Electronics > Beginners

Soldering a 0.5mm pitch FPC connector

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SolderOcelot:
So I'm going to try to solder a keyboard connector on a MacBook A1502 and it I'll have to solder 30 pins with (I believe) 0.5mm pitch distance.

Is this doable without a heat gun? So just a soldering iron with a very sharp point?

Any other tips will be helpful as I'm a beginner.

Sudo_apt-get_install_yum:
This is doable, use really thin unleaded solder and lots of flux. You need a really narrow tip on your soldering iron!
Forgot to mention, post a picture and it would be easier to give more accurate advice!

langwadt:
a too sharp point isn't necessarily the best, you need flux and maybe some solder wick

https://youtu.be/5NSSsKfU4rA

SolderOcelot:

--- Quote from: Sudo_apt-get_install_yum on November 09, 2018, 03:00:12 pm ---This is doable, use really thin unleaded solder and lots of flux.

--- End quote ---
Cool! So could you tell me why unleaded solder would be better? I'm all for saving the environment but that aside.


--- Quote from: langwadt on November 09, 2018, 03:09:19 pm ---youtube video

--- End quote ---
Will be sure to check this out as well

Buriedcode:
I think the point is that proper flux and temperature controlled iron is arguably more important than technique.  I often see people talk about drag soldering on this forum like its some unique technique but with adequate flux, a decent (temp controlled with a smallish tip) iron it can actually be quite hard to make solder bridges.  Regardless of whether you "drag", or touch each pin one at a time with a tiny bit of solder on your iron, doesn't make a difference, let surface tension and flux do the work.  So yes, experience helps with knowing what tip to use, and what temperature, but there isn't anything magical or even skilled about "drag soldering".

For connectors, you can of course use hot air, I worry about the plastic parts and try to shield them as best as possible. The connectors are designed to withstand the soldering profile of an oven, but with manual hot air, it can be quite easy to melt the plastic of the connectors given that their temperature is a function of hot air temp, air flow, distance from nozzle to board etc.. So if you can get your iron in there - I'd do it that way.

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