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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 426 37,5 ME Extruded Heatsink Fischer Elektronik	1,000	RFQ	Datasheet	SK 426	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.476" (37.50mm)	2.000" (50.80mm)	-	0.650" (16.51mm)	20.78W @ 80°C	1.08°C/W	3.85°C/W	Aluminum	Natural Anodized
SK 444 37,5 ME Extruded Heatsink Fischer Elektronik	1,000	RFQ	Datasheet	SK 444	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.476" (37.50mm)	2.460" (62.50mm)	-	0.787" (20.00mm)	19.66W @ 80°C	1.15°C/W	4.07°C/W	Aluminum	Natural Anodized
SK 444 37,5 SA Extruded Heatsink Fischer Elektronik	1,000	RFQ	Datasheet	SK 444	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.476" (37.50mm)	2.460" (62.50mm)	-	0.787" (20.00mm)	21.62W @ 80°C	1.15°C/W	3.7°C/W	Aluminum	Black Anodized
SK 426 37,5 SA Extruded Heatsink Fischer Elektronik	1,000	RFQ	Datasheet	SK 426	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.476" (37.50mm)	2.000" (50.80mm)	-	0.650" (16.51mm)	22.86W @ 80°C	1.08°C/W	3.5°C/W	Aluminum	Black Anodized
SK 637 25 SA Extruded Heatsink for lock-in re Fischer Elektronik	1,000	RFQ	Datasheet	SK 637	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	0.984" (25.00mm)	0.906" (23.00mm)	-	1.496" (38.00mm)	23.53W @ 80°C	1.05°C/W	3.4°C/W	Aluminum	Black Anodized
SK 546 50 SA Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 546	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.969" (50.00mm)	3.937" (100.00mm)	-	0.394" (10.00mm)	24.24W @ 80°C	1.02°C/W	3.3°C/W	Aluminum	Black Anodized
SK 546 50 ME Extruded Heatsink Fischer Elektronik	1,000	RFQ	-	SK 546	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.969" (50.00mm)	3.937" (100.00mm)	-	0.394" (10.00mm)	22.04W @ 80°C	1.02°C/W	3.63°C/W	Aluminum	Natural Anodized
SK 567 37,5 SA 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)	23.53W @ 80°C	1.05°C/W	3.4°C/W	Aluminum	Black Anodized
SK 409 25,4 STIC TO 3 P Extruded Heatsink for PCB mounti Fischer Elektronik	1,000	RFQ	-	SK 409	Bulk	Active	Board Level, Extrusion	TO-3-P	Clip	Rectangular	1.000" (25.40mm)	1.772" (45.00mm)	-	0.500" (12.70mm)	9.76W @ 80°C	2.54°C/W	8.2°C/W	Aluminum	Black Anodized
SK 409 25,4 STIS TO 220 Extruded Heatsink for PCB mounti Fischer Elektronik	1,000	RFQ	-	SK 409	Bulk	Active	Board Level, Extrusion	TO-220	Screw	Rectangular	1.000" (25.40mm)	1.772" (45.00mm)	-	0.500" (12.70mm)	9.76W @ 80°C	2.54°C/W	8.2°C/W	Aluminum	Black Anodized

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