IBS Electronics

Accessories and Heatsinks

Heat sinks are vital to a computer to keep it running at its maximum speed. Some heatsinks are used to cool down microprocessors in a computer so they do not overheat and crash the computer. Other uses of heat sinks are to cool discreet components. There are a few different ways heat sinks can cool down a computer. One way heat sinks cool CPUs down is by the use of airflow and thermal conductors. The way this works is there is a metal conductor on the heatsink which absorbs the heat from the microprocessor and uses ambient airflow to cool off the material attached to the heat sink. Sometimes, if natural airflow is not enough cooling power, there is a fan attached to the heat sink to cool it off faster. Another form of heatsinks is liquid cooled heat sinks which use liquid to cool off computer chips and microprocessors. These heat sinks are used when chips run to hot to be cooled by heat sinks using just ambient airflow. Liquid cooled heat sinks can also be used if one would want a quieter computer because these heat sinks do not have fans making noise thus making a computer run quieter. MPJA.com offers many different types of heat sinks, which range from fan cooled heatsinks to liquid cooled heat sinks. We carry heat sinks for Intel processors or AMD processors. There are heat sinks for whatever need one may have. Heat Sinks, Heatsink We have many types of Heatsinks for both microprocessors as well as discreet components. You are sure to find the Heat Sinks for your project. Heat Sinks, Heatsink, Microprocessor Cooling, Thermocoupler Heat Shrink. Heatsinks are used in many pieces of electronics equipment to ensure that heat can be removed from pieces of equipment or particular components within them. For example with microprocessors running very hot these days, they normally have heatsinks clamped or attached to them, and in addition to this fans are also included in PCs to ensure that the components stay cool and operate within their operating temperature ranges. It is not only PCs that contain heat sinks. Many other pieces of equipment contain them. In fact heatsinks are used wherever there are sources of heat, and this heat needs to be removed.

Heatsinks

In some countries preferred types exist. Please consult your local service office.

Heatsinks Type	Rthha 1) natural cooling	Rthha 1) forced air cooling	Basic Profile	w	Suitable for
	°C/W	°C/W		kg
K 0,55 ... 9	0,55 ... 9,0	0,17 ... 0,35		2 ... 0,05	stud mounted devices
P 0,8/120	0,62	-		1,45
P 1,2/100	1,1	-		0,66
C 3/120	2,2	-		0,37
P 30/120	1,0	-		1,0
P 31/120	1,37	-		1,1
P 1/120	0,55	0,20		1,3	isolated modules SEMIPONT, stud mounted devices
P 4/200	0,27	-		4,1

Heatsinks Type	Rthha natural cooling	Rthha forced air cooling	Basic Profile	w	Suitable for
	°C/W	°C/W		kg
P 3/180	0,45	0,14		3,1	SEMIPACK/SEMITRANS
P 13A/125	1,3	-		0,6
P 15/180	0,75	0,25		1,7
R 4A/120	1,35	0,38		0,6
P 33/100	1,9	-		0,4
P 14/120	0,8	1,34		1,15	SEMIPACK/SEMITRANS
P 16/200	-	0,06		4,7	SEMIPACK/SEMITRANS plus SKiiP
P 21/400W/300	0,14	0,01		12,2
P 35/200	0,5	-		2,0	SEMIPACK/SEMITRANS
P 38/200	0,3	-		2,8
P 39/300	0,35	-		4,2
Rthcw
WKM 1	-	0,047		1,14	SEMIPACK/SEMITRANS
WP 16	-	0,02		2,1
P 5A/100	1,4	-		0,28	SEMIPONT

Heatsinks Type	Rthha natural cooling	Rthha forced air cooling	Basic Profile	w	Suitable for
	°C/W	°C/W		kg
2 x P 17/130	0,45	0,08		3,0	double side cooling of capsule devices
2 x P 18/130	0,37	0,08		3,13
2 x P 19/190	0,25	0,07		7,44
2 x P 9/210	0,21	0,055		8,2
2 x P 8/180	0,35	0,07		3,45
2 x P 8,5/180	0,3	0,078		2,9
2 x N 4/250	-	0,05		12,55
2 x P 11/250	0,2	0,05		7,5
2 x U3/300	0,145	0,029		14,2
2 x WF 1	-	0,03 2)		2,2
2 x WF 7	-	0,03 2)		3,0
WK 31	-	0,066 2)		0,83	capsule devices
WK 32	-	0,066 2)		0,61
WK 33	-	0,105 2)		0,64
UE 6/100	0,85	-		1,16	SEMIPACK/SEMITRANS/ SEMIPONT
UE 6/200	0,57	0,069		2,32
2 x UE 6/200	0,29	0,035		4,64
WK 40/180	-	0,017 4)	Water cooled plate	6,4 5)	SKiiPPACK 2-fold
WK 40/240	-	0,016 4)		2,32 5)	SKiiPPACK 3-fold
WK 40/300	-	0,0115 4)		4,64  5)	SKiiPPACK 4-fold

Heatsinks can take a variety of forms, and they are widely available for electronics applications. If only a small amount of heat needs to be removed, small or simple heatsinks can be used. However if significant amounts of heat need to be removed, then more complicated heat sinks are needed. Using some relatively simple thermal calculations, it is possible to determine which heatsinks may be applicable for a given application. They are specified in a way that makes it possible to determine their performance.

Heatsinks are an essential element of many electronics designs. For components that dissipate large amounts of heat, a heatsink is an essential requirement, and often fans may also be needed to assist in the cooling. The thermal calculations needed to select he require heatsink can be quite straightforward, although some thermal calculations to determine more complex thermal issues can be very involved. Fortunately these are rarely needed for home designs.