Heat Sinks

Mfr. Part #	Availability	Price	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
SAR45AS-35MM EXTRUDED HEATSINK 29X35MM Sarnikon	500	-	RFQ	Datasheet	45AS	Bulk	Active	Board Level	-	PC Pin	Rectangular, Fins	1.378" (35.00mm)	1.142" (29.00mm)	-	0.453" (11.50mm)	-	-	-	Aluminum	Black Anodized
SK 522 15 ME Extruded Heatsink Fischer Elektronik	1,000	-	RFQ	-	SK 522	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	0.591" (15.00mm)	0.496" (12.60mm)	-	0.256" (6.50mm)	2.86W @ 80°C	7.75°C/W	28°C/W	Aluminum	Natural Anodized
SK 549 37,5 AL Extruded Heatsink Fischer Elektronik	1,000	-	RFQ	-	SK 549	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.476" (37.50mm)	1.378" (35.00mm)	-	0.394" (10.00mm)	11.9W @ 80°C	1.86°C/W	6.72°C/W	Aluminum	-
SK 521 25 SA Extruded Heatsink Fischer Elektronik	1,000	-	RFQ	-	SK 521	-	Active	Board Level, Extrusion	-	-	Rectangular	0.984" (25.00mm)	0.602" (15.30mm)	-	0.315" (8.00mm)	3.83W @ 80°C	6.48°C/W	20.9°C/W	Aluminum	Black Anodized
SK 565 50 SA Extruded Heatsink Fischer Elektronik	1,000	-	RFQ	Datasheet	SK 565	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.969" (50.00mm)	0.394" (10.00mm)	-	0.394" (10.00mm)	2.99W @ 80°C	8.31°C/W	26.8°C/W	Aluminum	Black Anodized
SK 521 75 AL Extruded Heatsink Fischer Elektronik	1,000	-	RFQ	-	SK 521	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	2.953" (75.00mm)	0.602" (15.30mm)	-	0.315" (8.00mm)	3.42W @ 80°C	6.48°C/W	23.41°C/W	Aluminum	-
SK 476 75 AL Extruded Heatsink Fischer Elektronik	1,000	-	RFQ	-	SK 476	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	2.953" (75.00mm)	0.827" (21.00mm)	-	0.236" (6.00mm)	3.4W @ 80°C	6.51°C/W	23.52°C/W	Aluminum	-
SK 550 50 AL Extruded Heatsink Fischer Elektronik	1,000	-	RFQ	-	SK 550	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.969" (50.00mm)	1.142" (29.00mm)	-	0.453" (11.50mm)	8.93W @ 80°C	2.48°C/W	8.96°C/W	Aluminum	-
SK 552 75 AL Extruded Heatsink Fischer Elektronik	1,000	-	RFQ	-	SK 552	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	2.953" (75.00mm)	0.551" (14.00mm)	-	0.394" (10.00mm)	7.29W @ 80°C	3.04°C/W	10.98°C/W	Aluminum	-
SK 522 15 SA Extruded Heatsink Fischer Elektronik	1,000	-	RFQ	-	SK 522	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	0.591" (15.00mm)	0.496" (12.60mm)	-	0.256" (6.50mm)	3.2W @ 80°C	7.75°C/W	25°C/W	Aluminum	Black Anodized
SK 521 25 ME Extruded Heatsink Fischer Elektronik	1,000	-	RFQ	-	SK 521	-	Active	Board Level, Extrusion	-	-	Rectangular	0.984" (25.00mm)	0.602" (15.30mm)	-	0.315" (8.00mm)	3.48W @ 80°C	6.48°C/W	22.99°C/W	Aluminum	Natural Anodized
SK 565 50 ME Extruded Heatsink Fischer Elektronik	1,000	-	RFQ	-	SK 565	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.969" (50.00mm)	0.394" (10.00mm)	-	0.394" (10.00mm)	2.71W @ 80°C	8.31°C/W	29.48°C/W	Aluminum	Natural Anodized
FK 227 SA L 1 TO 220 Fans, Blower, Thermal Management Fischer Elektronik	1,000	-	RFQ	Datasheet	FK 227	Bulk	Active	Board Level	TO-220	Bolt On	Rectangular	0.701" (17.80mm)	1.772" (45.00mm)	-	0.346" (8.80mm)	3.6W	-	22.00°C/W	Aluminum	-
SAR21ASX40MM EXTRUDED HEATSINK 21X40MM Sarnikon	400	-	RFQ	Datasheet	21AS	Bulk	Active	Board Level	-	PC Pin	Rectangular, Fins	1.575" (40.00mm)	0.827" (21.00mm)	-	0.467" (11.85mm)	-	-	-	Aluminum	Natural Anodized
SK 448 50 AL Extruded Heatsink Fischer Elektronik	1,000	-	RFQ	Datasheet	SK 448	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.969" (50.00mm)	1.100" (27.95mm)	-	0.492" (12.50mm)	9.52W @ 80°C	2.33°C/W	8.4°C/W	Aluminum	-
SK 420 37,5 AL Extruded Heatsink Fischer Elektronik	1,000	-	RFQ	Datasheet	SK 420	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.476" (37.50mm)	1.575" (40.00mm)	-	0.315" (8.00mm)	10.2W @ 80°C	2.17°C/W	7.84°C/W	Aluminum	-
SK 563 37,5 AL Extruded Heatsink Fischer Elektronik	1,000	-	RFQ	-	SK 563	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.476" (37.50mm)	1.457" (37.00mm)	-	0.236" (6.00mm)	6.49W @ 80°C	3.41°C/W	12.32°C/W	Aluminum	-
SKK 510 TO 5 Fans, Blower, Thermal Management Fischer Elektronik	1,000	-	RFQ	Datasheet	SKK 510	Bulk	Active	Board Level	TO-5	Clip	Round	-	-	0.319" (8.10mm) ID, 0.500" (12.70mm) OD	-	1.8W	-	44.00°C/W	Aluminum	-
SK 478 37,5 ME Extruded Heatsink Fischer Elektronik	1,000	-	RFQ	-	SK 478	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.476" (37.50mm)	0.551" (14.00mm)	-	0.236" (6.00mm)	2.74W @ 80°C	8.22°C/W	29.15°C/W	Aluminum	Natural Anodized
SK 478 37,5 SA Extruded Heatsink Fischer Elektronik	1,000	-	RFQ	-	SK 478	Bulk	Active	Board Level, Extrusion	-	-	Rectangular	1.476" (37.50mm)	0.551" (14.00mm)	-	0.236" (6.00mm)	3.02W @ 80°C	8.22°C/W	26.5°C/W	Aluminum	Black Anodized

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