Easycargo 12 Packs TO-220 Heatsink + Insulator/Mounting Kits for LM317 LM317t L7805 L7812 L78XX Voltage Regulator, IRF Z44N 3205 520N 630 1404 MOSFET Transistor (20mm x 15mm x 10mm) (Silver 12 Pack)

These heat sinks seem to do their job. I have missed them on a couple of devices that I have built, whenever I have a voltage regulator chip, it definitely calls for these. If you are planning on using one in your project just make sure you put some electrical tape on the proto board under it to electrically isolate it from the other lines. It's conductive and can short out your circuit if you're not isolating it electrically. Particularly an issue when using proto boards.

a advertised

We needed to build a school project from scratch and this heatsink fits a 2 amp 5 volt regulator and worked out great removing the heat. The project was multi port USB charger that worked from AC/DC or solar cell.

Tiny but better than nothing. The plastic bushings are way too long and must be filed down to allow good contact between to-220 tab and insulator/heatsink. Heat dissipation is about 1/2 to 1 watt. Not much but better than nothing. Very compact heatsinks, well machined and anodized.

Good quality, works well in a DC power supply and Audio power amplifier using TO-220 package devices. I used the KiCAD Heatsink_Fischer SK104-TSC-STIC foot print, but I had to modify the court yard to eliminate court yard conflict errors between the T0-220 package part and the heat sink (copied the foot print into personal component library, and modified the courtyard).

Nice heatsinks. Thicker than modt aluminum heatsinks

Smaller than expected

Very good