Look to Cooling Source as One of the Heatsink Manufacturers That Provide Custom Heatsinks

Cooling Source is one of the heatsink manufacturers that make custom heatsinks. Below is a list of heatsinks the company designs. The heatsinks presented here are only a sample of custom heatsink manufacturers by Cooling Source

Custom aluminum heat sinks are used at nearly every level of electronic cooling because the cost of tooling is low. Cooling Source designs custom aluminum extrusions that are suitable for forced air and natural convection environments.

Die casting heat sinks is a method used by Cooling Source to design custom aluminum heat sinks. The manufacturing process forces liquid aluminum that is under high pressure into steel molds that can be reused. This solution is frequently used when a design calls for low thermal conductivity and high volume.

As one of Livermore, CA's leading heatsink manufacturers, Cooling Source makes custom bonded fin heat sinks. Applications for this type of heat sink include motor drives, variable speed motor controls, and uninterruptible power supplies.

Industries such as transportation, renewable energy, laser and optics, power electronics, medical equipment, and military and space look to heatsink manufacturers for cooling solutions. The custom cold plate options offered by Cooling Source include passive and active cooling solutions. The thermal performance needed dictates the method of manufacturing. For various applications, the methods used include copper brazed, aluminum-vacuumed brazed, machine-path water blocks, epoxy joint, and press-fit copper tubes.

A progressive stamping method is used in the creation of folded fin heat sinks. The fins are bonded to a base with metallurgical bonds such as welding, brazing, or epoxy that are thermally conductive. Folded fin heat sinks combine copper and aluminum to tailor heat sink performance for particular applications.

High conductivity copper is used when heat must be spread over large heat sink bases. When the spread of heat over a large surface is not necessary, low cost and weight aluminum is used by heatsink manufacturers. Common applications requiring folded fin heat sinks are automotive electronics, telecommunications, and power models that require high-density cooling.

Cooling Source makes skived fin heat sinks by literally shaving fins up from an extruded copper or aluminum base. A high fin-to-gap aspect ratio is created by slicing the fins then standing them up individually. Uniform height is maintained by cutting the fin tops. The increased surface area makes a drastic improvement in the thermal performance in environments of forced airflow.

Cooling systems is a one-stop shop for engineered, prototyped, and manufactured thermal solutions. The cutting-edge solutions are backed by knowledgeable engineers and first class customer service. Call them at 952-292-1293.

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Disputing the Effectiveness of Aluminum Over Copper Heatsinks and Praising BGA Heat Sink

A base plate made of copper offers some advantages over aluminum such as transferring heat faster. Because copper retains heat longer, some are of the opinion that a copper base plate at the bottom of an aluminum heatsink is the ideal design because aluminum will transfer heat away from a central processing unit (CPU).

Forced convection is used when heat is released to ambient air. Forced convection efficiency depends on the temperature of the heatsink surface and air velocity. The heatsink material is irrelevant. To say heat is released better in aluminum rather than copper heatsinks is incorrect.

The only thing that matters regarding cooling effect is the temperature of the heatsink that is touched. While aluminum heatsinks are heating and releasing heat in the air, copper heatsinks absorb the energy and stay cooler. A cooler heatsink is best for the CPU.

When in use, the CPU continuously produces heat. The capacity of any heatsink to absorb energy is exhausted quickly. To dissipate heat steadily, both aluminum and copper heatsinks have to reach the same pin temperature. The thermal conductivity of the heatsink is all that matters. The temperature delta of a copper heatsink is smaller, resulting in a cooler CPU.

Copper round BGA heat sinks are highly efficient. They have an ideal omnidirectional flow and convection environment. BGA heat sinks mount with mounting clips or thermal tape to provide optimal cooling for packages over various sizes and airflow.

The high-efficiency BGA heat sinks install easily and have no complex assembly or special board modifications. The heat sinks are made of oxygen-free copper for optimal heat transfer. BGA heat sinks drastically increase gate count, chip input and output, chip size, power consumption, and operating frequency.

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Copper Heat Pipes are Designed as Heatpipes for Military and Commercial Use

Military and commercial designers of heatpipes turn to copper heat pipes that use water as the working fluid for superior power density capacity. The choice is made without regard to gravity or orientation. The copper heat pipes are specifically designed for thermal challenges presented by gravity or high-heat loads.

Long life and reliability are critical. The copper heat pipes have a wick structure made of sintered copper powder that flawlessly operates against gravity and is tough enough to withstand temperatures from -55° C to 180° C and numerous freeze-thaw cycles.

With water as the working fluid, heat moves smoothly through the heatpipes from its source to the point where it is effectively managed through air or liquid dissipation or radiated to space. The heatpipes are integrated into a cold plate or heat sink to improve efficiency and conductivity.

The overall system performance is improved. The integration is accomplished through mechanical, solder, or epoxy interference. Copper heat pipes can last over 20 years. Copper heat pipes transfer heat more evenly than solid copper because they total thermal resistance is lower.

Both planar and cylindrical heatpipe variants have inner surfaces lined with capillary wicking material. Copper heat pipes are extremely effective in high-thermal conductivity. Solid copper conductivity ranges somewhere between 250 to 1500 Watts per meter Kelvin. Heatpipes range from 5000 to 200,000 W/m.K.

A small quantity of water fills the heatpipes. Vaporizing water absorbs the heat. Heat is transported by the vapor to the condenser region. There, the condensed vapor releases the heat to a cooling medium. The condensed water returns to the evaporator by gravity or the heatpipe wick structure. Capillary action is created.

A liquid-vapor phase change occurs in two-phase heat transfer. Passive capillary driven heatpipes are the most common of two-phase systems. Passive two-phase heat transfer devices have been designed, developed, and manufactured since 1970.

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