get, remove the template and tape. Take the liquid nail Polish remover. I have here is this — don't stink)
Dip in it a cotton swab and the drive on the Board thereby washing off the mask from soldering
Put charge for another hour and a half for the UV lamp so that the mask is very dry. On the card it will not get dirty, but the surplus, which will be on the edges — they mazuca
Take flux
Drips on the other side of the cotton buds and drive on Board. Ludim cost. Here I have not really turned out beautifully
Well, for a sight soldered 3 resistors. The upper right some reason did not want to patsa had Makarevich and make a replacement
The rest will be soldered later)
Well, something like that)))
Good luck on the road! -=ShP@L@=-
Mask ordered from China
ru.aliexpress.com/item/FR...2419364&shopNumber=333670
The film, which covered the fee from photoresistor, it bought the electronic components, Ordyl Alfa 300
aleksandr96rus
How are You out of the House not expelled during the etching, the scent of rosin, forever disappearing liquid nail Polish remover and that, even in a day like Yubileychik Wedding, You're something, but they carved out for themselves? 😁
Smoke good rosin stomps better than alcohol.
the iron is not handy if you only stand to make. The pan is much more convenient ))))
shpala
xDDD
Well, the persecution I'm in the bathroom, or in hydrogen peroxide or chloride of iron) does Not stink) Solder using solder or acid flux — they also don't stink)
Liquid the wife has not yet enjoyed)
Well, why not?))
GGG ))) I have nearly the same. However there was a funny incident when we needed a Hairdryer for soldering bga mikruhi but besides a soldering iron is nothing nebylo, came out with a gas stove with a frying pan and a multimeter with a thermocouple. Until the pile was quite sober, the wife comes home, sees that I have something on the oven Skovorodka do all have ravished the husband to cook finally started )))) choice asks "what's fried?" I say "chip"... here she's nuts ))))) eyes were like in the Japanese anime ) wife thought I was up to the squirrels drink :-D
xDDD
Well, the persecution I'm in the bathroom, or in hydrogen peroxide or chloride of iron) does Not stink) Solder using solder or acid flux — they also don't stink)
Liquid the wife has not yet enjoyed)
Well, why not?))
How are You out of the House not expelled during the etching, the scent of rosin, forever disappearing liquid nail Polish remover and that, even in a day like Yubileychik Wedding, You're something, but they carved out for themselves? 😁
With a mind like cheap yogurt)
When I read about the mask on the Board, illuminates the UV hour. I tried it for one hour — the result was fine with me) Maybe someday and try less time.
LTI-120 very good neutral flux. For me it is for the domestics with great. It is well washed. Rosin — the last century.
relatively neutral...
he's just different, even the color is different. Bought one 3 years ago, then somewhere he got lost and had to buy another. So here is a new much worse turned out to be, although is not really another manufacturer. More mud, solder sticks much worse. In the end, rummaged in the bins and found an old, used, and newer is not used
Still like to know what the activators are added. Once I tried to solder with this flux — soldered as the same as GFR and dirt more benefits saw. But rosin is a proven classic.
ivanoff-T
By the way a couple of tips:
-Ali if you look you can find a mask and other colors like the white here: ru.aliexpress.com/item/1p...ite-100g/32424611881.html for any led products the best fit.
-I read somewhere that as a mask you can use stained glass paint more accessible and cheaper.
-The PCB is better than LTI-120 is not soldering, you can get SKF or rosin.
LTI-120 very good neutral flux. For me it is for the domestics with great. It is well washed. Rosin — the last century.
During maneuvers manual installation can be done only alcohol rosin flux, he was without any activators and additives (he KE, SKF, Fksp) Composition: alcohol 60-70%, rosin 30-40%.
TRL -120 — Ingredients: ethyl alcohol (66 — 73%), rosin (20 — 25%), activators — aniline hydrochloride (3 — 7%), triethanolamine (1 — 2%)
Aniline hydrochloride is hygroscopic — can from the air "nasasyvayut" moisture amount of more than several times.
