This article is about components used to cool electronics. For other uses, see Heat sink (disambiguation).
A fan-cooled heat sink on the processor of a personal computer. To the right is a smaller heat sink cooling another integrated circuit of the motherboard.Typical heatsink-fan combination found on a consumer laptop. The heatpipes which contain a working fluid make direct contact with the CPU and GPU, conducting heat away from the component and transferring it to the fin-stack mounted on the exhaust port of the cooling fan. The fin-stack acts as a fluid-to-fluid heat exchanger transferring thermal energy from the working fluid within the heatpipe(s) to ambient air at dead-state condition.A heat sink (aluminum) with its heat pipes (copper) and fan (black)
A heat sink (also commonly spelled heatsink,[1]) is a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device to a fluid medium, often air or a liquid coolant, where it is dissipated away from the device, thereby allowing regulation of the device's temperature. In computers, heat sinks are used to cool CPUs, GPUs, and some chipsets and RAM modules. Heat sinks are used with other high-power semiconductor devices such as power transistors and optoelectronics such as lasers and light-emitting diodes (LEDs), where the heat dissipation ability of the component itself is insufficient to moderate its temperature.
A heat sink is designed to maximize its surface area in contact with the cooling medium surrounding it, such as the air. Air velocity, choice of material, protrusion design and surface treatment are factors that affect the performance of a heat sink. Heat sink attachment methods and thermal interface materials also affect the die temperature of the integrated circuit. Thermal adhesive or thermal paste improve the heat sink's performance by filling air gaps between the heat sink and the heat spreader on the device. A heat sink is usually made out of a material with a high thermal conductivity, such as aluminium or copper.
^"Heatsink". Wiktionary. 3 November 2020. Retrieved 2022-12-14.
A heatsink (also commonly spelled heatsink,) is a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device to...
grease, thermal interface material (TIM), thermal gel, heat paste, heatsink compound, heatsink paste or CPU grease) is a thermally conductive (but usually...
heat from one location (the "source") at a certain temperature to another location (the "sink" or "heatsink") at a higher temperature. Thus a heat pump...
generates work in the working body of the engine while transferring heat to the colder sink until it reaches a lower temperature state. During this process...
a heatsink. Each of these is in contact with some of the fluid in the system, but not all of it. The heat source is positioned lower than the heat sink...
decay heat away to prevent the reactor from running hot Heatsink – Passive heat exchanger that transfers the heat Loop heat pipe – two-phase heat transfer...
the coolant and heats the incoming air. Another example is the heatsink, which is a passive heat exchanger that transfers the heat generated by an electronic...
high temperatures, and have reduced reliability and shorter lifetimes. Heatsinks and other cooling devices and methods are now required for many integrated...
integrated heatsink (Pentium III and Celeron 1.13–1.4 GHz) had mechanical maximum load limits which were designed not be exceeded during heatsink assembly...
maintenance such as regular cleaning of the heatsink via compressed air can prevent dust build-up on the heatsink. Many laptops are difficult to disassemble...
coined, it makes an analogy with heatsink. In massively multiplayer online role-playing games (MMORPGs), time sinks are a method of increasing the time...
Rate, Low Pressure Drop Mini-Channel and Micro-Channel HeatSinks". International Journal of Heat and Mass Transfer. 37 (2): 321–332. Bibcode:1994IJHMT...
temporary heat store by retaining heat within the machine rather than dumping it into the heatsink, thereby increasing its efficiency. The heat is supplied...
designed by Bob Pease, who also worked for National Semiconductor. Without a heatsink at an ambient temperature at 50 °C, a maximum power dissipation of (TJ-TA)/RθJA...
functions, including a physical structure to support the CPU, support for a heatsink, facilitating replacement (as well as reducing cost), and most importantly...
remove heat. This is due to the second law of thermodynamics, which states that heat will only move spontaneously from a hot reservoir (the heatsink) to...
absolute temperatures of the heat source and heatsink: Efficiency ≤ 1 − absolute temperate of heatsink/absolute temperature of heat source It follows that...
it brings heat from one side to the other, so that one side gets cooler while the other gets hotter. The "hot" side is attached to a heatsink so that it...
natural resources are used as heatsinks (i.e. everything that absorbs or dissipates heat). Examples of on-site heatsinks are the upper atmosphere (night...
insulation materials to reduce heat transfer. Electronics cooling: Thermal resistance is crucial for designing heatsinks and thermal management systems...
heatsink and unit itself. The heatsink commonly has a fan mounted to cool the heatsink and the graphics processing unit. Not all cards have heat sinks...
and two heat exchangers, one associated with the external heat source/sink and the other with the interior. In heating mode the external heat exchanger...
(after heat-sinking) is 65 °C (149 °F). This final case temperature is a function of the thermal resistance between the device's case and the heat-sink; and...
used as either a heat source or heatsink, depending on the climate conditions, time of year, and requirements of the building. Heat recovery systems...
the distance between the screw-holes for the heatsink is 72 mm. Such heat-sinks are not interchangeable with heatsinks for sockets that have a distance...
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