Heat sinks
Overheating of equipment is a very real danger in many productions. But the possibilities for diverting the heat are nearly endless. The many different types of heat sinks can often be customized to fit both the physical and temperature conditions in the specific production.
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The aluminium extrusion process allows to make innumerable shapes profiles. By modifying the shape of the profile, the surface in contact with air changes and consequently the dissipation capability does. The extruded heat sinks are generally used in medium electric power systems both in natural and forced convection.
The extruded heat sinks are presented divided by shape (E, L, H, T, U, P flat back and PC flat back with cover), width and height, and shown in increasing order of size. For example, P400 40 indicates an extruded heat sink having a flat back shape (P), 400 mm wide and 40 mm high.
The clip system, combination of heat sink and clamping clip, is particularly used in PCB electronic circuit boards for the cooling of TO-220, TO-247 and similar packages. Like the conventional screw assembled system, the clip system offers the same performance of heat exchange between heat sink and the electronic device with considerable technical and productivity advantages. In addition to providing an evenly and measured pressure at the center of the semiconductor device, the clip systems greatly simplify both the first phase of assembly and the disassembly-reassembly during maintenance.
The bonded fins heat sink is obtained by assembling the base of the heat sink and the fins using high thermal conductivity epoxy.
Designed for forced convection applications, this family of heat sinks offers high thermal performance along with the best dimensional flexibility.
Obtained from metal plates and sheets made in our industrial group, bonded fins heat sinks do not require dedicated extrusion tool and offer the possibility of combining different materials such as copper and aluminum.
To obtain wider profiles than the ones achievable from extrusion process, it is possible to join together two or more extruded profiles through welding process. This process is extremely flexible to dimensional customer requirements and serviceable for any modification on existing extruded profiles. We provide already bevelled profiles for a higher efficient TIG and MIG welding operation , in addition to the FSW technology on dedicated machines which avoids additional welding material into the heat sink. Welding process certified UNI EN 15085-2 Class 2 e EN ISO 3834-3.
The high performance heat sinks series born from the continuous and growing need to have heat sinks with higher thermal performances.
To reach that purpose, we worked on every single fin section, on fins number and on their layout on the sink. Got by assembling the single fins mechanically, the high performance heat sinks provide an high dimensional flexibility together with the good mechanical characteristics of the extruded heat sinks. The high performance heat sinks are mostly used in high electric power systems in forced convection. The Assembled Profiles (PA) are divided by width and height of the single fin or module and shown in increasing order of size.
A product line of air cooled heat sink fully oriented to the satisfaction of 100% customized projects, adopting the brazing technology to build an endless number of profiles and solutions, using different alloys depending on the requirements of the project itself and without being forced to submit the constraints typical of the extruded profiles: new extrusion dies, size limits, delivery time, MOQ. Maximum flexibility and fast responses for prototypes and serial production is what we offer with this line.
Using copper, stainless steel and aluminum tubes, pressed in base plates made from manufactured aluminum alloys, we can design and produce an unlimited number of custom solutions for each individual project requirement. Our range also offers a series of plates with established dimensions usable for simpler applications already sized to include almost all the commercially available active components.
Newtronic can design embedded tube LCPs to be fully customized for the individual needs of each specific design, regardless of the application for which the plate is designed.
Aluminum alloys produced in our factory with different thermal and mechanical charateristics can be combined with extruded or electro-welded copper, stainless steel, and aluminum tube coils of all diameters and thicknesses, and fitted with connectors of all types both outside and inside the plate perimeter. We form the tube coils with a specific shape that maximizes both the tube adhesion and the size of the contact area between the heat sources and the tube itself. The tubes are mechanically assembled to the base plate using specific tools for each geometry, and high pressure hydraulic presses. The exclusive section shape, pressed in the base plates without glues or resins, maximizes adhesion and minimizes any thermal impedance between the tube coil and the plate, both on the straight and curved parts of the design.
Different geometries in the construction of the base plate and the tube coil allow us to localize and concentrate the best dissipation performance in areas of the plate where the most critical interfaces are positioned, leading to optimised Thermal Conductivity, minimized mechanical and electrochemical resistance, and reduced overall cost: for every design need there is a custom solution, always effective and efficient.
Completely innovative production lines: totally custom made heat sinks but at the same time with the standard solutions specifications.
Made through mechanical assembling of base and fins or in monolithic version, utilizing an exclusive and patented technology, Profilmecc and ProfilmeccPlus guarantee superior thermal performances and mechanical specifications of unequivocal excellence.