Triethanolamine or nitrilotriethanol is a viscous hygroscopic liquid. The same "sucks" moisture from the air.
Even after washing of modules in ultrasonic baths-the chips are still scanty remains of this muck, six months later, chip corrode so that the legs fall off, even while being covered with the waterproof layer.
Well, in principle, rosin is not quite neutral, and alcohol+rosin too. In General, the issue of washing any flux — one of the very difficult. So depending on the application and are selected by their fluxes.
Activators remain under the components, then over time they nasasyvayut moisture from the air and begin to react with copper, even under a layer of varnish. We at the company under penalty of dismissal is prohibited to use a TRL 120 when soldering chips, only when tinning it can be used.
ivanoff-T
Soldering acid is even worse. It's all active fluxes, they are conductive if they are not carefully to wash off in the scheme, then all sorts of miracles will be. Soldering acid is good to solder steel and copper wire, printed circuit boards, radio parts good alcohol-rosin flux or just rosin. You can solder from flux buy and if prilovchitsya simple things without extra flux to solder.
But the way the LTI-120 is alcohol-rosin flux: "ingredients: pine resin, ethyl alcohol, activators"
I looked for the interest in Internet shopping import written with the flux, the domestic rosin. I understand rosin flux too :-)
Soldering acid is even worse. It's all active fluxes, they are conductive if they are not carefully to wash off in the scheme, then all sorts of miracles will be. Soldering acid is good to solder steel and copper wire, printed circuit boards, radio parts good alcohol-rosin flux or just rosin. You can solder from flux buy and if prilovchitsya simple things without extra flux to solder.
Thank you)
White already ordered)
About paint will look, read
Need LTI-120 first spend) And soldering acid as? The rules will be?
By the way a couple of tips:
-Ali if you look you can find a mask and other colors like the white here: ru.aliexpress.com/item/1p...ite-100g/32424611881.html for any led products the best fit.
-I read somewhere that as a mask you can use stained glass paint more accessible and cheaper.
-The PCB is better than LTI-120 is not soldering, you can get SKF or rosin.
there is still a 'no clean' liquid flux, liters shop Pro, a strong thing, but poisonous, because without drawing solder only rosin
Good old rosin with alcohol, and the soldering tip oblique cutter, that's the secret of a beautiful soldering SMD resistors)
the most important thing that the Board is healthy, liquid with vitamin B5))) and good rules came out
ivanoff-T
There are special varnishes. The first thing I found: platan.ru/cgi-bin/qwery.pl/id=458160386 www.chipdip.ru/product/urethan-71-200/ . These expensive, should be cheaper.
plastic 71 serves as a protection fee from the aggressive environment... it is a colorless... and the Kama later-I'll have to unsolder from the Board under this Polish is very long mother and remember the plumber...
shpala
For nails?)))) Or is there a special of some kind?
There are special varnishes. The first thing I found: platan.ru/cgi-bin/qwery.pl/id=458160386 www.chipdip.ru/product/urethan-71-200/ . These expensive, should be cheaper.
shpala
I'll try at leisure), Many talk about zapolek) Became interesting)
take PVA glue... zapalac... apply the PVA glue where I don't want capinlac stuck. next, evenly! you zapalac and wait for it to dry... after drying, caponata proteges balls with glue and go under the water and wash away the glue remnants and stragglers of caponata...
PS I use this method... at the moment made a airbrush under zapalac... and quickly and reliably, and not need to bother with Keith chemistry...
mikvol21
Does zapalac and greased with, after soldering, with all the contacts gyyy. Time savings — huge)
I'll try at leisure), Many talk about zapolek) Became interesting)
I wrote that and why to do in the workplace. The homemade mask is purely for aesthetics.
the solders on the road and not out))) Also, lacquer and drip if this is inaccurate)
The mask is applied before soldering, the solder does not fall where it is not supposed to. Varnish is applied after brazing to protect from moisture and dust.
