A
Active8
- Jan 1, 1970
- 0
hi:
i think win asked about using an oven. here's a snip from something that
turned up in a search:
******************
I recently came across and found the idea and the performances
interesting
as I'm balancing about using BGAs for homebrewing.
They have "selected" 3 or 4 toaster ovens and as far as I understand the
important thing is that they have the power resistors on the bottom side
of
the oven. This way the IR heat the PCB and then the solder past. This
ensure
a good temperature uniformity across all the PCB's surface (even under
the
component package) and a good temperature control.
To ensure an optimum soldering quality, i.e. follow as closely as
possible
the recommended temperature profile, you could one or several
thermocouple
on a dummy board and make some measures to optimize the process.
There's still the problem of solder past dispensing which is normally
done
by printing through a laser cut steal stencil. That's of course out of
question for personnal use (cost).
******************
note: in case anyone hasn't read the page on reflowing solder paste in
an oven with SMD parts, the paste was just laid down as a bead across
all the pads and the surface tension lined up the part and cleaned
everything up when the paste reflowed.
FWIW,
brs,
mike
i think win asked about using an oven. here's a snip from something that
turned up in a search:
******************
I recently came across and found the idea and the performances
interesting
as I'm balancing about using BGAs for homebrewing.
They have "selected" 3 or 4 toaster ovens and as far as I understand the
important thing is that they have the power resistors on the bottom side
of
the oven. This way the IR heat the PCB and then the solder past. This
ensure
a good temperature uniformity across all the PCB's surface (even under
the
component package) and a good temperature control.
To ensure an optimum soldering quality, i.e. follow as closely as
possible
the recommended temperature profile, you could one or several
thermocouple
on a dummy board and make some measures to optimize the process.
There's still the problem of solder past dispensing which is normally
done
by printing through a laser cut steal stencil. That's of course out of
question for personnal use (cost).
******************
note: in case anyone hasn't read the page on reflowing solder paste in
an oven with SMD parts, the paste was just laid down as a bead across
all the pads and the surface tension lined up the part and cleaned
everything up when the paste reflowed.
FWIW,
brs,
mike