Неисправность теплопроводки ноутбука


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Техническое ознакомление

  Неисправность теплопроводки ноутбука

HEATSINK CONSTRUCTION

There are many designs for heatsinks, but they typically comprise a base and a number of protrusions attached to this base. The base is the feature that interfaces with the device to be cooled. Heat is conducted through the base into the protrusions. The protrusions can take several forms, including:

SQ_PLATEFIN

Copper heatsink

SQ ELLIPTICAL fin

Heatsinks are usually constructed from copper or aluminum. Copper has a very high thermal conductivity, which means the rate of heat transfer through copper heatsinks is also very high. Whilst lower than that of copper, aluminum's thermal conductivity is still high and it has the added benefits of lower cost and lower density, making it useful for applications where weight is a major concern.

HEATSINK PERFORMANCE

The performance of heatsinks are a consequence of many parameters, including:

  • Geometry
  • Material
  • Surface treatment
  • Air velocity
  • Interface with device

The last item is very important. Whilst electronic components and heatsink bases are manufactured to be very flat and smooth, at a microscopic level their surfaces are rough. This results in very few points of contact and many tiny air gaps between the component and its heat sink. Air has a low thermal conductivity, resulting in poor conduction of heat from the device to the heatsink. To combat this, a thermal interface material (TIM) can be applied to the base of the heatsink to fill these gaps and provide more conduction paths between device and heatsink.

Air gaps between device and heatsink

Air gaps between device and heatsink base negatively impact the conduction path

Thermal interface material (TIM) fills the air gaps

Thermal interface material (TIM) fills the air gaps, significantly improving the conduction path

Heatsink

Heatsink performance is characterized by its thermal resistance. This parameter can be thought of as the difference in temperature between the air around the heatsink and the device surface in contact with the heat sink per unit of input power. Thermal resistance is denoted by the symbol θ and has the unit °C/W.

The junction temperature (TJ) is the temperature of the hottest part of the device. This is the critical temperature for its correct operation. The case temperature (TC) is the temperature of the surface of the device which is in contact with the heatsink assembly. TC is lower than TJ due to the junction-to-case thermal resistance (θJC). The performance of the heatsink assembly is defined by the case-to-ambient thermal resistance (θCA). This is the difference in temperature between the device surface (TC) and the surrounding air (TA) for a unit of input power.

The increase in TJ over TA for each Watt of thermal power the device generates is the sum of θJC and θCA.

HEATSINK MANUFACTURING METHODS

Heatsinks can be manufactured in a variety of ways depending on the required performance, cost and volume. These include:

  • Machining - where a CNC machine is used to cut the metal
  • Extrusion - where metal is heated and pushed through a mold
  • Forging - where metal is heated and shaped by pressurization
  • Stamping - where the metal fin is cut, and then soldered onto the base
  • Skiving - where a blade is used to slice, and push up the single block of metal

For more complex thermal issues, heatpipes and vapor chambers may be employed within the heatsink assembly. These devices are sealed objects containing a fluid (typically water) and utilize the release of heat during fluid phase changes to vastly increase their conductivity when compared to a solid metallic object of the same geometry.

Radian Thermal Products offers all these manufacturing techniques and we can therefore provide an unbiased approach to each thermal requirement.

BGA Platefin Heatsinks

Plate Fin Heatsink

Radian’s BGA Aluminum plate fin designs are high efficiency heatsink cooling products which are ideal for linear air-flow environments. These BGA heat sink devices mount with EZ Snap™ mounting clips and / or thermal tape to provide optimum cooling for various package sizes and airflow. These off-the-shelf, high efficiency heatsink solutions are easy to install and require no special board modifications or complex assemblies. The heatsinks are constructed of extruded aluminum for optimum heat transfer. Designed specifically for BGAs and other surface mount packages then finished with black anodize plating.