Does zapalac and greased with, after soldering, with all the contacts gyyy. Time savings — huge)
Yes) Seen this way, but the boys were covered with something like frames of pictures, but instead the glass was either mesh, or fabric... I do Not understand, frightened and did what was on hand)
Luck as for screen printing apply —
Apply the mask on the Board, then is covered with a thin mesh, e.g. a ribbon for the bows (girls hair in the school on the line, there are quite wide). The excess squeezed, and pulverized, for example a plastic card. Tape removable — perfectly uniform coating PCB mask.
ALL4SWAP
If you estimate labor costs for this technology, the cost of materials and the cost of treatment from inhalation of Chinese chemicals, in 20 years (for those who are going to live at least another 20 years). It would be cheaper than just a normal Board book
All these calculations make sense when you have a choice: spend time or money. And when money is not stupid by any measure — to do something right.
If you estimate labor costs for this technology, the cost of materials and the cost of treatment from inhalation of Chinese chemicals, in 20 years (for those who are going to live at least another 20 years). It would be cheaper than just a normal Board book
mk4f
We in the defense masks are not used — all after the installation of the elements of the varnish due to operating conditions.
We have 50/50. Old items, years ' 80s, those Yes, are without masks, and they have everything from masks. Right under UR-231 are both.
We in the defense masks are not used — all after the installation of the elements of the varnish due to operating conditions.
pow-pow
on the subject of fluxes and rosin.
hooked on this thing
www.chipdip.ru/product0/9000088859/
and
www.chipdip.ru/product0/9000067072/
covers 90% of my soldering needs, the more we have in rubles for 20-30 found)
cream is not a big expense, non-toxic, perfectly soldered SMD, then the remnants of alcohol or acetone washed.
Saw YouTube as the asset is being prepared: isopropyl alcohol and ethyl alcohol 1:1, to dissolve simple resin until perusteet. Soldering turns out like a factory.
Well tin, if you are not lazy — alloy rose) Properly, talk) if lazy — soldering iron)
Thank you) Will know what to look for)
This is a must try, I love this thing to solder) it in the air is almost dry.and for example to about zaludit, it is necessary to smear slightly and touch the tip with solder, and everything is perfect)
In General, it is much more convenient liquid rosin with alcohol, less dirt from it + if not active, then you can not wash away
Oh, that's what I saw on vitrine in the shop))) But the goal was to buy a flux))
Thank you very much and read at your leisure)
on the subject of fluxes and rosin.
hooked on this thing
www.chipdip.ru/product0/9000088859/
and
www.chipdip.ru/product0/9000067072/
covers 90% of my soldering needs, the more we have in rubles for 20-30 found)
cream is not a big expense, non-toxic, perfectly soldered SMD, then the remnants of alcohol or acetone washed.
I have been collecting electronics for deep-water equipment, can you recommend a good things
Thank you))) I Feel the weekend will hold reading reviews, the selection and testing of chemicals for soldering))
Yes nezachto)...
yet bear in mind that this technique is not limited to only resistors)))
Too much solder use! Either the soldering iron is too small... and therefore clumsy)
those drops that you put on the contacts as tinning, will be enough for most soldering.
soaked contact renuka flux, put on the pads and heated the solder on them with a soldering iron... melt he will climb on the contacts of renuka and clutch... and there will be no "blam"))
Yes, not really much))) At the time Yes, 2.5 hours out, but this time, you can do something else)
I read, looked on YouTube, ordered reipu Ali, the whole bus is 3 wires and the colors expose to everyone what Hosh! 400 rubles 50 PC + Arduino for 115 R.
The modules and units covered by additional insulation spray
From 3M Scotch 1602. For Navy are.
The stores won't tell you — taking in Moscow at the firm.
From the pros — beautiful and durable finish dark orange colour,
cons — house to work with him impossible, dukhovity excessively.
However, it dries quickly.
