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    Manufacturer 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 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    Photo 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
    SK 552 1000 AL

    SK 552 1000 AL

    Extruded Heatsink

    Fischer Elektronik

    1,000
    RFQ
    SK 552 1000 AL

    Datasheet

    SK 552 Bulk Active Board Level, Extrusion - - Rectangular 39.370" (1000.00mm) 0.551" (14.00mm) - 0.394" (10.00mm) 7.29W @ 80°C 3.04°C/W 10.98°C/W Aluminum -
    SK 459 50 STSB TO 247

    SK 459 50 STSB TO 247

    Extruded Heatsink for PCB mounti

    Fischer Elektronik

    1,000
    RFQ
    SK 459 50 STSB TO 247

    Datasheet

    SK 459 - Active Board Level, Extrusion TO-247 Screw Rectangular 1.969" (50.00mm) 1.969" (50.00mm) - 0.787" (20.00mm) 14.29W @ 80°C 1.74°C/W 5.6°C/W Aluminum Black Anodized
    SK 459 50 STSB TO 220

    SK 459 50 STSB TO 220

    Extruded Heatsink for PCB mounti

    Fischer Elektronik

    1,000
    RFQ
    SK 459 50 STSB TO 220

    Datasheet

    SK 459 Bulk Active Board Level, Extrusion TO-220 Screw Rectangular 1.969" (50.00mm) 1.969" (50.00mm) - 0.787" (20.00mm) 14.29W @ 80°C 1.74°C/W 5.6°C/W Aluminum Black Anodized
    SK 459 50 STSB TO 218

    SK 459 50 STSB TO 218

    Extruded Heatsink for PCB mounti

    Fischer Elektronik

    1,000
    RFQ
    SK 459 50 STSB TO 218

    Datasheet

    SK 459 Bulk Active Board Level, Extrusion TO-218 Screw Rectangular 1.969" (50.00mm) 1.969" (50.00mm) - 0.787" (20.00mm) 14.29W @ 80°C 1.74°C/W 5.6°C/W Aluminum Black Anodized
    SK 459 50 M STSB SIP-Multiwatt

    SK 459 50 M STSB SIP-Multiwatt

    Extruded Heatsink for PCB mounti

    Fischer Elektronik

    1,000
    RFQ
    SK 459 50 M STSB SIP-Multiwatt

    Datasheet

    SK 459 - Active Board Level, Extrusion SIP Screw Rectangular 1.969" (50.00mm) 1.969" (50.00mm) - 0.787" (20.00mm) 14.29W @ 80°C 1.74°C/W 5.6°C/W Aluminum Black Anodized
    SK 459 50 STSB TO 248

    SK 459 50 STSB TO 248

    Extruded Heatsink for PCB mounti

    Fischer Elektronik

    1,000
    RFQ
    SK 459 50 STSB TO 248

    Datasheet

    SK 459 Bulk Active Board Level, Extrusion TO-248 Screw Rectangular 1.969" (50.00mm) 1.969" (50.00mm) - 0.787" (20.00mm) 14.29W @ 80°C 1.74°C/W 5.6°C/W Aluminum Black Anodized
    SK 649 75 ME

    SK 649 75 ME

    Extruded Heatsink

    Fischer Elektronik

    1,000
    RFQ
    SK 649 75 ME

    Datasheet

    SK 649 Bulk Active Board Level, Extrusion - - Rectangular 2.953" (75.00mm) 2.441" (62.00mm) - 0.827" (21.00mm) 19.42W @ 80°C 1.16°C/W 4.12°C/W Aluminum Natural Anodized
    SK 649 75 SA

    SK 649 75 SA

    Extruded Heatsink

    Fischer Elektronik

    1,000
    RFQ
    SK 649 75 SA

    Datasheet

    SK 649 Bulk Active Board Level, Extrusion - - Rectangular 2.953" (75.00mm) 2.441" (62.00mm) - 0.827" (21.00mm) 21.33W @ 80°C 1.16°C/W 3.75°C/W Aluminum Black Anodized
    SK 640 100 AL

    SK 640 100 AL

    Extruded Heatsink for lock-in re

    Fischer Elektronik

    1,000
    RFQ
    SK 640 100 AL

    Datasheet

    SK 640 Bulk Active Board Level, Extrusion - - Rectangular 3.937" (100.00mm) 1.181" (30.00mm) - 2.323" (59.00mm) 20.41W @ 80°C 1.08°C/W 3.92°C/W Aluminum -
    SK 421 75 AL

