Cheap reflow of BGA module

[Diver300]

I've just been using one of these controllers:-
**broken link removed**

along with one of these ovens:-
Reflow Oven - REFLOW-KIT.COM

To solder down these BGA modules:-
GSM/GPRS

with lead-free solder.

I was pleasantly surprised how well they came out. There really isn't too much need for expensive equipment for what looks like quite difficult modules.

 

[BrownOut]

What kinds of heat profiles are required? And where are they specified?

 

[Diver300]

I used the standard heat profile that comes with the controller. It has preheat, soak, reflow and dwell. The time, temperature and power settings are stored in the controller and can be changed with a terminal emulator.

I don't have the figures to hand for the profile, but I can look them up if you want.

 

[BrownOut]

Don't worry about it. I was just curious about where the specs came from. Thanks!

 

[dougy83]

Cheap reflow of BGA module

That controller seems damn expensive! But I'm obviously a cheapskate.

So how did you apply the solder paste? Stencil or no?

 

[Diver300]

That controller seems damn expensive! But I'm obviously a cheapskate.

So how did you apply the solder paste? Stencil or no?

I didn't think that the controller was very expensive for something that they obviously only make a few of.

(I'm just in the process of fitting a German socket to the wall so that it can be plugged in directly not hanging off an adaptor tree)

I applied solder paste from a dispenser like this:-
SEMCO|SDV9100V/SD340|DISPENSER, LIQUID, PRECISION | Farnell United Kingdom

and I used a scuba cylinder for the air supply, taking the air from after the 1st stage regulator so at about 150 psi.

 

[BrownOut]

I thought it was pretty cheap too.

 

[dougy83]

Thanks for the link, that precision dispenser is quite impressive.

 

[Diver300]

Thanks for the link, that precision dispenser is quite impressive.

They do work well, but they seem very expensive for what they are. The modern equivalent is a lot cheaper.

OKI METCAL|DX-250|DISPENSER, PROGRAMMABLE FLUID | Farnell United Kingdom