DIY Passive cooling with PIN Heatsinks SST120 and SST140

[sixstring2112]

Alice

 

[ThaiBaby1]

samsung 561 strips were around $24 when i got them. Also the lm/w was not as impressive. Price and efficiency wise cobs seem more attractive.
The new samsung strip is more efficient and $20, the one one is now $14 here

I used 2.079" from heatsink USA. 6.080" 4.850" seem good too. With strips dont have to worry about base plate thickness.

I am trying to use these 9W strips for under canopy lighting.
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Hey Robin
Could a 48 volt meanwell 600h drive the Samsung L09 66 watt strips? The current is 1380 milliamps. How many could it run?

 

[robincnn]

Hey Robin
Could a 48 volt meanwell 600h drive the Samsung L09 66 watt strips? The current is 1380 milliamps. How many could it run?

That looks like a nice powerful strip.
Datasheet says min 43.7V, Typ 48.2V, 52.1V
They should be around 48.2V

You have to decide between A type or B type
B will be near 48V so it could slightly underdrive strip unless your driver gives a little more voltage. But you can use potentiometer with B

48A . You use built in potentiometer on driver. A type alao allows you to adjust voltage to say 48.2V that way you have more control. If a few strips get disconnected the current will not increase in other strips as the voltage is limited to 48.2. similarly you can set it to 47.x to slightly underdrive and then again if some strips disconnect, remaining strips will not burn down due to voltage cap.

12.5/1.38 = 9 strips or more with type B
With type A driver you limit voltage so you can connect a single strip or more

 

[caretak3r]

Hey Robin
Could a 48 volt meanwell 600h drive the Samsung L09 66 watt strips? The current is 1380 milliamps. How many could it run?

Good find, for some reason I missed the influx series. They are available for order at Verical as well. What I like about them is that they have shorter length available as well (280mm ~ 11")

 

[robincnn]

@The Dawg

Left 60 is too narrow. Right 90 works great.


Left: Aluminum Holder, Right: Plastic holder


Routing wire

 

[robincnn]

 

[Airwalker16]

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Damn that shit looks so cool! It's like a little light beam inside the lens!

 

[IFARTED]

Is that a mounting hole on the side?

 

[robincnn]

Is that a mounting hole on the side?

The new SST 140 is pre drilled for Khatod Sio3 Optics
The M4 on top can be used for mounting. But if you use Khatod Sio3 Optics then all 4 get used by holder. Then you can mount frame on holder or you can use the side M4 positions on 2 opposite ends.
Khatod Sio3 Optics works for Bridgelux Vero 29.
For 3590 I have ordered some low profile holders that should be available end of this month.

 

[BOBBY_G]

maybe old news but i came across this handy pinfin dissipation calculator

http://www.myheatsinks.com/calculate/round-pin-heat-sink-calculator/

 

[welight]

The new SST 140 is pre drilled for Khatod Sio3 Optics
The M4 on top can be used for mounting. But if you use Khatod Sio3 Optics then all 4 get used by holder. Then you can mount frame on holder or you can use the side M4 positions on 2 opposite ends.
Khatod Sio3 Optics works for Bridgelux Vero 29.
For 3590 I have ordered some low profile holders that should be available end of this month.
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Hi Robin
Looking at the Khatod spec these are for LES of 23mm does the 3590 work under this?
Cheers
Mark

 

[Airwalker16]

Hi Robin
Looking at the Khatod spec these are for LES of 23mm does the 3590 work under this?
Cheers
Mark

Certainly not with ideal Chip Lok holders, I'm sure.

 

[welight]

Certainly not with ideal Chip Lok holders, I'm sure.

even with a flat holder I am not sure this optic will pick up the large LES on the 3590
Cheers
Mark

 

[The Dawg]

@welight Check It Out. The Problem Lies In The Holder Not The Size Of The Les

 

[Airwalker16]

The 3590 just barely fits huh. You'd have to solder wires straight to it and use thermal Glue/Epoxy. But the lens itself almost would hold it down so I wonder if just grease would even work?

 

[Airwalker16]

Looks to me like the LES fits almost PERFECTLY under the lens part.

 

[The Dawg]

The 3590 just barely fits huh. You'd have to solder wires straight to it and use thermal Glue/Epoxy. But the lens itself almost would hold it down so I wonder if just grease would even work?

Well You Can If You Want. Robins Currently Working On A Solution So We Can Use These Lens With The Cxb Along With The Citizen Cobs

 

[The Dawg]

Looks to me like the LES fits almost PERFECTLY under the lens part.

It Does

 

[welight]

Im not saying it does not physically fit, Im saying the optical pickup is for a smaller LES, making the performance a possible issue, I sell Khatod so not having a go at anyone, I would like to see it work as I would like to add to our range, just concerned the outer part of the LES is not being collected under the lens properly, anyone done any par numbers with 3590?
Cheers
Mark

 

[Airwalker16]

Im not saying it does not physically fit, Im saying the optical pickup is for a smaller LES, making the performance a possible issue, I sell Khatod so not having a go at anyone, I would like to see it work as I would like to add to our range, just concerned the outer part of the LES is not being collected under the lens properly, anyone done any par numbers with 3590?
Cheers
Mark

I think it looks like the whole of the LES all fits under the concave part of the lens.