And why is the solder mask for the product of a single Assembly? :\
is that purely to potamonautes
LTI disappears quickly, I usually use chenit thicker. deaktivirovana kakayato rosin was kind of like the nougat from the Snickers)) and informationby flusic also supposedly a consistency
Well I have a couple of drops on a cotton Bud and took on Board. For tinning early enough)
little flux... therefore, such a smear on the contacts...
and what of the film on which the pattern was printed?
zolotov1987
and phosphoric acid and rinsing+drying water after soldering. (like a factory)
"the plant" to water washing even soda solution washed (well, us anyway))))
solvent 646 is necessary if the paint powder on the motherboard, or alcohol. in GTD.for varnish there is no solvent. she current holds.
after tinning, wipe the Board with liquid varnish remover and my stiff sponge with fairy)
shpala
And they both are) LTI advised to try
and phosphoric acid and rinsing+drying water after soldering. (like a factory)
th you some of LTI's the 21st century, active without washout fluxes on wax basis. how to repair phones and so on. or acid for soldering but then her water to wash...
xDDDD I'm at work explained what's in my syringe with needle oil everyday and not drugs))
I remember my mother found me in manenko thermal grease syringe, lot of questions))) hahaha
The most banal — it's beautiful) and so protect the Board from scratching, moisture and other
Flux plus PI*dates, but not a panacea, I enjoyed it and right now since it is not 300 but 1000 is paranel to another flux for soldering SMD, color and consistency very similar to flux, but is 10 times cheaper. Suggest to pay a visit to radio and require soldering flux for SMD does not require washing, cheaper 100-150r not advise to take, I took it at 250 degrees to boil begins to smear it all around.
honestly speaking, these used last time 15 years ago. Here is the correct flux www.partsdirect.ru/goods/13583/ you know that's expensive for an Amateur soldering.
And yet perhaps you're using lead free solder.
And, well, if he gave the lamp — Toda hood, you can play :)
And it throw this Ryazan Institute of technology...
Oh, vey! Ryazan flux... Also somehow drastically needed flux in a nearby storage shed was exactly like here on the photo. Smell — disgusting (of course, in isopropyl alcohol), the quality of the service sucks, stain much... Threw nafig. In another warehouse caught the eye of VDI Connector from St. Petersburg-and is a totally different matter.
Well, today, Chinese soldering YaXun YX-223 — quite a useful thing! But with him there are problems when soldering certain metals with which the LTI was handled without problems (for example, the USB pin-connectors — torment already). In this case, the first tinned the leads of the component LTI, washed and solder YX-ohms.
On the subject — the mask, of course, it's fun, fee looks kosher. But for this you have to look for a UV light is not very cheap. So, I'm old-fashioned — all exposed copper thin obsluzhival :)
25 -30 years ago
we fiberglass the usual green divorced
with acetone and the solvent was painting
for beauty
and to circuit and cliffs to the light
it was easier to watch
Naturally the Chinese are doing it EN masse and equipment)))
Tried caponiac — smelly thing, decides to abandon her...
Method is great, only it is worth to mention that the Chinese brothers is doing wrong and on an industrial scale, without dirtying your hands. Love for the sake of beauty, I would not bother, but if for example a piece of Board will be visible for aesthetics easier then a colored lacquer coating.
shpala
Ludyat track, sometimes the area around them. Mask for beauty and protects it cost of external factors (scratching, etc), but this record just for beauty)
charge he poisoned ?
So I say that for beauty, you can paint the marker quickly and beautifully, and of course it turned out not bad just a little solder touch up and can be used for illumination. Maybe with time he will Board rivet under the order.
Ludyat track, sometimes the area around them. Mask for beauty and protects it cost of external factors (scratching, etc), but this record just for beauty)
Che, I don't understand, I thought the cover Board that they would not be oxidized and to spend less tin. If the bastard tin this way will go, but it's easier to poledit, and the cost to paint marker in any color. Don't know what fluxes, do not do it, but not far 90 we ludilo tablets of aspirin, one drop of tin was enough to cost size 5*5 cm and not more than the track did not differ from the factory.