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Product Overview
Digi-Key Part Number HS278-ND
Quantity Available 6,482
Can ship immediately

Manufacturer Part Number


Description Heat Sink TO-220 Aluminum 4W @ 80°C Board Level
Lead Free Status / RoHS Status Lead free / RoHS Compliant
Manufacturer Standard Lead Time 7 Weeks
Documents & Media
Datasheets Standard Heatsinks Catalog
Product Training Modules How to Select a Heat Sink
Online Catalog Heat Sinks
Product Attributes Select All

Fans, Thermal Management


Thermal - Heat Sinks


Aavid Thermalloy

Series -
Part Status Active
Type Board Level
Package Cooled TO-220
Attachment Method Bolt On
Shape Rectangular, Fins
Length 1.180" (29.97mm)
Width 1.000" (25.40mm)
Diameter -
Height Off Base (Height of Fin) 0.500" (12.70mm)
Power Dissipation @ Temperature Rise 4W @ 80°C
Thermal Resistance @ Forced Air Flow 6°C/W @ 600 LFM
Thermal Resistance @ Natural 16.7°C/W
Material Aluminum
Material Finish Black Anodized
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Additional Resources
Standard Package ? 500
Other Names 001725

03:09:21 8/27/2016

Price & Procurement

All prices are in US dollars.
Price Break Unit Price Extended Price
1 0.67000 0.67
10 0.63800 6.38
100 0.58190 58.19
500 0.51018 255.09
1,000 0.46235 462.35
5,000 0.44640 2,232.02

Submit a request for quotation on quantities greater than those displayed.

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