 |
 |
| |||||
 |
 |
 |
 |
 | |||
 | |||||||
 |
 |
 |
 |
| |||
|
|
||||||
|  ACT's HiK Aluminum Plate is an aluminum heat spreader having embedded heat pipes for enhanced heat spreading and transport. The effective thermal conductivity varies with the layout of the embedded heat pipes but is at least several factors higher than the traditional aluminum and copper heat spreaders. Below is a photo of ACT's HiK Aluminum Plates for a military RF cooling application.
 HiK Aluminum Plates for military RF cooling The HiK Aluminum Plate is particularly useful for cooling of multiple high power components. A typical application involves multiple high power electronic devices mounted on the HiK Aluminum Plate. The HiK Aluminum Plate collects and moves the heat from these discrete heat sources to the edge mount liquid or air heat sinks with minimal temperature gradients (i.e. thermal resistances). Traditional aluminum and copper plates have thermal conductivities between 180 and 380 W/m-°C. The HiK Aluminum Plates have effective thermal conductivities that are at least several factors higher. ACT has designed and manufactured HiK Aluminum Plates having effective thermal conductivities ranging from 500 to 800 W/m-°C. The following two figures (next column) compare the performances of a conventional aluminum plate (first figure) and a HiK Aluminum Plate (second figure), under the same heat loads. The highest temperature on the aluminum plate is 90.3°C. The highest temperature on the HiK Aluminum Plate is 69.1°C, a 20°C reduction in the hot spot temperature.
|
|
 Temperature Profile on an Aluminum plate
 Temperature Profile on a HiK Aluminum Plate The layout of the embedded heat pipes is often custom optimized based on the heat source profiles and locations. A higher concentration of heat pipes may be embedded in areas on the plate where large heat sources are attached. The embedded heat pipe can be straight or bent for optimum performances. Many electronics cooling applications require the heat spreaders to be able to survive in cold ambient conditions. ACT designs and manufactures its heat pipes to be tolerant of large numbers of working fluid (water) freeze/thaw cycles. Each HiK Aluminum Plate design is qualified by a series of freeze/thaw tests at various orientations. Surface coatings and finishes may be applied to the HiK Aluminum Plates to provide weather resistance as required by specific applications. Additional information on ACT's HiK Aluminum Plate products:
|
| |
  Contact and Visit ACT Information ISO 9001:2000 and AS 9100-B Certification ACT Brochures and Product Datasheets
|
|
|
|
 |
 |
 |
 |
 |
 |
|
 |
|