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Radian Part Number Type Material Style Length (mm) Width (mm) Height (mm) Theta SA at 200LFM Theta SA at 400LFM Theta SA at 600LFM Store
HS1800EB BGA Aluminum Plate Fin 21 21 12.7 6.7 4.3 3.4 View
HS1801EB BGA Aluminum Plate Fin 23 23 12.7 5.8 3.6 2.8 View
HS18020EB BGA Aluminum Plate Fin 25 25 12.7 4.9 3 2.4 View
HS18030EB BGA Aluminum Plate Fin 27 27 12.7 4.5 2.7 2.1 View
HS1804EB BGA Aluminum Plate Fin 29 29 12.7 3.8 2.2 1.7 View
HS1805EB BGA Aluminum Plate Fin 31 31 12.7 3.5 2.1 1.6 View
HS1806EB BGA Aluminum Plate Fin 32.5 32.5 12.7 3.3 1.9 1.5 View
HS1807EB BGA Aluminum Plate Fin 35 35 12.7 2.9 1.7 1.3 View
HS1808EB BGA Aluminum Plate Fin 37.5 37.5 12.7 2.6 1.5 1.2 View
HS1809EB BGA Aluminum Plate Fin 40 40 12.7 2.4 1.4 1 View
HS1810EB BGA Aluminum Plate Fin 42.5 42.5 12.7 2.2 1.3 0.9 View
HS1811EB BGA Aluminum Plate Fin 45 45 12.7 2.1 1.2 0.9 View
INC19001-8/1.5 BGA Aluminum Plate Fin 13.2 18.5 8.4 14 9.7 8.1 View
INC27001-7/1.5 BGA Aluminum Plate Fin 21.6 26.8 7.1 9.2 5.8 4.6 View
INC31001-7/1.5 BGA Aluminum Plate Fin 26.9 30.5 7.1 6.3 3.8 2.8 View

Showing 1 to 15 of 73 entries

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Platefin Heatsinks with screws

DC PlateRadian’s Plate Fin designs are constructed of die cast aluminum and are ideal for omni directional airflow or convection environments. These off-the-shelf, high efficiency heatsink solutions are easy to install with four M3 mounting screws ranging from 4-8mm in length.

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Part Type Style Material Length (mm) Width (mm) Height (mm) Theta SA at 200LFM Theta SA at 400LFM Theta SA at 600LFM Part
HS1567EB Pushpin Platefin Aluminum 57.9 36.8 5.8 4.1 2.4 1.8 View
HS1568EB Pushpin Platefin Aluminum 57.9 36.8 11.4 2.2 1.3 1 View
HS1569EB Pushpin Platefin Aluminum 57.9 36.8 17.8 1.4 0.9 0.7 View
HS1570EB Pushpin Platefin Aluminum 57.9 36.8 22.9 1.2 0.7 0.5 View
HS1571EB Pushpin Platefin Aluminum 57.9 36.8 5.8 3.2 2 1.6 View
HS1573EB Pushpin Platefin Aluminum 57.9 36.8 17.8 1.1 0.8 0.6 View
HS1574EB Pushpin Platefin Aluminum 57.9 36.8 22.9 0.9 0.6 0.5 View
HS1575EB DCDC Platefin Aluminum 61 57.9 22.9 2.6 1.6 1.2 View
HS1576EB DCDC Platefin Aluminum 61 57.9 11.4 1.4 0.8 0.6 View
HS1577EB DCDC Platefin Aluminum 61 57.9 17.8 0.9 0.5 0.4 View
HS1578EB DCDC Platefin Aluminum 61 57.9 22.9 0.7 0.4 0.3 View
HS1579EB Pushpin Platefin Aluminum 61 57.9 5.8 2.7 1.7 1.3 View
HS1580EB Pushpin Platefin Aluminum 61 57.9 11.4 1.5 1 0.8 View
HS1581EB Pushpin Platefin Aluminum 61 57.9 17.8 1 0.6 0.5 View
HS1582EB Pushpin Platefin Aluminum 61 57.9 22.9 0.8 0.5 0.4 View

Showing 1 to 15 of 22 entries

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BGA Aluminum Round Pin Heatsink

BGA Aluminum Round Pin HeatsinksRadian’s BGA Aluminum Round Pin is a high efficiency heatsink cooling product which is ideal for omni-directional air flow and convection environments. These devices mount with EZ SnapTM mounting clips and / or thermal tape for various package sizes and airflow.

