Easycargo 10 Packs TO-220 Heatsink + Insulator Mounting Screws Kits for LM317 LM317t L7805 L7812 L78XX Voltage Regulator, IRFZ44N 3205 520N 630 1404

The Easycargo 10 Packs TO-220 Heatsink Insulator Mounting Kits provide a convenient solution for cooling LM317 and other TO-220 form factor voltage regulators and MOSFET transistors. The kit includes ten heat sinks, thermal pads, plastic isolators, screws, washers, and lock washers. Although the manufacturer's dimensions are described as nearly useless, customers have found that the heat sinks are the perfect size for TO-220 regulators. Users have also noted that the plastic screw insulators may be slightly too long but can be easily adjusted by shaving off the excess with a razor. The thermal resistance of the heat sinks is not provided in a datasheet, but one customer measured a thermal resistance of 17.6-18.0 degC per Watt, which is Consistent with their estimated value based on data from Ohmite. This information may be useful for those who need to do thermal analysis in their circuit design. Overall, customers have had a positive experience with these heat sinks. They are described as being great for lightly to moderately loaded regulators and work well for projects that don't require a lot of heat dissipation. The fact that all the necessary pieces are included in the kit is also appreciated by customers who needed them quickly for their projects.