Heat Sinks & Assemblies                 

D6 Thermal Products

Bonded Fin Heat Sinks

Liquid Cooled Cold Plates 

Custom Heat Sink Designs

Heat Sink Solutions

D6 can provide you with high performance heat sinks to meet your needs.
Custom and industry standard heat sinks are available with fabrication and
plating to meet your design requirements.

D6 can provide you with a fully integrated assembly to your drawing and fully tested to the extent possible at its level. With materials supplied by the customer, D6, or a combination of both, you will receive a finished subassembly. D6's value added services include thermal compound screening, silicon pad application, fan attachment, and other heat sink sub assembly preparations. D6 specializes in high performance heat sinks that include "Air Cooled" utilizing Bonded Fin technologies and "Liquid Cooled" utilizing copper and aluminum cold plates.

  Bonded Fin Technology

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bonded fin heat sink assemblies D6 offers a full line of Bonded Fin heat sink assemblies with mounting brackets, schrouds and fans as well as the complete assembly with the components installed. The heat sink shown at the left is Bonded Fin with a device mounting surface of 10.78 inches wide by 17 inches long. This unit is cooled with two fans and has a thermal resistance less than 0.022 degrees centigrade per watt. See table below for other sizes.

BONDED FIN ASSEMBLIES for SINGLE, DUAL AND TRIPLE 120mm Fans

D6 part #
Click Below to
view spec Sheet

Width

Length

Height

 Thermal Resistance C/W Comments
Dual Wide Fan assemblies Inches Inches Inches Centigrade
/Watt		 Picture
Above

D6-1078-0600-50-45-xxxx *

 10.78 6.00 5.0 0.044 Note:1
D6-1078-0700-50-45-xxxx 10.78 7.00 5.0 0.039 Note:1
D6-1078-0800-50-45-xxxx 10.78 8.00 5.0 0.037 Note:1
D6-1078-0900-50-45-xxxx 10.78 9.00 5.0 0.033 Note:1
D6-1078-1000-50-45-xxxx 10.78 10.00 5.0 0.031 Note:1
D6-1078-1100-50-45-xxxx 10.78 11.00 5.0 0.029 Note:1
D6-1078-1200-50-45-xxxx 10.78 12.00 5.0 0.027 Note:1
D6-1078-1300-50-45-xxxx 10.78 13.00 5.0 0.026 Note:1
D6-1078-1400-50-45-xxxx 10.78 14.00 5.0 0.025 Note:1
D6-1078-1500-50-45-xxxx 10.78 15.00 5.0 0.024 Note:1
D6-1078-1600-50-45-xxxx 10.78 16.00 5.0 0.023 Note:1
D6-1078-1700-50-45-xxxx 10.78 17.00 5.0 0.022 Note:1 Pictured above
D6-1078-1800-50-45-xxxx 10.78 18.00 5.0 0.021 Note:1
Single Wide Fan Assemblies          
D6-478-400-50-16-xxxx 4.78 4.00 5.0 0.150 Note:2
D6-478-500-50-16-xxxx 4.78 5.00 5.0 0.129 Note:2
D6-478-600-50-16-xxxx 4.78 6.00 5.0 0.114 Note:2
D6-478-700-50-16-xxxx 4.78 7.00 5.0 0.103 Note:2
D6-478-800-50-16-xxxx 4.78 8.00 5.0 0.095 Note:2
D6-478-900-50-16-xxxx 4.78 9.00 5.0 0.087 Note:2
D6-478-1000-50-16-xxxx 4.78 10.00 5.0 0.081 Note:2
D6-478-1100-50-16-xxxx 4.78 11.00 5.0 0.076 Note:2
D6-478-1200-50-16-xxxx 4.78 12.00 5.0 0.072 Note:2
D6-478-1300-50-16-xxxx 4.78 13.00 5.0 0.068 Note:2
D6-478-1400-50-16-xxxx 4.78 14.00 5.0 0.065 Note:2
D6-478-1500-50-16-xxxx 4.78 1500 5.0 0.062 Note:2
D6-478-1600-50-16-xxxx 4.78 16.00 5.0 0.060 Note:2
Triple Wide Fan Assemblies          
D6-1659-1400-50-105-xxxx 16.59 14.00 5.0 0.010 Note:3

All thermal resistance shown above are based upon an air flow of 600 lfm
with an Isothermal load at 1 Atmosphere. Data shown is for unfinished
aluminum base plate and fins.

Notes

  1. Accommodates two 120mm fans side by side. Brackets and schrouds
    are available.
  2. Accommodates one 120mm fan. Brackets and schrouds are available.
  3. Shown with three 172x150 mm fans side by side with mounting brackets
    and schrouds available.

D6 offers a line of high aspect ratio bonded fin heat sinks and assemblies.
Bonded Fin heat sinks offer as much as 30% greater cooling effect then their extruded counterparts for the same cubic space required. D6 offers a line
of both Standard and Custom bonded fin heat sinks. We can provide a full thermal profile and recommended heat sink size to meet your specifications. Presently we offer this line in sizes of 2" to15" base plate widths cut to any
required length meeting your space and thermal requirements.

 heat sink base plates

Assemblies shown above utilize 120mm and 80mm fans.  Bonded Fin Heat Sinks are available for Full Brick size DC/DC power supplies with and without fans attached.

The bonded fin heat sinks shown above are designed with two base plates for mounting semiconductor devices. The two plates are spaced to accommodate
the square dimensions of the fan. The larger assembly has an additional top
plate for lower power devices. A very efficient and compact assembly.

