Hi:
I am experimenting with using power LEDs for scientific light source applications. Presently I have deployed an LedEngin 5W green emitter with MCPCB in a lab with a MOSFET driver and variable power supply. At low supply voltage, it can be operated CW, and at high supply voltage, it can be pulsed up to 7.5 amps. I have plans to experiment with pulsed mode up to hopefully 15-30 A, or wherever the LEDs just can't take it anymore.
I am talking about very short pulses here, 0.1-1.0 microseconds typically, with 1-10% duty cycle, so that average power is significantly less than the CW rated power.
LedEngin however have been less than helpful with regard to obtaining the highest flux bins. I presently have the lowest flux bins of the green LEDs, which I bought from Mouser.
I bought LedEngin parts because having a pre-mounted emitter on an MCPCB is a big plus.
Now I need a single die blue emitter for a similar application, and I'm wondering if there are any other vendors which make pre-mounted Cree emitters in blue with high flux bins?
Even if I had to buy bare emitters and mount them myself I could probably deal with that, as I think we have a reflow oven around here. But I at least need an off-the-shelf MCPCB to mount the emitter.
Thanks for comments.
I am experimenting with using power LEDs for scientific light source applications. Presently I have deployed an LedEngin 5W green emitter with MCPCB in a lab with a MOSFET driver and variable power supply. At low supply voltage, it can be operated CW, and at high supply voltage, it can be pulsed up to 7.5 amps. I have plans to experiment with pulsed mode up to hopefully 15-30 A, or wherever the LEDs just can't take it anymore.
I am talking about very short pulses here, 0.1-1.0 microseconds typically, with 1-10% duty cycle, so that average power is significantly less than the CW rated power.
LedEngin however have been less than helpful with regard to obtaining the highest flux bins. I presently have the lowest flux bins of the green LEDs, which I bought from Mouser.
I bought LedEngin parts because having a pre-mounted emitter on an MCPCB is a big plus.
Now I need a single die blue emitter for a similar application, and I'm wondering if there are any other vendors which make pre-mounted Cree emitters in blue with high flux bins?
Even if I had to buy bare emitters and mount them myself I could probably deal with that, as I think we have a reflow oven around here. But I at least need an off-the-shelf MCPCB to mount the emitter.
Thanks for comments.