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Radian Part Number Type Material Style Length (mm) Width (mm) Height (mm) Theta SA at 200LFM Theta SA at 400LFM Theta SA at 600LFM Store
INM19002-12P/2-6 BGA Aluminum Roundpin 19 19 11.6 6.87 4.95 4.26 View
INM19002-15P/2.6 BGA Aluminum Roundpin 19 19 14.6 6.56 4.66 3.96 View
INM19002-20P/2.6 BGA Aluminum Roundpin 19 19 19.6 5.1 3.7 3 View
INM19002-25P/2.6 BGA Aluminum Roundpin 19 19 24.6 4.7 3.4 2.7 View
INM27002-12P/2.6 BGA Aluminum Roundpin 27 27 11.6 5.04 3.21 2.38 View
INM27002-15P/2.6 BGA Aluminum Roundpin 27 27 14.6 4.67 2.93 2.17 View
INM27002-20P/2.6 BGA Aluminum Roundpin 27 27 19.6 3.1 2.2 1.9 View
INM27002-25P/2.6 BGA Aluminum Roundpin 27 27 24.6 2.8 2 1.7 View
INM29002-25P/2.6 BGA Aluminum Roundpin 29 29 24.6 2.5 1.8 1.4 View
INM33002-12P/2.6 BGA Aluminum Roundpin 33 33 11.6 3.46 2.25 1.66 View
INM33002-15P/2.6 BGA Aluminum Roundpin 33 33 14.6 3.27 2.05 1.48 View
INM33002-20P/2.6 BGA Aluminum Roundpin 33 33 19.6 2.3 1.6 1.3 View
INM33002-25P/2.6 BGA Aluminum Roundpin 33 33 24.6 1.9 1.4 1.2 View
INM35002-12P/2.6 BGA Aluminum Roundpin 35 35 11.6 3.18 2.04 1.53 View
INM35002-15P/2.6 BGA Aluminum Roundpin 35 35 14.6 2.97 1.87 1.37 View

Showing 1 to 15 of 27 entries

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BGA Copper Round Pin Heatsink

copper Roundpin BGARadian’s copper round pin design is a high efficiency heatsink cooling products which is ideal for omni-directional airflow and convection environments. These BGA Heatsink devices mount with EZ Snap™ mounting clips and / or thermal tape to provide optimum cooling for various package sizes and airflow. These off-the-shelf, high efficiency heatsink solutions are easy to install and require no special board modifications or complex assemblies. The heatsinks are constructed of forged CU1100 oxygen-free copper for optimum heat transfer.

