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Home > Products > Fans, Blowers, Thermal Management > Thermal > Heat Sinks

Heat Sinks

Mfr. Part #	Availability	Quantity	Datasheet	Series	Packaging	Product Status	Type	Package Cooled	Attachment Method	Shape	Length	Width	Diameter	Fin Height	Power Dissipation @ Temperature Rise	Thermal Resistance @ Forced Air Flow	Thermal Resistance @ Natural	Material	Material Finish
SK 490 50 AL Extruded Heatsink for lock-in re Fischer Elektronik	1,000	RFQ	-	SK 490	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.969" (50.00mm)	1.969" (50.00mm)	-	0.433" (11.00mm)	15.53W @ 80°C	1.43°C/W	5.15°C/W	Aluminum	-
SK 637 37,5 AL Extruded Heatsink for lock-in re Fischer Elektronik	1,000	RFQ	Datasheet	SK 637	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.476" (37.50mm)	0.906" (23.00mm)	-	1.496" (38.00mm)	21W @ 80°C	1.05°C/W	3.81°C/W	Aluminum	-
SK 631 100 SA Extruded Heatsink Fischer Elektronik	1,000	RFQ	Datasheet	SK 631	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	3.937" (100.00mm)	0.748" (19.00mm)	-	0.236" (6.00mm)	3.28W @ 80°C	7.56°C/W	24.4°C/W	Aluminum	Black Anodized
SK 634 50 ME Extruded Heatsink Fischer Elektronik	1,000	RFQ	Datasheet	SK 634	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.969" (50.00mm)	1.299" (33.00mm)	-	0.236" (6.00mm)	5.31W @ 80°C	4.25°C/W	15.07°C/W	Aluminum	Natural Anodized
SK 657 37,5 AL Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 657	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.476" (37.50mm)	1.449" (36.80mm)	-	0.984" (25.00mm)	15.87W @ 80°C	1.40°C/W	5.04°C/W	Aluminum	-
SK 499 50 AL Extruded Heatsink for lock-in re Fischer Elektronik	1,000	RFQ	-	SK 499	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.969" (50.00mm)	1.996" (50.70mm)	-	1.260" (32.00mm)	27.97W @ 80°C	0.79°C/W	2.86°C/W	Aluminum	-
SK 63 50 ME Extruded Heatsink Fischer Elektronik	1,000	RFQ	Datasheet	SK 63	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.969" (50.00mm)	2.559" 65.00mm)	-	1.063" (27.00mm)	29.09W @ 80°C	0.78°C/W	2.75°C/W	Aluminum	Natural Anodized
SK 551 100 SA Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 551	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	3.937" (100.00mm)	0.953" (24.20mm)	-	0.484" (12.30mm)	10.53W @ 80°C	2.36°C/W	7.6°C/W	Aluminum	Black Anodized
SK 688 100 SA Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 688	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	3.937" (100.00mm)	0.591" (15.00mm)	-	0.236" (6.00mm)	3.04W @ 80°C	8.15°C/W	26.3°C/W	Aluminum	Black Anodized
SK 633 50 SA Extruded Heatsink Fischer Elektronik	1,000	RFQ	Datasheet	SK 633	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.969" (50.00mm)	0.748" (19.00mm)	-	0.551" (14.00mm)	5.37W @ 80°C	4.62°C/W	14.9°C/W	Aluminum	Black Anodized

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