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   "name": "Heatsink TO-220 4 Fins Aluminium",
   "description": "Suits TO-220 Devices Small Compact Size Thread hole size: M3 Thread hole Pitch: 0.5mm Excellent Heat Dissipation Dimensions: Length - 17mm Width - 17mm Height - 26mm More Information Same Spec Items - SKU A-5093 Manufacturer 100 Electronics MPN Heatsink TO-220 4 Fins Aluminium Can be used with - Customer Ratings 4.9/5 Based on 10 reviews 5 Stars 27 4 Stars 3 3 Stars 0 2 Stars 0 1 Star 0 Write a review Price Quality Value Feb 3, 2014 Quality product The item has no manufacturer or part number marked on it but it is a quality product. It is basically an aluminum extrusion with saw cut ends and tapped hole. The saw cuts are 'raw' but not unreasonably sharp and do not have a burr. The rear heat transfer surface is reasonable flat but can be enhanced by lapping. To do this rub it across a piece of fine sandpaper on a flat surface until the entire surface shines. The hole is tapped for an M3x.5 screw. I used the a mounting screw from an old computer CDROM and it worked great. There was a slight burr on the edge of the hole down between the fins. I used a razor knife to remove it to avoid the off chance of it flaking off later and causing a short. The heatsink is 26mm long x 17mm wide x17mm tall (fin side). The base is 2.5MM thick, the fins are 1.5MM thick. The hole is on center line between the fins and 7.5MM from the top. The unit weighs 10g (0.4oz) (without a screw). With the screw in it is just the right height to allow the legs to push through into your PCB or breadboard. If you use it with your breadboard be sure to leave an air gap underneath to avoid transferring the heat to the plastic. I am using it to cool a 7805 Vreg and it works great. Overall I would buy it again and would recommend it to a friend. Penname Price Quality Value Jun 18, 2013 good value adorable little heatsinks at a pretty fair price Kris Price Quality Value Jun 15, 2013 Can use #4-40 machine screws Work great with TO220 packages Ted W Price Quality Value May 16, 2013 Recommended Product -> Specs These are great quality and the price is right. Specs: Weight: 10.35 g Length x Width x Fin Height: 26 x 17 x 17 mm Mounting Hole Location: 7.5 mm from end Mounting Hole: M3 Thread, standard pitch Recommended Mounting Screw: M3x5 Thermal Resistance Natural Convection: 17.5°C/W Thermal Resistance Forced Air Flow: 4°C/W Nicholas Price Quality Value Dec 8, 2012 Great, but how many C/W? Have used these very nicely on LM350s, but would love to know their thermal resistance rating. Robert Price Quality Value Sep 15, 2012 Awesome Great price for even better product David Items 1 to 6 of 10 total Previous You're currently reading page 1 Page 2 Next Show: 4 6 8 16",
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