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Rebel Boards...
fresh thinking outside the "Star"... |
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We now produce two Rebel LED boards. Both are gold plated, copper clad boards
for the Luxeon Rebel LED. We present
the Rebel Square and the Rebel Circle. |
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Both designs standard FR4 copper
boards with captive mounting holes that are bonded top and bottom to
transfer heat down to any normal heat sinking mounting surface below.
We have also added some bonded through hole vias to increase the bonding
between the top and bottom of the board.
These boards are extremely easy to work with
and soldering couldn't be easier because you can apply heat from the
bottom of the board until the LEDs settle into place on top of the board.
Heating from below removes almost all risk of damage to the LEDs from
heat. Almost anyone without formal technical soldering
skills can work this board.
Normal copper clad board are the best for LEDs and nothing works better for the Luxeon
Rebel LEDs.
Click here for
Rebel Square Board Prices and Services
Click here for
Rebel Circle Board Prices and Services
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Low Cost
Rebel Boards are built on standard
well understood copper RF4 technology. The top and bottom layer
are joined by heavily plated vias through the board. This
approach is a standard in the industry and it is a time tested approach
to thermal management.
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Superior heat sinking design with heavy
copper vias and copper base
The physics are pretty simple.
Very few metals beat copper for heat sinking capability. The
longitudinal channels in the copper serve as "wells" to help
contain excess silicone heat sinking compound. Excess compound can
also easily exit through the vias. There is no danger in
trapped heat sinking compound putting upward pressure on the board
(causing some other larger metallic LED boards to warp when mounted)
Gold plated for beauty and
smoother protective surfaces
What you see here is a thin gold plating. The plating helps to produce a smoother
surface for soldering and it protects the copper against oxidation.
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Enclosed /Captive Anchor Points
In our efforts to ensure the very best
heat sinking, we bonded the mounting holes down through to the base.
This effectively insures the very best in heat transfer by directly
involving a metallic mounting screw in the process.
Ever tried mounting a star with two or
three screws? Their "notched" approached to mounting is a pretty
ill conceived solution.
As a bonus we also offer drilling
templates. You can use these template to create the 1mm pilot
mounting holes then follow up with full size holes to match your choices
in mounting screw. Does anyone else in the industry offer drilling
templates to make your job easy?
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Our square product is exactly 12mm by 12mm.
The circle is 22mm in diameter. These are literally the smallest and most efficient designs
available. The squares can be lined up for a straight
line or placed in groups of square for a very high density solutions.
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Easy to solder pads
If you have previously used Luxeon Stars
or other products built on top of aluminum based boards like the Endor
Star, then you are aware of how difficult it is to solder wires to them.
The solder pads on these aluminum based boards are heat-sinked by the
aluminum. Those pads are difficult to warm up under a
soldering iron. In our Rebel designs, we allow the copper
pads to be in a more insulated area and so soldering to them in just
like soldering on a normal circuit board. Soldering is easy,
fast, and neat.
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Inline series wiring native to the
design
Ever tried to wire an star LED in series?
The wires are all over the place.
The star design is poor for wiring LEDs in series.
This problem is compounded when you want to create a dense arrangement
of LEDs. The Rebel Square solves that problem by giving you an easy
path for in-lining LEDs.
Click on this picture for a better
view. Is there any question in your mind how the LEDs are wired?
Could this design be any more intuitive?
This is an example of a common cathode driven circuit. You
can just reverse the wiring pattern for common anode. Or, wire
them all separately as needed.
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LEDs easily mounted with manual
re-flow hand techniques
The board is really easy to work with. You can hand solder
this board with very simple tools. With solder paste, and a simple
hot air soldering station almost anyone can mount the LEDs in their work
shop. This further reduces your costs and allows you to make
repairs on one LED without throwing away an entire board. With
some experimentation you should also be able to apply heat from
a soldering iron on the bottom of the board and effectively melt the
solder paste from below. However, care would need to be
taken that you don't transfer solder on to the bottom of the board as
you want the bottom of the board to sit flat against a heat sink.
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Rebel Boards; simple exercises in common sense designs. |
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