What temperature to use with 63/37 0.8mm solder onto the perfboard for through hole components, I am trying to solder female headers onto perfboard.
270c to 300c. (temperature is not vital, its more to do with technique) A dab of solder on the iron then apply to part and add a little more solder. Let the joint heat up for a second or 2. If still not working apply a bit of flux.
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is 0.8mm solder good for soldering female pin header or should I use the 1mm solder?
Again the size of solder wont stop it working it will just mean you add a longer or shorter length of solder.
it will not create a bigger blob of solder?
hi,
flux is mandatory before solder at least until you figure out the drill.
probably perfboard is already cover with oxide and core flux from solder is not enough, as beginner you will try to add more solder. no mater what solder diameter you use, the blob is in your hand precision 
I do rub the perfboard with kitchen sponge before soldering and after that apply this solder paste
where i work, we use liquid flux for rework mandatory before applying solder, and i agree with this method
I don’t have the liquid flux, but got 4 flux paste.
I would take B and 3.2D
The surface area of the tip will have effects. The larger the area the easier it is to transfer heat. That being said you will need a bit that fits in the space you are trying to solder in. Shape will have little effect except to reduce or increase surface area.
Removing oxidisation is a good tip, but rarely needed especially if using flux.
I rarely use flux but then again I started soldering in 1980 and was employed in or around assembling prototype electronics until 2019. And have probably soldered far too much to be healthy
Make sure you clean any flux off with isopropanol or similar after use as it will corrode over time.
I use 0.5 mm for everything.
But if I need to solder something “large” then I double or tripple wrap it and twist it to create a fatter solder.
While I am already using PC fan as a soldering vapour exhaust.
Does No clean flux needs same treatment?
I have three different solder wires 0.4mm 0.8mm and 1mm.
I use either the I or B tip and it’s usually I since the pins and holes are small and close together on perfboard. Bigger tips are for bigger connections.
I almost never use more flux than is in the solder itself. the only time I’ve used extra flux is soldering leads onto WS2812 LED pads. Maybe not needed but I just want a bit more assurance the solder would stick since I couldn’t use more heat because the substrate is pretty fragile.
I am leaning towards 3.2D and B.
although I am still learning with the original tip which came with the soldering iron.
Time and temps…
Instead of using wire blocks, i’ve been soldering the wires directly to the GPIO pins on my esp boards, am fairly confident soldering but on occasion things go wrong… and if you spend too much time on a pin, without walking away and letting it cool down before trying again ( when the solder bridges 2 pins and you try to break the blob… or the wire moved at the last second before the solder hardens and you want to reposition it… etc… )
Can you get these too hot ?. .to the point of causing problems on the boards ?.. ( without any visual obvious melting or charred bits going on )
I have a few esp’s that are giving me grief and i wonder if this was my problem… or not.