    SK 421 75 AL

    Extruded Heatsink

    Fischer Elektronik

    1,000
    RFQ
    SK 421 75 AL

    Datasheet

    SK 421 Bulk Active Board Level, Extrusion - - Rectangular 2.953" (75.00mm) 6.575" (167.00mm) - 0.591" (15.00mm) 53.57W @ 105°C 0.54°C/W 1.96°C/W Aluminum -
    SK 03 100 ME

    SK 03 100 ME

    Extruded Heatsink

    Fischer Elektronik

    1,000
    RFQ
    SK 03 100 ME

    Datasheet

    SK 03 Bulk Active Board Level, Extrusion - - Rectangular 3.937" (100.00mm) 4.724" (120.00mm) - 1.260" (32.00mm) 45.45W @ 105°C 0.65°C/W 2.31°C/W Aluminum Natural Anodized
    SK 647 50 ME

    SK 647 50 ME

    Extruded Heatsink

    Fischer Elektronik

    1,000
    RFQ
    SK 647 50 ME

    Datasheet

    SK 647 Bulk Active Board Level, Extrusion - - Rectangular 1.969" (50.00mm) 2.402" (61.00mm) - 1.575" (40.00mm) 36.36W @ 80°C 0.62°C/W 2.2°C/W Aluminum Natural Anodized
    SK 407 100 AL

    SK 407 100 AL

    Extruded Heatsink

    Fischer Elektronik

    1,000
    RFQ
    SK 407 100 AL

    Datasheet

    SK 407 Bulk Active Board Level, Extrusion - - Rectangular 3.937" (100.00mm) 3.268" (83.00mm) - 0.984" (25.00mm) 32.52W @ 80°C 0.68°C/W 2.46°C/W Aluminum -
    SK 405 100 AL

    SK 405 100 AL

    Extruded Heatsink

    Fischer Elektronik

    1,000
    RFQ
    SK 405 100 AL

    Datasheet

    SK 405 Bulk Active Board Level, Extrusion - - Rectangular 3.937" (100.00mm) 6.654" (169.00mm) - 0.394" (10.00mm) 36.08W @ 105°C 0.81°C/W 2.91°C/W Aluminum -
    SK 647 50 SA

    SK 647 50 SA

    Extruded Heatsink

    Fischer Elektronik

    1,000
    RFQ
    SK 647 50 SA

    Datasheet

    SK 647 Bulk Active Board Level, Extrusion - - Rectangular 1.969" (50.00mm) 2.402" (61.00mm) - 1.575" (40.00mm) 40W @ 80°C 0.62°C/W 2°C/W Aluminum Black Anodized
    SK 589 100 AL

    SK 589 100 AL

    Extruded Heatsink for lock-in re

    Fischer Elektronik

    1,000
    RFQ
    SK 589 100 AL

    Datasheet

    SK 589 Bulk Active Board Level, Extrusion - - Rectangular 3.937" (100.00mm) 1.299" (33.00mm) - 2.618" (66.50mm) 21W @ 80°C 1.05°C/W 3.81°C/W Aluminum -
    SK 03 100 SA

    SK 03 100 SA

    Extruded Heatsink

    Fischer Elektronik

    1,000
    RFQ
    SK 03 100 SA

    Datasheet

    SK 03 Bulk Active Board Level, Extrusion - - Rectangular 3.937" (100.00mm) 4.724" (120.00mm) - 1.260" (32.00mm) 50W @ 105°C 0.65°C/W 2.1°C/W Aluminum Black Anodized
    ALB-821AS-25

    ALB-821AS-25

    0.827'' (21mm) Wide Heatsink

    Alberko Heatsinkonline

    500
    RFQ
    ALB-821AS-25

    Datasheet

    ALB-821AS Retail Package Active Top Mount - Thermal Tape, Adhesive (Not Included) Rectangular, Fins 25.000" (635.00mm) 0.827" (21.00mm) - 0.295" (7.50mm) - - 9.62°C/W Aluminum Alloy Unfinished
    SK 187 75 ME

    SK 187 75 ME

    Extruded Heatsink

    Fischer Elektronik

    1,000
    RFQ
    SK 187 75 ME

    Datasheet

    SK 187 Bulk Active Board Level, Extrusion - - Rectangular 2.953" (75.00mm) 1.575" (40.00mm) - 2.323" (59.00mm) 32.26W @ 80°C 0.7°C/W 2.48°C/W Aluminum Natural Anodized
    SK 187 75 SA

    SK 187 75 SA

    Extruded Heatsink

    Fischer Elektronik

    1,000
    RFQ
    SK 187 75 SA

    Datasheet

    SK 187 Bulk Active Board Level, Extrusion - - Rectangular 2.953" (75.00mm) 1.575" (40.00mm) - 2.323" (59.00mm) 35.56W @ 80°C 0.7°C/W 2.25°C/W Aluminum Black Anodized
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