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Date: Tue, 28 Jan 2014 09:13:15 -0500
Message-ID: <CAM2RGhROQdkxH7pA+kN0kqaEaNenyF53Ery9rZ64OgirWMGM2w@mail.gmail.com>
Subject: Re: [geda-user] 0.5mm pitch connector suggestions
From: Evan Foss <evanfoss AT gmail DOT com>
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Precedence: bulk

I have used a lot of SMT flat flex to board connectors and Ed Simmons
is correct about melting the damn things. That said the display
manufactures do not leave us much choice and if you get a connector
made from the correct material the melting point is higher.

I must admit I prefer to solder the ones that use less dense
footprints. Something like this is my preference 62674-201121ALF but
they only go up to something like 30 positions. They fan the pins out
on both sides which makes hand soldering a lot easier and it is a
glass composite.

Take a look at this one FH40-50S-0.5SV Sorry no break out board.

-Evan


On Tue, Jan 28, 2014 at 6:51 AM, Ed Simmons <ed AT estechnical DOT co DOT uk> wrote:
>
> On 28/01/2014 03:38, Evan Foss wrote:
>>
>> Ada Fruit has breakout boards for that.
>> http://www.adafruit.com/products/1436
>> http://www.adafruit.com/products/1325
>> http://www.adafruit.com/products/1492
>>
>> On Mon, Jan 27, 2014 at 7:53 PM, Peter Stuge <peter AT stuge DOT se> wrote:
>>>
>>> Rob Butts wrote:
>>>>
>>>> 0.5mm pith flat ribbon cable and comes with a small surface mount zif
>>>> connector that I think will be nearly impossible to solder to a circuit
>>>> board.
>>>
>>> It's possible to solder by hand with a good eye and a steady hand.
>>>
>>> But you could also try manual reflow. Dispense enough solder paste
>>> across all the pads, never mind paste on top of the soldermask, put
>>> the connector in place, and use hot air to reflow the solder paste.
>>>
>>> Capillary forces and soldermask rules out shorts and pulls the
>>> connector into position.
>>>
>>> Pick a connector with more material and tolerance for higher
>>> temperatures to not accidentally melt it with the hot air.
>>>
>>>
>>> //Peter
>>>
>
> We found these connectors are quite tricky too, but creating the right
> reflow profile manually using the hot air tool and a thermocouple to monitor
> the temperature made it entirely possible. They don't melt if you observe
> the correct profile!
>



-- 
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