OSRAM CSLNM1.TG & CULNM1.TG 1mm², CSLPM1.TG & CULPM1.TG 2mm²

Thanks :slight_smile: I’ll stop derailing this thread now.

I modded my Emisar D4 with 2 1mm^2 and 2 2mm^2 white flats.

These emitters’ voltages make them perfect to put in parallel with each other. Emitters in parallel always have the same forward voltage, so one can predict the relative currents in each emitter by looking at their voltage vs current plots. From djozz’s measurements: if, say, 6A goes through the 2mm^2 LED then 3A will flow through the 1mm^2 one.

It took me a couple tries to get all 4 emitters centered with no shorts. It pulls 19.5A with a VTC5A measured using a clamp meter. I measured 46kcd.

- X3 -

I have a spare Jaxman Z1 (Cometa) I really want to put a flat white in with a Led4Power driver. How did you get the driver to fit?

The Cometa takes a standard 17mm driver, so the L4P LD-4A fits without modification :slight_smile:
The sweet spot for the 1mm² WF is 4,5A while the 2mm² version should be around 7A.
I’ve swapped a 2mm² in mine 2 days ago and adjusted the current to 6A and get a nice 220kCd and a funny wide screen beam.

X3

Dang man! I never got a Cometa because I already had 3 Jaxman Z1’s, but they take a 22mm driver. I need to find a 22mm driver set at 4.5A with a bleeder for an illumination tail cap. Maybe Led4Power will come out with a larger diameter driver…

From what I see in the published data by luminarium iaculator, CSLPM1.TG maxes at ≈10A. Considering the CSLNM1.TG maxed at ≈5.75A in led4power's tests, for the same relationship the 2mm² could be set at 10A × (4.5 / 5.75) = ≈7.826A.

does anyone know at 2A, how many lumens does the OSRAM CSLNM1.TG LED make?

540 lm:

Thanks

Have you tried taking a look at literally the first post in this topic?

BLF X5 (White Flat 1mm2 from LED4Power)

Hot spot:

CCT = 8823K (Duv –0.0110)
Color Rendering Index (Ra) = 69.6 [ R9 = 2.6 ]

Spill just outside hot spot:

CCT = 6701K (Duv –0.0048)
Color Rendering Index (Ra) = 67.5 [ R9 = –19.0 ]

Almost 9000k…

Wow that is pretty bluish, doesn't it? Sort of like 9300K temp adjusted monitors.

:-)

I have put the 1mm2 on the TX25C2 MTN Electronics 22mm FET driver, and the hotspot is the same size as the Thrunite TN31 but not as bright, it throws a lot. I don’t go over 75% power, when I do it turns pinkish to let me know that it is not liking the current.

The other 1mm2 was put on a Manker U11, made it more throwy, the last one will be put on the Manker T02

I re-measured the hotspot further back just to see, didn’t make much difference. On turbo it’s more purple than blue, probably since it’s below BBL

Note this is turbo and between 4-5 amps IIRC:

CCT = 8932K (Duv –0.0116)
Color Rendering Index (Ra) = 68.8 [ R9 = 3.6 ]

Hotspot on a much lower setting:

CCT = 6873K (Duv –0.0030)
Color Rendering Index (Ra) = 66.2 [ R9 = –25.2 ]

Which driver did you use? Purple tint suggests current is higher than 4-5A.

So white flats' CCT steers to higher numbers when overdriven? I see R9 gets better but let's say I'd prefer to minimize tint shift. What would be the maximum reasonable driving current for the CSLPM1.TG (2mm²), 8A maybe? Host will be a C8S.

It’s an x5 (fet) using vapcell 14500. Don’t think it’s above 5A. It’s not very noticeably purple just trying to convey to barkuti even though cct is high it isn’t angry blue like a $3 zoomie.

I measured a zoomie that has like 12-14 7135 and the tint is similar on max. It’s not overdriven by BLF standards

My first Flat White (1mm²) build. D1S with custom 5A linear driver. Linky

I’ve been looking through this entire thread, is this the only direct comparison between the 1mm^2 CSLNM1.TG (or Flat Black which is comparable size wise) & the 2mm^2 CSLPM1.TG? So both will produce a pure circle hotspot, the PM1 will just have a slightly bigger hotspot. Will the PM1 spill also be circular?

Then another question, how will a triple reflector like the BTU’s deal with the PM1’s rectangular shape? Is there an optimal orientation to place the LED’s?

Thanks