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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 633 50 ME 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)	4.88W @ 80°C	4.62°C/W	16.39°C/W	Aluminum	Natural Anodized
SK 546 75 AL Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 546	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	2.953" (75.00mm)	3.937" (100.00mm)	-	0.394" (10.00mm)	21.62W @ 80°C	1.02°C/W	3.7°C/W	Aluminum	-
SK 688 100 ME 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)	2.77W @ 80°C	8.15°C/W	28.93°C/W	Aluminum	Natural Anodized
SK 521 100 ME Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 521	-	Active	Board Level, Extrusion	-	-	Rectangular	3.937" (100.00mm)	0.602" (15.30mm)	-	0.315" (8.00mm)	3.48W @ 80°C	6.48°C/W	22.99°C/W	Aluminum	Natural Anodized
SK 521 100 SA Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 521	-	Active	Board Level, Extrusion	-	-	Rectangular	3.937" (100.00mm)	0.602" (15.30mm)	-	0.315" (8.00mm)	3.83W @ 80°C	6.48°C/W	20.9°C/W	Aluminum	Black Anodized
SK 454 100 ME Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 454	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	3.937" (100.00mm)	0.844" (21.45mm)	-	0.748" (19.00mm)	10.7W @ 80°C	2.11°C/W	7.48°C/W	Aluminum	Natural Anodized
SK 653 37,5 SA Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 653	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.476" (37.50mm)	0.827" (21.00mm)	-	0.551" (14.00mm)	5.67W @ 80°C	4.37°C/W	14.1°C/W	Aluminum	Black Anodized
SK 639 25 AL Extruded Heatsink for lock-in re Fischer Elektronik	1,000	RFQ	Datasheet	SK 639	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	0.984" (25.00mm)	1.181" (30.00mm)	-	1.772" (45.00mm)	20.73W @ 80°C	1.07°C/W	3.86°C/W	Aluminum	-
SK 567 37,5 AL Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 567	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.476" (37.50mm)	1.969" (50.00mm)	-	0.984" (25.00mm)	21W @ 80°C	1.05°C/W	3.81°C/W	Aluminum	-
SK 653 37,5 ME Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 653	-	Active	Board Level, Extrusion	-	-	Rectangular	1.476" (37.50mm)	0.827" (21.00mm)	-	0.551" (14.00mm)	5.16W @ 80°C	4.37°C/W	15.5°C/W	Aluminum	Natural Anodized

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