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Radian Part Number Type Material Style Length (mm) Width (mm) Height (mm) Theta SA at 200LFM Theta SA at 400LFM Theta SA at 600LFM Store
INM19002-12PCU/2.6 BGA Copper Roundpin 19 19 11.6 6.08 4.39 2.95 View
INM19002-15PCU/2.6 BGA Copper Roundpin 19 19 14.6 5.79 4.12 3.47 View
INM19002-20PCU/2.6 BGA Copper Roundpin 19 19 19.6 4.2 3.1 2.6 View
INM19002-25PCU/2.6 BGA Copper Roundpin 19 19 24.6 3.9 2.9 2.4 View
INM27002-12PCU/2.6 BGA Copper Roundpin 27 27 11.6 4.34 3.05 2.36 View
INM27002-15PCU/2.6 BGA Copper Roundpin 27 27 14.6 4.07 2.83 2.15 View
INM27002-20PCU/2.6 BGA Copper Roundpin 27 27 19.6 2.8 2.1 1.7 View
INM27002-25PCU/2.6 BGA Copper Roundpin 27 27 24.6 2.6 1.9 1.6 View
INM29002-12PCU/2.6 BGA Copper Roundpin 29 29 11.6 3.93 2.59 2 View
INM29002-15PCU/2.6 BGA Copper Roundpin 29 29 14.6 3.65 2.38 1.81 View
INM33002-15PCU/2.6 BGA Copper Roundpin 33 33 14.6 3.01 2.01 1.43 View
INM33002-20PCU/2.6 BGA Copper Roundpin 33 33 19.6 1.8 1.1 0.9 View
INM33002-25PCU/2.6 BGA Copper Roundpin 33 33 24.6 1.6 1 0.8 View
INM35002-12PCU/2.6 BGA Copper Roundpin 35 35 11.6 3.13 2.02 1.5 View
INM35002-15PCU/2.6 BGA Copper Roundpin 35 35 14.6 2.83 1.79 1.33 View

Showing 1 to 15 of 25 entries

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Roundpin heatsink with screws

DC RoundpinRadian’s Round pin designs are constructed of die cast aluminum and are ideal for omni directional airflow or convection environments. These off-the-shelf, high efficiency heatsink solutions are easy to install with four M3 mounting screws ranging from 4-8mm in length.

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Radian Part Number Type Material Style Length (mm) Width (mm) Height (mm) Theta SA at 200LFM Theta SA at 400LFM Theta SA at 600LFM Store
HS2065DB DCDC Aluminum Roundpin 57.9 36.8 5.8 3.9 2.5 2 View
HS2066DB DCDC Aluminum Roundpin 57.9 36.8 11.4 2.3 1.5 1.2 View
HS2067DB DCDC Aluminum Roundpin 61 57.9 5.8 3.1 2 1.5 View
HS2069DB DCDC Aluminum Roundpin 61 57.9 11.4 1.8 1.1 0.9 View
HS2071DB DCDC Aluminum Roundpin 116.8 61 11.4 1 0.6 0.5 View
HS2073DB DCDC Aluminum Roundpin 116.8 61 17.8 0.7 0.5 0.4 View
HS2074DB DCDC Aluminum Roundpin 61 57.9 17.8 1.4 0.9 0.7 View
HS2075DB DCDC Aluminum Roundpin 57.9 36.8 17.8 1.5 1 0.8 View
HS2158DB DCDC Aluminum Roundpin 61 57.9 22.9 1.4 1 0.8 View
HS2159DB DCDC Aluminum Roundpin 57.9 36.8 22.9 1.4 1 0.8 View
HS2160DB DCDC Aluminum Roundpin 116.8 61 22.9 0.6 0.4 0.3 View

Showing 1 to 11 of 11 entries

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Round Pin Heatsink with Pushpins

Round Pin Heatsinks with pushpinsThe INM37.5 Series of aluminum and copper round pin designs are high efficiency heatsink cooling products which are ideal for omni-directional air flow.

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Radian Part Number Type Material Style Length (mm) Width (mm) Height (mm) Theta SA Theta SA at 400LFM Theta SA at 600LFM Store
inm37-5004-12P/2-6 Pushpin Aluminum Roundpin 37.5 37.5 11.6 2.74 1.77 1.4 View
inm37-5004-12PCU/2-6 Pushpin Aluminum Roundpin 37.5 37.5 11.6 22678 1.67 1.31 View
inm37-5004-15PCU/2-6 Pushpin Aluminum Roundpin 37.5 37.5 14.6 2.22 1.44 1.11 View
inm37-5004-20P/2-6 Pushpin Aluminum Roundpin 37.5 37.5 19.6 1.8 1.4 1.2 View
inm37-5004-25P/2-6 Pushpin Aluminum Roundpin 37.5 37.5 24.6 1.4 1.1 0.8 View
inm37-5004-25PCU/2-6 Pushpin Aluminum Roundpin 37.5 37.5 24.6 1.5 0.9 0.7 View

