2 HEAT SINKING
The Dynamic Dimming Module requires an external heat sink in order to ensure proper operating temperature of the LEDs.
The DDM has a conductive aluminum case and an efficient thermal path to the LED array. These features promote
efficient thermal management and allow for a simple heat sink design in most applications.
Examples of heat sinking methods are: cast or extruded heat sinks. Both carbon and stainless steel are much less efficient
at transferring heat than aluminum and therefore are not recommended as heat sink materials. The heat sink mounting
surface should be flat and smooth. Metal-to-metal contact surfaces will result in best performance; anodized or unfinished
mounting surfaces are recommended. Mounting the DDM on a painted aluminum surface will reduce the performance
of the heat sink material.
2.1 Compatible Heat Sinks
The following tables list heat sinks models that have compatible form factors and thermal resistance characteristics for use
with the DDM. The thermal resistances assume an approximate ambient temperature of 25C. The heat sinks listed here
are suggestions only.
MechaTronix (round)
Part Number
Dia. (mm)
Height (mm)
Thermal Resistance (°C/W)
LSB9950
99
50
1.3 – 1.5
LSB9980
99
80
1.2 – 1.4
Nano 7080
70
80
1.8
Micro 8630
86
30
1.8
Micro 8650
86
50
1.5
Micro 8680
86
80
1.2
IMPORTANT: These heat sinks are qualified in “free air”. If the DDM is installed in an insulated can fixture (IC Can), the
module may exceed the recommended operating temperature. The heat sink must be evaluated and temperature
tested in the fixture at applicable ambient temperatures for the desired application.
Additional product information at www.led-heatsink.com
Aavid Thermalloy Heat Sink Extrusions (square/rectangular)
Part Number
Width (mm)
Length
Height (mm)
Thermal Resistance (°C/W)
67590
88
88
31
1.5 – 1.7
61085
136
85
33
1.4 – 1.6
Additional product information at www.aavid.com
3 | araya® DDM 0ND and DDM 0TD Installation and Operation Guide
8
5
6
7
2.2 Mechanical Attachment of the Heat Sink
4
8
3
7
2
6
1
5
4
CTM 032
The DDM 0ND and
DDM 0TD light
engines
have a front mount option for heat sink mounting, using
two 4-40 or M2.5 screws.
CTM
019
70.50 B.C.
70.50 B.C.
2.78
[2.78]
D
Mechanical Specifications
2X
3.10
.12
D
3.10
.12
Diameter:
3.19 inches (81 mm)
22
.86
Height:
Dimensions
22 and 31 mm
Weight
0.25 pounds (0.11 kg)
Front mount, M2.5 or 4-40 Screws
24.91°
Max Case Temperature
31 [1.22 ]
CASE TEMPERATURE
DDM 0ND: 1.19 inches (30.26 mm); DDM 0TD: 1.39 inches (35.36 mm)
Light Emitting Surface
Heat Sink Attachment
C
2X
<70°C
C
180°
180°
DDM 0ND
DDM 0TD
B
30.26
1.19
B
21.56
.85
8
7
2X
A
5
6
81
3.19
21.56
.85
4
8
3
7
70.50 B.C.
UNLESS OTHERWISE SPECIFIED:
2.78
D
3.10
.12
2X
A
3.10
.12
1
5
4
DATE
TITLE:
Lumenetix
MFG APPR.
22
.86
THE INFORMATION CONTAINED IN THIS
DRAWING IS THE SOLE PROPERTY OF
LUMENETIX. ANY REPRODUCTION IN
PART OR AS A WHOLE WITHOUT THE
WRITTEN PERMISSION OF LUMENETIX
IS PROHIBITED.
6
7
NAME
DIMENSIONS ARE IN MILLIMETERS DRAWN
TOLERANCES:
CHECKED
ANGULAR: MACH 0.5
ONE PLACE DECIMAL
0.5
ENG APPR.
TWO PLACE DECIMAL
0.15
5
Q.A.
INTERPRET GEOMETRIC
TOLERANCING PER: ASME Y14.5
PROPRIETARY AND CONFIDENTIAL
8
2
6
81
3.19
CTM
032
CTM 019
70.50 B.C.
[2.78]
D
35.36
1.39
CASE
SEE NOTES
MATERIAL
USED ON
NEXT ASSY
APPLICATION
TEMPERATURE
SIZE DWG. NO.
B
FINISH
SCALE: 1:2 WEIGHT:
3
7
2
6
REV
PROPRIETARY AND CONFIDENTIAL
THE INFORMATION CONTAINED IN THIS
DRAWING IS THE SOLE PROPERTY OF
LUMENETIX. ANY REPRODUCTION IN
PART OR AS A WHOLE WITHOUT THE
WRITTEN PERMISSION OF LUMENETIX
IS PROHIBITED.
DO NOT SCALE DRAWING
4
8
31 [1.22 ]
COMMENTS:
NEXT ASSY
SHEET 1 OF
APPLICATIO
1
5
4
24.91°
C
C
180°
180°
Note: Upper dimensions are in inches; lower dimensions are in millimeters.
B
B
30.26
1.19
35.36
1.39
21.56
.85
21.56
.85
Figure 1: Heat Sink Attachment Specifications
81
3.19
81
3.19
UNLESS OTHERWISE SPECIFIED:
A
NAME
DATE
DIMENSIONS ARE IN MILLIMETERS DRAWN
TOLERANCES:
CHECKED
ANGULAR: MACH 0.5
ONE PLACE DECIMAL
0.5
ENG APPR.
TWO PLACE DECIMAL
0.15
A
TITLE:
Lumenetix
MFG APPR.
INTERPRET GEOMETRIC
TOLERANCING PER: ASME Y14.5
PROPRIETARY AND CONFIDENTIAL
THE INFORMATION CONTAINED IN THIS
DRAWING IS THE SOLE PROPERTY OF
LUMENETIX. ANY REPRODUCTION IN
PART OR AS A WHOLE WITHOUT THE
WRITTEN PERMISSION OF LUMENETIX
IS PROHIBITED.
4 | araya® DDM 0ND and DDM 0TD Installation and Operation Guide
8
7
6
5
8
MATERIAL
Q.A.
COMMENTS:
USED ON
NEXT ASSY
APPLICATION
4
FINISH
3
SIZE DWG. NO.
REV
NEXT ASSY
APPLICATION
SHEET
1 OF 1
SCALE: 1:2 WEIGHT:
DO NOT SCALE DRAWING
7
PROPRIETARY AND CONFIDENTIAL
THE INFORMATION CONTAINED IN THIS
DRAWING IS THE SOLE PROPERTY OF
LUMENETIX. ANY REPRODUCTION IN
PART OR AS A WHOLE WITHOUT THE
WRITTEN PERMISSION OF LUMENETIX
IS PROHIBITED.
B
SEE NOTES
6
2
5
1
4