I forgot about SFT-40.It can be reflowed on original MCPCB. Not the best BIN tint, but no the worst either. Actually it’s the only available I think :D.
So to confirm again, the original driver for XHP50.2 in the FW1A Pro works if i swap in a SFT40 or CULPM1 mcpcb? Or do I need to swap the correct driver as well?
I have done it.
FW1A Pro with CULPM1.
Now waiting for the smooth reflector to arrive.
The original mcpcb is 3mm thick.
So i double stack a bare mcpcb below the CULPM1 mcpcb, both 1.5mm.
Btw, the original body is from the stainless steel FW3A/FW3S.
P/S…I had to file the edges of the 20mm CULPM1 mcpcb as the original diameter of the mcpcb is 19mm
Yes, definitely better throw than original XHP50.
I have no idea why they designed it like that.
I put a whole lot of thermal paste to fill up the gaps.
Just to check, does the bottom of the original MCPCB have channels to accommodate the wires? I’m struggling to believe it just sits on top of the wires.
A key factor is the surface intensity of the LED, the more intensity the more throw there is.
If you have 2 LEDs with the same total brightness (total lumens output) and one has half the emitting surface area of the other it will have more intensity, more brightness/lumens per area, and will have more throw as a result.
If you have a bright LED with a large surface area and a less bright LED with a smaller surface area that happen to have the same intensity they will throw the same but the larger LED will give a larger hotspot.
The driver comes into play by providing enough power to the LED for it to run correctly, brighter an LED the more throw there is. Sometimes an LED is underdriven so doesn’t reach it’s full potential but an LED can also be overdriven and can lose brightness as a result.
I’m confused by this, from what i’ve seen the FW1A PRO is sold with a single emitter, the XHP50.2 pictured above, and stainless steel will provide some heat transfer through the body to the outside air, not as much as aluminium or copper but certainly more if the MCPCB touches than the shelf than if it doesn’t.
EDIT - It’s entirely possible my confusion is down to me not realising that body means head as well, and not just body as i assumed: