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

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Funtastic
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Can someone please confirm if 7.3A using the CSLPM1.TG 2mm version is safe?

These are lights I’m selling so they need to be reliable

Texas Ace Lumen Tube calibrated with maukka lights

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Yokiamy
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Funtastic wrote:
Can someone please confirm if 7.3A using the CSLPM1.TG 2mm version is safe?

These are lights I’m selling so they need to be reliable

7,3A for the 2mm is perfect,

Quote from the first post:

I also had opportunity to play with this larger 2mm white flat maybe even sooner than Led4Power. So this is mine pre- test with classic light meter and clamp meter (so test is just for reference before someone with better equipment test it). Full Samsung INR 30 Q. Single cell 18650 light with FET Djozz driver.

4.2V, 13.4A, 930 FC

4.0V, 12.5A, 950 FC

3.9V, 11.4A,1050 FC

3.8V, 10A, 1250 FC

3.7V, 9.20A, 1200 FC

3.6V, 8.20A, 1150 FC

3.4V, 7A , 1100 FC

Somewhere at 8-9A will be just enough…

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I once used ≈8.1+A (measured effective) for the CSLPM1.TG (2mm²) in a Sofirn C8S, and it worked fine. Driver used: ∅17/22mm weird ramping SST-40 driver with additional R050 on top of the stock R005. 

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Yokiamy wrote:
Funtastic wrote:
Can someone please confirm if 7.3A using the CSLPM1.TG 2mm version is safe?

These are lights I’m selling so they need to be reliable

7,3A for the 2mm is perfect,

Quote from the first post:

I also had opportunity to play with this larger 2mm white flat maybe even sooner than Led4Power. So this is mine pre- test with classic light meter and clamp meter (so test is just for reference before someone with better equipment test it). Full Samsung INR 30 Q. Single cell 18650 light with FET Djozz driver.

4.2V, 13.4A, 930 FC

4.0V, 12.5A, 950 FC

3.9V, 11.4A,1050 FC

3.8V, 10A, 1250 FC

3.7V, 9.20A, 1200 FC

3.6V, 8.20A, 1150 FC

3.4V, 7A , 1100 FC

Somewhere at 8-9A will be just enough…


A max at 10A is not what I found in my test (graph also in the first post), but rather at 7.5A. So you are driving the led at its maximum output, provided that the heat path in your build is good, or else you are already over the top. My advice, for flashlights to be sold, is to aim for 6A instead, you are at over 90% of max there and the led is stressed a bit less.
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Thanks for the measurements Barkuti! Didn’t know there was a full 2+ mm difference between the two.. I think I still prefer the M2 for it’s thin bezels and size/throw efficiency.

I would love to see an 18650 version of the GT Micro.. same bezel diameter as the M1 with 10% more reflector area.

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EasyB wrote:

Also the numbers you’re using for the diameters for the M2/M1 reflector are the outer diameters I think, not the diameter of the reflecting area. See here for measurements.
http://budgetlightforum.com/node/43433

Actual measurements are in link above. Also emitter hole is 7mm but the non reflecting area for the purpose of this calculation has more like 10mm diameter. So with those numbers M1 has 494mm^2 and M2 has 461mm^2.

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djozz wrote:
Yokiamy wrote:
Funtastic wrote:
Can someone please confirm if 7.3A using the CSLPM1.TG 2mm version is safe?

These are lights I’m selling so they need to be reliable

7,3A for the 2mm is perfect,

Quote from the first post:

I also had opportunity to play with this larger 2mm white flat maybe even sooner than Led4Power. So this is mine pre- test with classic light meter and clamp meter (so test is just for reference before someone with better equipment test it). Full Samsung INR 30 Q. Single cell 18650 light with FET Djozz driver.

4.2V, 13.4A, 930 FC

4.0V, 12.5A, 950 FC

3.9V, 11.4A,1050 FC

3.8V, 10A, 1250 FC

3.7V, 9.20A, 1200 FC

3.6V, 8.20A, 1150 FC

3.4V, 7A , 1100 FC

Somewhere at 8-9A will be just enough…


A max at 10A is not what I found in my test (graph also in the first post), but rather at 7.5A. So you are driving the led at its maximum output, provided that the heat path in your build is good, or else you are already over the top. My advice, for flashlights to be sold, is to aim for 6A instead, you are at over 90% of max there and the led is stressed a bit less.

Tried it at 6.3A using a Telsa 4800mAh 21700 and get more lumens than at 7.3A. Maybe I got a lower bin and 7.3A was over driving it.

7.3A – Samsung 40T

Turn On – 1200
30 Sec – 1170

6.3A – Tesla

Turn On – 1260
30 Sec – 1200

7.5 min before it’s too hot to hold

I purchased mine from Kaidomain

Texas Ace Lumen Tube calibrated with maukka lights

New Zealand store – https://www.piercingthedarkness.co.nz (NZ customers only)

YouTube channel – https://www.youtube.com/channel/UCIUWi2vYp4CWrRkOJM70t_w/videos (Demos for my customers, and reviews)

Funtastic
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Is it normal for these to tint shift?

I get a slight purple even at 4.5A

Texas Ace Lumen Tube calibrated with maukka lights

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YouTube channel – https://www.youtube.com/channel/UCIUWi2vYp4CWrRkOJM70t_w/videos (Demos for my customers, and reviews)

Yokiamy
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i did not notice any tint shift in one of my self built lights, tint shift usually indicates a too high current

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Yokiamy wrote:
i did not notice any tint shift in one of my self built lights, tint shift usually indicates a too high current

But surely not at 4.5A

At a white wall up until 4.5A it’s a nice neutral white. If mine is exactly the same led then it must be normal. I got 6pcs on dtp mcpcb. Used Arctic MX-4 thermal paste so it’s not heat.

Removed the glass so it’s not the AR

Texas Ace Lumen Tube calibrated with maukka lights

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Funtastic
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It’s possible it’s completely normal and it’s just the higher lumens making it appear like that and it’s actually meant to be that tint.

Tried another 2mm at 4.5A with the same result and also the 1mm at 4A looks the same.

Texas Ace Lumen Tube calibrated with maukka lights

New Zealand store – https://www.piercingthedarkness.co.nz (NZ customers only)

YouTube channel – https://www.youtube.com/channel/UCIUWi2vYp4CWrRkOJM70t_w/videos (Demos for my customers, and reviews)

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It would probably be a good idea to send djozz a 2mm² CSLPM1.TG on copper star from Kaidomain, so we could better know the difference versus that earlier test (djozz got better results on a second test of the 1mm² white flat). Many people is getting white flats from Kaidomain, it would be of service. Or maybe send one to Texas_Ace for the same reason.

In particular I have a CSLPM1.TG waiting to be mounted on a K6 host (still heading home in the slow boat). Gonna drive it at a little bit above 7A maximum with a ∅22mm weird ramping SST-40 driver. The good thing is that with such driver I can ramp it down a little and measure the ceilingbounce lux to see how it compares. Considering the kind of beefy host, it should work right. 

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Barkuti wrote:

It would probably be a good idea to send djozz a 2mm² CSLPM1.TG on copper star from Kaidomain, so we could better know the difference versus that earlier test (djozz got better results on a second test of the 1mm² white flat). Many people is getting white flats from Kaidomain, it would be of service. Or maybe send one to Texas_Ace for the same reason.


In particular I have a CSLPM1.TG waiting to be mounted on a K6 host (still heading home in the slow boat). Gonna drive it at a little bit above 7A maximum with a ∅22mm weird ramping SST-40 driver. The good thing is that with such driver I can ramp it down a little and measure the ceilingbounce lux to see how it compares. Considering the kind of beefy host, it should work right. 

Yeah, that’s a good idea. I think that’s wise before I try sell them

I’m using the same ramping driver from Convoy and at stock with a 40T I was getting 7.5A briefly and settling around 6.9A

Texas Ace Lumen Tube calibrated with maukka lights

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By the way, in my hard driven (up to ≈4.75) M1 I never noticed tint shift in its 1mm² CSLNM1.TG (from led4power's early batches). 

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Funtastic
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Where is LED4Power based?

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Funtastic wrote:
Where is LED4Power based?

Europe, Croatia
Funtastic
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I’m guessing postage would be costly?

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If it already gets blue at 4.5A, it could be thermal problems too, like a reflow gone bad. I can imagine KD selling lower bins than i.e. led4power, but that should not result in a different current handling, just a bit lower output.

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djozz wrote:
If it already gets blue at 4.5A, it could be thermal problems too, like a reflow gone bad. I can imagine KD selling lower bins than i.e. led4power, but that should not result in a different current handling, just a bit lower output.

I have 2pcs installed in two different lights that behave the same way. Convoy L21A & M21C

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Postage from led4power was affordable sometime ago, just not now. Adding a 2mm² CSLPM1.TG on ∅20mm star makes me see an €12.50 (Premium Packet EU2) shipping fee, when in the past their lowest regular mail shipping fee was €2. On top of this add an extra €0.80 if your order is under €9. Thus, if I want to order a single 2mm² white flat on ∅20mm star I have to pay a whopping €20.90 to see it reach my mailbox. Facepalm

Fri, 05/01/2020 - 10:57

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It can’t be a thermal issue when it’s the second I switch it on. It would be over a longer time?

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Thanks Barkuti.

I was thinking of testing one to compare. Sounds pretty high, might leave it

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Actually, would I be getting a near accurate current reading using 12 awg wire, 20cm on my DMM? Someone else reported 7.5A using 2mm using my same driver and I measured 7.5A for a sec also. I’m guessing 12 awg is fine for this current.

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No, because DMM adds resistance on its own.

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Agro wrote:
No, because DMM adds resistance on its own.

Okay, time to order a clamp meter.

Any ideas on a decent model?

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Funtastic wrote:
Agro wrote:
No, because DMM adds resistance on its own.

Okay, time to order a clamp meter.

Any ideas on a decent model?


UT210E
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Barkuti wrote:

Postage from led4power was affordable sometime ago, just not now. Adding a 2mm² CSLPM1.TG on ∅20mm star makes me see an €12.50 (Premium Packet EU2) shipping fee, when in the past their lowest regular mail shipping fee was €2. On top of this add an extra €0.80 if your order is under €9. Thus, if I want to order a single 2mm² white flat on ∅20mm star I have to pay a whopping €20.90 to see it reach my mailbox. Facepalm

Fri, 05/01/2020 - 10:57

 

Because of corona virus pandemic certain types of shipping are/were not available for some countries, Spain was one of them. Now situation is getting better, so cheaper shipping options are available again (standard shipping options are now available again for Spain), for some countries outside of EU restrictions still apply. The problem is my post office doesn't have list of countries with such restrictions, it's only visible to them in their system, I tried to get that list in "paper" format, but for now they so have it (or don't care).

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Thanks for clarifying led4power, good to know. 

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Here's what my latest L4P order has gone through. Weird it went from NYC to VA, where I'm only about 30 miles from NYC:

ROANOKE VA DISTRIBUTION CENTER, Arrived at USPS Regional Facility -> Your item arrived at our USPS facility in ROANOKE VA DISTRIBUTION CENTER on April 30, 2020 at 8:23 am. The item is currently in transit to the destination.

ISC NEW YORK NY(USPS), Processed Through Facility
Origin Post is Preparing Shipment
UNITED STATES, USJFKA ISC NEW YORK NY (USPS), Receive item at office of exchange
CROATIA, HRZAGB ZAGREB 10003, Insert item into bag
CROATIA, HRZAGB ZAGREB 10003, Receive item at office of exchange
CROATIA, 10004 ZAGREB, Receive item at location
CROATIA, 10200 ZAGREB, Receive item at location
CROATIA, 44105 SISAK, Receive item from customer

The delay in the office of exchange for 11 days is notable. Plus 5 days in US it took to ship it to the wrong place, apparently.

Shipping was 8.50 euro for a 33 euro order of LED's, MCPCB's, driver, etc. Hoping that shipping comes down in the future because it used to be real cheap - L4P had great low shipping costs, but I haven't placed an order in quite a while before this one, like 2 years.

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By the way, this is just to comment that if there is one led emitter which could benefit from a 4040 footprint, that is the 2mm² white flat or CULPM1.TG. Its about power density. 

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