lightSeeker
420 Member
Hi everyone,
I am going to build an LED fixture consisting of 5w chips.
These 5w chips contain 2x2 45mil diodes.
Each one of these diodes, if packaged individually, are sold as 3w chips because they are rated at 700mA (3.4v X 700 = 2.4w).
In a 5w (2x2) package, they are also rated at 700mA, each chip receiving 350mA and ~7v X 700 = 4.9 watts in total.
I would love to ask those who have experience with these chips :
.. considering I will be well cooling them
I am going to build an LED fixture consisting of 5w chips.
These 5w chips contain 2x2 45mil diodes.
Each one of these diodes, if packaged individually, are sold as 3w chips because they are rated at 700mA (3.4v X 700 = 2.4w).
In a 5w (2x2) package, they are also rated at 700mA, each chip receiving 350mA and ~7v X 700 = 4.9 watts in total.
I would love to ask those who have experience with these chips :
.. considering I will be well cooling them
- Are they rated at their peak efficiency?
- Can I drive them safely at their rated current of 700mA and obtain 4.9 watts?
- Or would it be better (and drastically increase light output per watt consumed) if I reduced the current to half?