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 509 50 SA Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 509	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.969" (50.00mm)	1.417" (36.00mm)	-	0.484" (12.30mm)	14.55W @ 80°C	1.7°C/W	5.5°C/W	Aluminum	Black Anodized
SK 548 100 AL Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 548	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	3.937" (100.00mm)	1.969" (50.00mm)	-	0.394" (10.00mm)	11.71W @ 80°C	1.89°C/W	6.83°C/W	Aluminum	-
SK 512 100 SA Extruded Heatsink for lock-in re Fischer Elektronik	1,000	RFQ	-	SK 512	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	3.937" (100.00mm)	0.406" (10.30mm)	-	0.787" (20.00mm)	5.71W @ 80°C	4.34°C/W	14°C/W	Aluminum	Black Anodized
SK 509 50 ME Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 509	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.969" (50.00mm)	1.417" (36.00mm)	-	0.484" (12.30mm)	13.22W @ 80°C	1.7°C/W	6.05°C/W	Aluminum	Natural Anodized
SK 558 37,5 ME Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 558	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.476" (37.50mm)	0.551" (14.00mm)	-	0.551" (14.00mm)	9.09W @ 80°C	2.48°C/W	8.8°C/W	Aluminum	Natural Anodized
SK 558 37,5 SA Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 558	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.476" (37.50mm)	0.551" (14.00mm)	-	0.551" (14.00mm)	10W @ 80°C	2.48°C/W	8°C/W	Aluminum	Black Anodized
SK 676 25 ME Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 676	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	0.984" (25.00mm)	0.472" (12.00mm)	-	0.630" (16.00mm)	8.32W @ 80°C	2.71°C/W	9.62°C/W	Aluminum	Natural Anodized
SK 145 37,5 AL Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 145	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.476" (37.50mm)	1.142" (29.00mm)	-	0.472" (12.00mm)	5.95W @ 80°C	3.72°C/W	13.44°C/W	Aluminum	-
SK 554 37,5 AL Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 554	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.476" (37.50mm)	1.063" (27.00mm)	-	0.394" (10.00mm)	9.28W @ 80°C	2.39°C/W	8.62°C/W	Aluminum	-
SK 564 100 AL Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 564	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	3.937" (100.00mm)	1.457" (37.00mm)	-	0.394" (10.00mm)	8.71W @ 80°C	2.54°C/W	9.18°C/W	Aluminum	-
SK 509 100 AL Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 509	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	3.937" (100.00mm)	1.417" (36.00mm)	-	0.484" (12.30mm)	12.99W @ 80°C	1.7°C/W	6.16°C/W	Aluminum	-
SK 76 50 TO 220 Extruded Heatsink for PCB mounti Fischer Elektronik	1,000	RFQ	-	SK 76	Bulk	Active	Board Level, Extrusion	TO-220	-	Rectangular	1.969" (50.00mm)	1.260" (32.00mm)	-	0.787" (20.00mm)	11.43W @ 80°C	2.17°C/W	7°C/W	Aluminum	Black Anodized
SK 494 25 ME Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 494	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	0.984" (25.00mm)	1.437" (36.50mm)	-	0.236" (6.00mm)	5.82W @ 80°C	3.88°C/W	13.75°C/W	Aluminum	Natural Anodized
SK 494 25 SA Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 494	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	0.984" (25.00mm)	1.437" (36.50mm)	-	0.236" (6.00mm)	6.4W @ 80°C	3.88°C/W	12.50°C/W	Aluminum	Black Anodized
SK 473 50 AL Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 473	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.969" (50.00mm)	1.063" (27.00mm)	-	0.236" (6.00mm)	4.2W @ 80°C	5.27°C/W	19.04°C/W	Aluminum	-
SK 693 50 AL Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 693	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.969" (50.00mm)	0.591" (15.00mm)	-	0.394" (10.00mm)	3.71W @ 80°C	5.97°C/W	21.56°C/W	Aluminum	-
SK 512 100 ME Extruded Heatsink for lock-in re Fischer Elektronik	1,000	RFQ	-	SK 512	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	3.937" (100.00mm)	0.406" (10.30mm)	-	0.787" (20.00mm)	5.19W @ 80°C	4.34°C/W	15.4°C/W	Aluminum	Natural Anodized
SK 494 37,5 AL Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 494	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.476" (37.50mm)	1.437" (36.50mm)	-	0.236" (6.00mm)	5.71W @ 80°C	3.88°C/W	14.00°C/W	Aluminum	-
SK 676 25 SA Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 676	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	0.984" (25.00mm)	0.472" (12.00mm)	-	0.630" (16.00mm)	9.14W @ 80°C	2.71°C/W	8.75°C/W	Aluminum	Black Anodized
SK 468 37,5 ME Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 468	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.476" (37.50mm)	2.008" (51.00mm)	-	0.484" (12.30mm)	14.39W @ 80°C	1.57°C/W	5.56°C/W	Aluminum	Natural Anodized

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