looking for company doing pcb assembly

[aliyesami]

i am still unable to find a good affordable companies for mounting small foot print components on pcb .
how are hobbyist doing it ? Is it possible to solder such devices at home by one self ?

 

[jpanhalt]

Is it possible to solder such devices at home by one self ?

Absolutely. I am 70+ and my hands are not at all steady. Still, I do 805-size components. 1206-size are relatively easy. Use a decent iron, pointed tip, a magnifying visor, and learn some of the tricks, including ways to reduce unsteadiness of your hands.

John

 

[aliyesami]

can you plz check out the molex connector part number 54132-4062 which is a 40pin FFC .5mm pitch connector and tell me if its solderable by hand?

thanks

 

[jpanhalt]

Yes, I believe it is hand solderable. I have never soldered that specific device, though.

Here are two tutorials dealing with hand soldering fine-pitch components:

https://store.curiousinventor.com/guides/Surface_Mount_Soldering/QFP/

https://www.silabs.com/Support Documents/TechnicalDocs/an114.pdf

I have never used a wire, as shown in the second link, to stabilize something. One key is to have fine solder wick available to remove any solder bridge if and when you get one. On occasion, I will also use a micro-drop of medium cyanoacrylic (CA) adhesive to stabilize a part.

John

 

[aliyesami]

hi John!

i have soldered QFP package with no issues but this molex connector is much smaller i will give it a shot though and let you know.

thanks

 

[aliyesami]

here's my concern :
TQFP package measurements :
pitch = 0.8mm
pad width = 0.45mm

MOLEX FFC-40PIN connector measurements:
pitch = 0.5mm
pad width = 0.2mm

so you see that the molex connect is almost twice smaller than TQFP package.
as I stated I am ok with soldering TQFP package but was wondering if anyone has soldered the Molex type package with that small measurements.
I will try though as soon as I get my pcb which is being made and report back