  Hydroblok High Performance Liquid Cooled Cold Plates

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Hydroblok_A12P2 2 Pass Cold Plates      
2-pass.jpg (20025 bytes)

View PDF of Specifications.

 D6 offers this series of 2.25 by 2.25 2 pass cold plates to meet the demanding needs of the power dissipation presented by IGBTs and Power Diodes. This plate provides  a "U" pattern of 2 passes.  A substantial area  is cooled by 2 tubes and copper inserts, therefore providing for a low thermal resistance between the device or devices and the liquid coolant.

Hydroblok_A1_1000

 Hyrdoblok - 1000
Power Resistor cold plate up to 1,000 watts
tap-1000.jpg (20898 bytes)

View PDF of Specifications

 D6 1,000 watt resistor cold plates are designed to accommodate power resistors up to 1,000 watts.   The cold plates come blank or drilled & tapped to accommodate the resistors.
Hydroblok_A14P 4 Pass Cold Plates      
4-pass.jpg (18202 bytes)

View table of 4 pass Hydrobloks

 D6 offers this series of 5 inch wide 4 pass cold plates to meet the demanding needs of the power dissipation presented by IGBTs and Power Diodes. The 5” wide plate allows for 1 or multiple rows of devices with the tubing prepared in a serpentine pattern of 4 passes.  A substantial area of each device is cooled by 4 tubes and copper inserts, therefore providing a  low thermal resistance between the device or devices and the liquid coolant.
Hydroblok_A16P 6 Pass Cold Plates
6-pass.jpg (16896 bytes)

View table of 6 pass Hydrobloks

 D6 offers this series of 10 inch wide 6 pass cold plates to meet the demanding needs of the power dissipation presented by IGBTs and Power Diodes. The 10” wide plate allows for 2 rows of devices with the tubing prepared in a serpentine pattern of 3 passes and then continuing in a second 3 pass pattern. A substantial area of each device is cooled by 3 tubes and copper inserts, therefore providing low thermal resistance between the device and the liquid coolant.

4&6 Pass Models for High Performance Liquid Cooled Cold Plates

Click
Below to
view spec
Sheet

Width

Length

Plate
Thickness

Tube O.D.

 Tube In/Out Length

Plate Material

Plate
Insert

Plate
Finish

Plate
Rth*
4 Pass
Hydro-Blok-Al Series 4P-06 5.0” 6.0” 0.60” 0.375” 2” MIN Alum Copper None 0.0134
Hydro-Blok-Al Series 4P-12 5.0” 12.0” 0.60” 0.375” 2” MIN Alum Copper None 0.0066
Hydro-Blok-Al Series 4P-16 5.0” 16.0” 0.60” 0.375” 2” MIN Alum Copper None 0.005
Hydro-Blok-Al Series 4P-20 5.0” 20.0” 0.60” 0.375” 2” MIN Alum Copper None 0.004
6 Pass
Hydro-Blok-Al Series 6P-06 10.0” 6.0” 0.75” 0.500” 2” MIN Alum Copper None 0.0067
Hydro-Blok-Al Series 6P-12 10.0” 12.0” 0.75” 0.500” 2” MIN Alum Copper None 0.0033
Hydro-Blok-Al Series 6P-16 10.0” 16.0” 0.75” 0.500” 2” MIN Alum Copper None 0.0025
Hydro-Blok-Al Series 6P-20 10.0” 20.0” 0.75” 0.500” 2” MIN Alum Copper None 0.002

Copper Cold Plates "HYDROBLOKS"

D6 offers a line of precision designed and manufactured "HYDROBLOKS". This line of cold plates is designed for high performance cooling of IGBTs and DIODES. The line is available in a large variety of sizes ranging from single IGBT packages to multiple IGBT and DIODE packages. The line is approximately 1/2" thick with the mounting area slightly larger than the product mounted on it. This line is solid copper silver brazed with a silver plate finish. There are two inputs and two outputs available to allow for easy series or parallel flow.  The HYDROBLOK shown has an isothermo resistance of 0.0045c/w measured from liquid to the block surface. The surface is flat to <1.5 mil across the mounting face.

hydroblocks cold plates

D6 can provide your liquid cooling needs with both Standard and Custom designs.

HYDROBLOKS

High Performance Liquid Cooled Cold Plates

D6 Part #
Click Below to
view spec Sheet

Width

Length

Height

Thermal Resistance

Comments
Copper Plates With Single or Dual in/out Inches Inches Inches Centigrade
/Watt		 Picture Above

Cu-450-400-050-S-x

 4.50 4.00 0.50 0.0056 Note:H1
Cu-450-550-050-S-x 4.50 5.50 0.50 0.0045 Note:H2 Picture above
Cu-450-7125-050-S-x 4.50 7.25 0.50 0.0033 Note:H3
Cu-450-875-050-S-x 4.50 8.75 0.50 0.0026 Note:H4
Cu-400-956-050-S-x 4.00 9.56 0.50 0.0028 Note:H5
Note:H1 (Accommodates one IGBT with mtg. Dimensions of 2.44" x 3.66")
Note:H2 (Accommodates one IGBT with mtg. Dim. of 2.44" x 3.66" and one Diode with mtg.
dim. of 3.15")
Note:H3 (Accommodates one IGBT with mtg. Dim. of 2.44" x 3.66" and two Diodes with mtg.
dim. of 3.15")
Note:H4 (Accommodates one IGBT with mtg. Dim. of 2.44" x 3.66" and three Diodes with mtg.
dim. of 3.15")
Note:H5 (Accommodates Three Diodes with mtg. dim. of 3.15" x 1.5")

Consult D6 for custom engineered liquid cold plates and blocks.

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