Showing 1 to 6 of 6 entries

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Small Round Pin Heatsink

small roundpinThe Miniature Series of aluminum heatsinks are high efficiency cooling products which are ideal for omni-directional airflow. These devices may be packaged with optional thermal tape to facilitate installation of the heatsinks.

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Radian Part Number Type Material Style Length (mm) Width (mm) Height (mm) Theta SA at 200LFM Theta SA at 400LFM Theta SA at 600LFM Store
CS2005 Stick-on Roundpin Heatsink, Aluminum, 13 X 13 X 13mm Roundpin 13 X 13 X 13 12.7 12.7 12.7 11 7 5.6 View
CS2006 Stick-on Roundpin Heatsink, Aluminum, 13 X 13 X 8mm Roundpin 13 X 13 X 8 12.7 12.7 7.6 18 11.5 9.2 View
CS2058 Stick-on Roundpin Heatsink, Aluminum, 13 X 13 X 6mm Roundpin 13 X 13 X 6 12.7 12.7 5.8 34.6 21.4 16.4 View

Showing 1 to 3 of 3 entries

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BGA Elliptical fin Heatsinks

Elliptical Fin HeatsinkRadian has a wide range of Elliptical Fin designs that are available to ship within a few days. If a part or BGA heatsink size is not available online we can usually offer an alternative part, or modify a part in stock to fit your needs. For lower volumes, we can also precision machine a cross-cut heatsink to fit our EZ-snap clip, that can offer similar performance, and for larger volumes a precision casting can be made for your exact requirements. Please contact us if you need help selecting the correct solution.

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Radian Part Number Type Material Style Length (mm) Width (mm) Height (mm) Theta SA at 200LFM Theta SA at 400LFM Theta SA at 600LFM Store
INM17001-11W/1.7 BGA Aluminum Elliptical 17 17 10.7 7.8 6.1 5.43 View
INM17001-14W/1.7 BGA Aluminum Elliptical 17 17 13.7 7.16 5.54 4.82 View
INM17001-17W/1.7 BGA Aluminum Elliptical 17 17 16.7 6.55 5.03 4.31 View
INM17001-22W/1.7 BGA Aluminum Elliptical 17 17 21.7 5.74 4.36 3.69 View
INM17001-27W/1.7 BGA Aluminum Elliptical 17 17 26.7 5.29 4 3.41 View
INM17001-32W/1.7 BGA Aluminum Elliptical 17 17 31.7 4.83 3.66 3.18 View
INM19001-15W/2.6 BGA Aluminum Elliptical 19 19 14.6 5.89 4.48 3.84 View
INM19001-18W/2.6 BGA Aluminum Elliptical 19 19 17.6 5.45 4.03 3.48 View
INM19001-23W/2.6 BGA Aluminum Elliptical 19 19 22.6 4.7 3.46 2.98 View
INM19001-28W/2.6 BGA Aluminum Elliptical 19 19 27.6 4.21 3.15 2.74 View
INM19001-33W/2.6 BGA Aluminum Elliptical 19 19 32.6 3.88 2.88 2.54 View
INM21001-15W/2.6 BGA Aluminum Elliptical 21 21 14.6 5.1 3.46 2.82 View
INM21001-28W/2.6 BGA Aluminum Elliptical 21 21 27.6 3.74 2.52 2.04 View
INM21001-33W/2.6 BGA Aluminum Elliptical 21 21 32.6 3.43 2.29 1.9 View
INM23001-15W/2.6 BGA Aluminum Elliptical 23 23 14.6 4.22 2.94 2.46 View



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